Condition Analysis
AI-powered assessment using site data and 14-day weather history
Five consecutive dry days with warm temperatures (up to 29°C) and moderate westerly winds have provided good drying conditions since the last significant rain on August 9th (6.5mm). Despite Ravens Crag's slower drying characteristics, these conditions should be sufficient for the rock to have dried through.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside and is partially sheltered by the ridge above Bowden Doors, meaning it dries noticeably more slowly than neighbouring crags and should be assessed more conservatively.
- The predominantly slab-based, low-angle problems with rounded holds are especially sensitive to residual moisture — even slight dampness dramatically reduces friction on these features.
- The west-facing aspect receives afternoon and evening sun, which combined with the prevailing westerly winds over recent days has aided drying, though morning conditions may feel damper.
- The crag is part of the Colour Heugh SSSI, so any damage from climbing on insufficiently dry rock has conservation as well as climbing implications.
Warnings
1
- Rain forecast from August 17th onwards (3–5mm per day for three days) will reset drying — plan sessions for the 15th or 16th if possible.
Reasoning
The last significant rainfall was 6.5mm on August 9th, followed by five full dry days with temperatures reaching 29°C and moderate winds — this comfortably exceeds the 48-hour minimum guideline for moderate rain on porous sandstone.
Persistent westerly and southerly winds (17–25 km/h) hitting the W-facing aspect directly, combined with warm temperatures averaging over 20°C in recent days, have provided strong evaporative drying despite the sheltered lower position on the hillside.
With five days of drying after only 6.5mm of rain, internal moisture levels should be well below the threshold for significant strength reduction, and freeze-thaw is not a concern in August.
Mid-summer conditions with long daylight hours, warm temperatures, and reasonable humidity levels are favourable for sandstone drying and climbing.
Contributing Factors
6
Five consecutive dry days since the 6.5mm rain on August 9th comfortably exceeds the two-day minimum guideline for this rainfall amount.
Temperatures reached 21–29°C over the past three days, significantly accelerating evaporation from the rock.
Westerly and southerly winds of 17–25 km/h blowing directly onto the west-facing crag have enhanced surface and subsurface drying.
The crag's position below the ridge receives less direct airflow and sun exposure than Bowden Doors above, slowing drying somewhat.
Average humidity around 70–74% is moderate for Northumberland — not ideal but not impeding drying significantly in combination with wind and warmth.
44.6mm over the past 28 days indicates a moderately wet period overall, though the most recent dry spell has been sustained enough to counter this.
Recommendations
3
- Conditions look good today and tomorrow — take advantage of the dry window before rain returns on August 17th.
- Check the base of the crag on arrival: if the ground is still damp rather than sandy-dry, treat the rock as suspect and consider walking up to Bowden Doors instead.
- Avoid lower, more sheltered sections if they feel cool or clammy to the touch — start with problems in the most exposed, wind-facing areas first.
Previous Analyses
Marginal — Assess Conditions
72%
2 days ago
Four consecutive dry days with warm temperatures (up to 28°C today) and moderate winds have followed the last significant rain of 6.5mm on August 9th, which should be sufficient drying time for a summer period — but Ravens Crag's sheltered position below the ridge and its slow-drying reputation introduce enough uncertainty that a visual check on arrival is strongly advised. Earlier scattered light showers (0.2mm on Aug 5th, 2.3mm on Aug 6th) and the heavier 6.5mm on Aug 9th mean the rock has had a somewhat interrupted drying pattern over recent weeks.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside than Bowden Doors and is partially sheltered by the ridge above, meaning it receives less direct wind and dries noticeably more slowly than its neighbour — always check here independently even if Bowden Doors appears dry.
- The predominantly slab-based, low-angle problems with rounded holds are especially vulnerable to moisture-related friction loss; even slight residual dampness on these features makes them dangerously slippery and accelerates erosion.
- The west-facing aspect means the crag only receives afternoon and evening sun, so morning visits may find lingering dampness in sheltered nooks that clears later in the day.
- The base of the crag and lower sections will be the last to dry — check the ground and rock at foot level as a reliable moisture indicator before committing to climb.
Warnings
2
- Do not climb on any holds that feel cool, greasy, or show colour differences suggesting dampness — Fell Sandstone loses significant strength at even 1% saturation.
- The slab-based, rounded-hold problems at Ravens Crag are particularly unforgiving if conditions are marginal; friction loss on damp rounded holds can cause sudden falls.
Reasoning
The last meaningful rain was 6.5mm on August 9th (4 days ago), preceded by a scattered pattern of light showers through late July and early August and a heavy 25.9mm event on July 26th; four dry days in summer warmth should have dried the surface, but internal moisture may linger in this sheltered location.
Moderate SW/W winds (15–25 km/h) and warm temperatures (17–28°C) over the last four days provide reasonable drying conditions, though the west aspect limits sun exposure to afternoons only and the sheltered position below the ridge reduces wind effectiveness compared to Bowden Doors above.
With 4 days of dry weather after 6.5mm of rain in summer conditions, structural risk from internal moisture is low but not negligible given the crag's slow-drying character and the cumulative 44.6mm over the past 28 days.
Mid-August provides the best natural drying conditions of the year with long days, warm temperatures, and no freeze-thaw concern; today's 28°C peak is particularly favourable for driving off residual moisture.
Contributing Factors
7
Four consecutive dry days since the 6.5mm rainfall on August 9th meets the minimum '2-day rule' for porous rock, though this crag's slow-drying nature demands extra caution.
Temperatures reaching 21–28°C over the last three days significantly accelerate evaporation from porous sandstone.
Ravens Crag sits below the ridge that hosts Bowden Doors, reducing wind exposure and direct sun, and is known locally to dry noticeably more slowly.
The west-facing aspect receives only afternoon and evening sun, providing moderate but not optimal solar drying compared to a south-facing crag.
Winds of 15–25 km/h from westerly and southerly directions over recent days help move moist air from the rock surface, aiding drying despite partial shelter.
A total of 44.6mm over the past 28 days, including a heavy 25.9mm event on July 26th, means the rock has been repeatedly wetted and may retain deeper internal moisture.
Average humidity of 73% over the last week is moderate for Northumberland in summer — not ideal for rapid drying but not preventing it either.
Recommendations
3
- Visually inspect the rock and check the ground at the base of the crag — if the soil is still damp or dark, the rock likely retains internal moisture and should not be climbed.
- Favour problems in the afternoon when the west-facing rock has had maximum sun exposure; avoid early morning sessions when overnight humidity may have re-dampened surfaces.
- If Ravens Crag shows any signs of dampness, walk uphill to Bowden Doors which dries faster and may be in better condition.
Marginal — Assess Conditions
60%
3 days ago
The last significant rain was 6.5mm on August 9th (three days ago), followed by two dry days and today's negligible 0.1mm trace; however, Ravens Crag's sheltered position and slower drying mean internal moisture may linger despite reasonable summer temperatures. Conditions are likely approaching dry but a careful on-site assessment is essential, particularly on lower and shaded sections.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside below Bowden Doors and is partially sheltered by the ridge above, meaning it dries noticeably more slowly than the better-known crag higher up.
- The predominantly slab and low-angle nature of the problems means water sits on the rock surface longer than it would on steeper terrain, extending drying times.
- The west-facing aspect receives afternoon and evening sun only, which is helpful but means the crag misses the morning drying window entirely.
- The crag has seen a pattern of intermittent rain through late July and early August (44.7mm in 28 days), meaning background moisture levels in the porous sandstone are elevated compared to a prolonged dry spell.
Warnings
2
- Do not assume the rock is dry internally just because the surface appears dry — Fell Sandstone loses significant strength while still appearing surface-dry.
- The slab and rounded-hold character of Ravens Crag means hold breakage from damp rock is a real possibility; any doubt should lead to walking away.
Reasoning
The 6.5mm rain on August 9th was moderate, and while three days of mostly dry weather with decent temperatures (17–26°C) have followed, the sheltered lower position and elevated background moisture from a wet recent period mean internal dampness could persist.
Three days of drying in summer temperatures with moderate SW/W/S winds (~15–25 km/h) and humidity around 65–79% would normally be adequate for light-to-moderate rain, but Ravens Crag's sheltered aspect and slower drying character add uncertainty.
Fell Sandstone's rounded holds on slab problems are particularly vulnerable to grain loosening if any residual moisture remains, and the slab-heavy nature of the venue means body weight is transferred directly through foot holds under compression.
Mid-summer conditions are broadly favourable for drying, with warm temperatures and long daylight hours, though the intermittent rain pattern through July–August has kept cumulative moisture higher than ideal.
Contributing Factors
7
The 6.5mm on August 9th has been followed by three largely dry days (only trace amounts), meeting the minimum two-day rule of thumb for porous rock.
Ravens Crag is explicitly noted as drying more slowly than Bowden Doors due to its lower, ridge-sheltered position, adding perhaps a day to standard drying estimates.
Temperatures of 17–26°C over the drying period with today reaching 26°C provide good evaporative potential for summer sandstone drying.
Winds of 15–25 km/h from SW/W/S over the past three days help move moist air away from the west-facing rock surface.
Nearly 45mm of rain over the past 28 days with multiple wet episodes means the sandstone's pore network likely carries more residual moisture than after a prolonged dry spell.
Low-angle slab climbing loads rounded holds under compression, making any residual internal moisture a greater risk for hold breakage and grain loss.
The 0.1mm forecast at 18:00 is essentially a trace and will not meaningfully re-wet the rock surface.
Recommendations
3
- Visit in the afternoon when the west-facing crag has received maximum sun exposure, and carefully test the rock surface and base-of-crag ground moisture before committing to climb.
- Prioritise upper and more exposed sections of the crag first, as lower and more sheltered areas will retain moisture longest.
- If the ground at the crag base is still damp or dark-coloured, do not climb — walk uphill to Bowden Doors instead, which dries significantly faster.
Do Not Climb
55%
5 days ago
Ravens Crag received 6.5mm of rain yesterday (Aug 9) and has had only one full dry day since, which is insufficient drying time for this sheltered, slow-drying venue. With high average humidity (79%) and the crag's known tendency to hold moisture longer than nearby Bowden Doors, the rock is very likely still damp internally despite any surface drying.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside and is partially sheltered by the ridge above Bowden Doors, meaning it receives less direct wind and sun, significantly slowing drying compared to the main crag.
- The predominantly slab and low-angle nature of the problems means water sits on and soaks into the rock face rather than running off — slabs retain moisture longer than steep or overhanging rock.
- The rounded holds characteristic of this venue are particularly vulnerable to grain loosening when wet, and any breakage on these features would be irreversible.
- The westerly aspect means the crag only receives afternoon and evening sun, and with today's heavy cloud cover (75–100% from mid-morning), effective solar drying will be minimal.
Warnings
2
- Do not climb on Fell Sandstone that may be damp internally — the slab-based, rounded holds at Ravens Crag are especially vulnerable to irreversible grain loosening and breakage.
- The rock surface may appear dry while the interior remains saturated; surface appearance alone is not a reliable indicator of safety at this venue.
Reasoning
With 6.5mm of rain on Aug 9 and a preceding pattern of intermittent rain events (2.3mm on Aug 6, 5.5mm on Aug 4), the cumulative moisture loading over the past week means the rock is very likely still saturated internally despite one dry day.
Only one dry day has elapsed since the last significant rain, with humidity averaging 79% and today's cloud cover limiting solar input — for a sheltered, west-facing crag that dries noticeably slower than Bowden Doors, this is well short of the 48–72 hour minimum needed after 6.5mm of rain.
The slab-based problems with rounded holds are at elevated risk of grain loosening and hold breakage given the likely internal moisture, and any damage to these features would be permanent.
Summer temperatures (~16°C) are adequate for drying but the high humidity and cloud cover are limiting evaporation rates; no freeze-thaw risk at this time of year.
Contributing Factors
6
6.5mm fell on Aug 9 with additional rain events on Aug 4 (5.5mm), Aug 6 (2.3mm), and smaller amounts on Aug 3 and Aug 5, creating cumulative moisture loading.
Only one full dry day since the last 6.5mm rain event, well short of the 48+ hours needed for porous Fell Sandstone even at an exposed crag, let alone this sheltered one.
Average humidity over the last 7 days is 79%, and today's humidity ranges from 64–89%, significantly limiting evaporation from the rock surface.
Ravens Crag is lower on the hillside and sheltered by the ridge above, meaning it dries noticeably more slowly than the already-cautious baseline for Fell Sandstone.
A westerly wind of ~17 km/h today will help surface drying on this west-facing crag, though it is partially sheltered from full exposure.
Temperatures around 16°C are reasonable for drying, though not high enough to compensate for the humidity and shelter issues.
Recommendations
3
- Wait at least until Aug 12, when two full dry days with lower humidity (62%) and warmer temperatures (24°C) will have had a chance to dry the rock more thoroughly.
- If visiting the area, consider checking Bowden Doors first — as the higher, more exposed crag it will dry significantly faster than Ravens Crag.
- Before climbing, check the ground at the base of the crag: if it is moist rather than sandy-dry, the rock is certainly still holding internal moisture.
Do Not Climb
72%
5 days ago
Today saw 3.1mm of rain with high humidity (84%), and the rock will not have had any meaningful drying time. Given Ravens Crag's sheltered position and slow-drying character, at least 48 hours of dry weather is needed before conditions can be considered acceptable — tomorrow and the day after look dry but marginal.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside and is partially sheltered by the Bowden Doors ridge above, meaning it dries noticeably more slowly than its better-known neighbour despite identical rock type.
- The predominantly low-angle slab problems with rounded holds are especially sensitive to residual moisture — friction-dependent climbing on damp Fell Sandstone risks both hold damage and slips.
- West-facing aspect means the crag only receives afternoon and evening sun, and prevailing westerly winds today and tomorrow will help surface drying but cannot address internal moisture from today's rain.
- The recent weather pattern has been unsettled with multiple small rain events (5.5mm on Aug 4, 2.3mm on Aug 6, 3.1mm today), meaning the rock has had little opportunity to dry out fully between wettings.
Warnings
2
- Fell Sandstone loses up to 50% of its compressive strength when wet — climbing on damp rock risks permanent hold breakage on these irreplaceable problems.
- The rock surface may appear dry while remaining saturated internally; do not rely on visual inspection alone, especially at this slower-drying venue.
Reasoning
Today's 3.1mm of rain on already-moist rock (previous events on Aug 3–6 totalling 8.2mm with only two dry days since) means the sandstone is almost certainly saturated internally despite any surface drying.
With westerly winds around 15–20 km/h and afternoon sun on the west face, surface drying will begin tomorrow, but the sheltered lower position and 76% forecast humidity mean 48+ hours are needed for meaningful internal drying.
The repeated wetting cycle over the past week without prolonged drying increases the risk of grain loosening and hold breakage, particularly on the rounded slab holds that characterise this venue.
Summer temperatures (16–18°C) aid drying and there is no freeze-thaw concern, but the humid, unsettled pattern with humidity averaging 80% over the last week significantly slows evaporation.
Contributing Factors
7
Today's moderate rainfall has re-wetted the rock surface and replenished internal moisture, resetting the drying clock.
Multiple rain events over the past week (Aug 3, 4, 5, 6, and 9) totalling ~11mm have kept the rock in a persistently moist state with insufficient drying windows between events.
Ravens Crag's position below the Bowden Doors ridge reduces airflow and sun exposure, causing it to dry noticeably more slowly than the upper crag.
Humidity has averaged 80% over the past week and is 84% today, significantly slowing evaporative drying from the porous sandstone.
Prevailing westerly winds at 15–25 km/h blow directly onto the west-facing rock, which will help surface drying over the coming days.
Temperatures in the mid-to-high teens provide reasonable evaporative potential and eliminate any freeze-thaw concern.
No rain is forecast for Aug 10–11, providing a 48-hour drying window before the next light rain on Aug 12.
Recommendations
3
- Do not climb today or tomorrow — the rock needs at least 48 hours of dry weather after today's rain, and longer given the cumulative moisture from recent days.
- If visiting on Aug 11, perform careful touch-tests on the rock surface and check whether the ground at the base of the crag is still damp — if so, the rock is still wet internally.
- Consider climbing at Bowden Doors higher up the hillside instead, as it dries faster due to greater exposure; but still allow adequate drying time after today's rain.
Do Not Climb
45%
6 days ago
Recent rain on Aug 4 (5.5mm), Aug 6 (2.3mm), and trace precipitation today (0.1mm) mean Ravens Crag has not had adequate continuous drying time. Given the crag's sheltered position and slow-drying reputation, internal moisture is likely still present despite possible surface drying.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside and is partially sheltered by the ridge above Bowden Doors, meaning it dries noticeably more slowly than its neighbour — treat drying estimates conservatively.
- The predominantly slab-based, low-angle climbing with rounded holds makes friction critical, and even slight residual dampness dramatically increases the risk of slipping and polishing holds.
- W-facing aspect receives only afternoon/evening sun, which limits the daily drying window — morning hours offer no direct solar drying.
- The crag is part of the Colour Heugh SSSI, so any rock damage from wet climbing has conservation as well as ethical implications.
Warnings
2
- Do not climb on Fell Sandstone that may be internally damp — significant strength loss begins at just 1% water saturation, and the surface can appear dry while the interior remains wet.
- Slab climbing on rounded holds with any residual moisture is a serious slip hazard and accelerates irreversible polish and erosion on this SSSI-designated rock.
Reasoning
The most recent significant rain was 2.3mm on Aug 6, with only one fully dry day (Aug 7) since then and a trace of precipitation today — insufficient continuous drying for porous Fell Sandstone at a sheltered site.
One full dry day with decent SW wind (25.6 km/h on Aug 7) and moderate temperatures (~18°C) provides some surface drying, but the sheltered, W-facing aspect and 78% average humidity over the past week limit evaporation from depth.
With 8.3mm of rain in the past 7 days across multiple events, the sandstone has had repeated wetting cycles without extended drying — internal moisture likely remains above the threshold where significant strength loss occurs.
Summer temperatures (mid-to-high teens) and moderate winds are helpful for drying, but persistently elevated humidity (78% average) partly offsets these benefits.
Contributing Factors
6
2.3mm of rain fell just two days ago, and the crag has had only one fully dry day since.
Multiple rain events over the past week (Aug 4: 5.5mm, Aug 5: 0.2mm, Aug 6: 2.3mm) have kept the rock periodically wetted without extended drying.
Ravens Crag is explicitly noted as drying more slowly than Bowden Doors due to its lower, sheltered position behind the ridge.
Average humidity of 78% over the past week significantly slows evaporation from porous sandstone.
Sustained winds of 20–42 km/h and summer temperatures around 18°C provide some useful drying assistance.
0.1mm today resets the consecutive dry day count and may refresh surface moisture films.
Recommendations
3
- Wait at least 48 hours of fully dry weather from the last rain event before visiting — realistically Aug 12 or later given the forecast shows further light rain tomorrow.
- If visiting the area, consider checking the faster-drying Bowden Doors above the ridge first as a proxy — if that is still damp, Ravens Crag will certainly be too wet.
- Check the base of the crag on arrival: if the ground or sandy soil below the rock face is not completely dry, the rock interior will still hold moisture.
Do Not Climb
55%
7 days ago
Ravens Crag received 2.3mm of rain yesterday (Aug 6) and has had only one full dry day since, which is insufficient drying time for this sheltered, slow-drying venue. The preceding week also brought multiple small rain events (5.5mm on Aug 4, light traces on Aug 3 and 5), meaning internal moisture levels are likely still elevated despite today's dry and breezy conditions.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside and is partially sheltered by the ridge above (Bowden Doors), meaning it receives less direct wind and dries noticeably more slowly than the main crag despite being part of the same system.
- The predominantly low-angle slab problems with rounded holds are especially dangerous when damp — friction-dependent moves on rounded Fell Sandstone holds become treacherous, and the low-angle rock retains surface moisture longer than steep terrain.
- The west aspect means the crag only gets afternoon and evening sun, limiting the daily drying window compared to a south-facing venue.
- Recent rainfall has been frequent and scattered (five separate rain events in the last 10 days totalling ~9mm), preventing the rock from ever fully drying out internally between episodes.
Warnings
2
- Fell Sandstone loses up to 50% of its compressive strength when wet — climbing on apparently dry but internally damp rock risks permanent hold breakage on Ravens Crag's rounded features.
- The slab-heavy nature of Ravens Crag makes damp conditions especially dangerous for climber safety due to reliance on friction on rounded holds.
Reasoning
With 2.3mm on Aug 6, 0.2mm on Aug 5, 5.5mm on Aug 4, and smaller amounts on Aug 3 and Aug 1, the rock has had no sustained dry spell to fully purge internal moisture — only one dry day since the most recent meaningful rain.
Today's SW wind at ~24 km/h and lower humidity (71%) are helpful, but the partial shelter from the ridge above reduces effective wind exposure, and a single dry day is well short of the 48+ hours needed after cumulative light-to-moderate rain on porous Fell Sandstone.
The repeated wetting cycles over the past 10 days mean the sandstone's compressive strength is likely still significantly reduced internally; climbing on the rounded, friction-dependent holds typical of Ravens Crag risks hold breakage and permanent damage.
Summer temperatures (~18°C) and longer daylight hours aid drying, but the persistently elevated humidity (averaging 78% over the last week) partially offsets this benefit.
Contributing Factors
7
2.3mm fell on Aug 6 with only one full dry day since, well below the minimum 48-hour drying guideline for porous sandstone.
Five separate rain events in the last 10 days (Aug 1, 3, 4, 5, 6) have prevented the rock from achieving a fully dry internal state.
Ravens Crag's position below the ridge and partial shelter from wind means it dries noticeably slower than nearby Bowden Doors.
SW wind at 23.8 km/h is helping surface evaporation, though the sheltered position reduces its effectiveness at crag level.
Temperatures around 18°C provide reasonable evaporative potential, though not exceptional for mid-summer.
Average humidity of 78% over the past week slows evaporation and prolongs internal drying times.
Light rain (0.7mm) is forecast for Aug 8 followed by a more significant 4.9mm on Aug 9, which will reset drying progress.
Recommendations
3
- Do not climb today — wait for a sustained dry spell of at least 48 hours after the most recent rain, which the forecast does not provide until Aug 11 at the earliest.
- Check conditions at the higher Bowden Doors first, as it dries faster; if Bowden Doors still feels damp, Ravens Crag will certainly be too wet.
- After the forecast rain on Aug 9, monitor conditions from Aug 11 onwards — two dry days with good wind could bring the crag back into condition by Aug 12.
Do Not Climb
60%
9 days ago
Rain fell in the early hours of today (1.6mm) on top of 5.5mm on August 4th and smaller amounts on the 3rd and 5th, meaning the rock has had no meaningful drying window. Given Ravens Crag's sheltered position and slower drying characteristics, internal moisture levels are almost certainly still elevated despite any surface drying later today.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside than Bowden Doors and is partially sheltered by the ridge above, which significantly reduces airflow and sun exposure, causing it to dry noticeably more slowly than its neighbour.
- The predominantly slab and low-angle nature of the problems means water pools and soaks in rather than running off, and rounded holds on porous Fell Sandstone are especially vulnerable to grain loosening when damp.
- West-facing aspect means the crag only receives afternoon and evening sun, which limits the effective drying hours per day — and today's 100% cloud cover eliminates even that advantage.
- The recent wet spell (25.9mm on July 26, 2.3mm on July 28, then repeated light rain through early August) has kept background moisture levels elevated for over a week with no sustained dry period.
Warnings
2
- Climbing on damp Fell Sandstone causes permanent, irreversible damage to holds — the slab-based, rounded-hold character of Ravens Crag makes it especially vulnerable.
- Surface-dry appearance is unreliable on porous sandstone; internal moisture can persist long after the surface looks climbable.
Reasoning
With 1.6mm of rain today (mostly in the early hours), 5.5mm on August 4th, and trace amounts on the 3rd and 5th, the rock has been repeatedly re-wetted and has had zero consecutive fully dry days — internal moisture is almost certainly well above safe thresholds.
Although humidity drops to the low 50s this afternoon and there is moderate wind, the crag's sheltered position below the ridge and its west aspect under full cloud cover today severely limit effective drying; one afternoon is wholly insufficient to dry porous Fell Sandstone after repeated recent wetting.
Fell Sandstone loses significant compressive strength at very low saturation levels, and the repeated wetting cycle over the past 10 days without adequate drying means holds — particularly the rounded, friction-dependent features characteristic of Ravens Crag — are at elevated risk of breakage.
Summer temperatures are helpful for evaporation but the recent pattern of frequent light rain with average humidity around 77% over the past week has prevented the sustained dry spell needed for full internal drying of this porous rock.
Contributing Factors
6
1.6mm fell in the early hours today, following 5.5mm on Aug 4th and trace rain on Aug 3rd and 5th, resetting the drying clock repeatedly.
There have been no fully dry days in succession since the heavy 25.9mm event on July 26th, with every 1–2 dry days interrupted by further rain.
Ravens Crag's location below the ridge and partial wind shelter means it dries markedly slower than nearby Bowden Doors, adding significant time to any drying estimate.
Humidity drops to ~51% this afternoon with moderate westerly wind, providing some surface evaporation — but insufficient to dry internally after repeated wetting.
No rain is forecast for the next 5+ days with improving temperatures and lower humidity, which will progressively allow internal moisture to dissipate.
Average humidity over the past 7 days has been 77%, slowing evaporation and keeping the rock's internal moisture elevated.
Recommendations
3
- Do not climb at Ravens Crag today — the rock received rain this morning and has had no adequate drying period after repeated recent wetting.
- Wait for at least 48 hours of dry weather from the end of today's rain before visiting; August 8th or 9th are the earliest realistic options, and even then assess conditions on arrival.
- Check the ground at the base of the crag for dampness before climbing — if the soil or sand is moist, the rock above is certainly still wet internally.
Do Not Climb
93%
11 days ago
Ravens Crag is currently wet and unsafe to climb — 6.5mm of rain fell today (with the heaviest bursts between 03:00 and 13:00), on top of a series of light showers over the past week and a significant 25.9mm event on July 26th. The rock will need at least 48–72 hours of dry weather to begin drying adequately, and the forecast shows further rain tomorrow and the day after.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside than Bowden Doors and is partially sheltered by the ridge above, meaning it receives less direct wind and sun and dries noticeably more slowly than its neighbour.
- The predominantly slab-based and low-angle problems are especially vulnerable to moisture — water pools and seeps on slabs far longer than on steep or overhanging terrain, and rounded holds lose friction dramatically when damp.
- The westerly aspect means the crag only receives afternoon and evening sun, limiting the solar drying window particularly on overcast days like today.
- The site is part of the Colour Heugh SSSI, adding conservation sensitivity on top of the climbing ethics requirement to avoid wet rock.
Warnings
2
- Climbing on wet Fell Sandstone causes permanent, irreversible damage to holds — the slab-based rounded holds at Ravens Crag are especially fragile when damp.
- The rock surface may appear dry before the interior has adequately dried — do not be fooled by surface appearance; check the ground at the base of the crag as a moisture indicator.
Reasoning
The rock is currently saturated from 6.5mm of rain today, compounding residual moisture from light showers on August 1st and 3rd and the heavy 25.9mm event on July 26th — internal moisture levels are very likely well above the danger threshold.
Drying has been poor over the past week due to persistent humidity averaging 76%, predominantly NE/E winds that don't directly assist a west-facing crag, and repeated light precipitation events preventing any sustained dry period since July 26th.
With recent heavy and repeated wetting, Fell Sandstone strength is significantly reduced — the slab-based rounded holds are at high risk of breakage, and climbing now would cause permanent damage to this porous rock.
Summer temperatures (~15–21°C) would normally aid drying, but the persistently high humidity and frequent showers characteristic of this unsettled spell are preventing meaningful recovery.
Contributing Factors
7
6.5mm fell today with the bulk arriving in intense bursts around 03:00–05:00 and 12:00–13:00, thoroughly wetting the rock.
Light showers on July 31st (0.9mm), August 1st (0.4mm), and August 3rd (0.2mm) prevented proper drying after the major 25.9mm event on July 26th.
Ravens Crag's position below the ridge and partial wind shelter mean it dries significantly slower than nearby Bowden Doors.
Humidity has averaged 76% over the past week and is 88% today, severely limiting evaporative drying from the rock surface.
Further rain is forecast for August 5th (3.2mm) and August 6th (1.2mm), resetting any drying progress.
Temperatures around 15–21°C provide some drying potential but are insufficient to overcome the high humidity and frequent precipitation.
Westerly winds of 19–25 km/h are helpful for this W-facing crag and could aid drying once rain stops, but this benefit is negated by ongoing precipitation.
Recommendations
3
- Do not climb at Ravens Crag today or in the coming days — the rock is wet and further rain is forecast through August 6th.
- Monitor conditions from August 7th onward; if the forecast dry day holds and humidity drops, the earliest realistic window for assessment would be August 8th–9th, but even that depends on no further rain.
- Consider non-porous alternatives in the region (e.g. whinstone crags like Kyloe or the Great Whin Sill venues) if you need a climbing fix during this unsettled spell.
Do Not Climb
90%
12 days ago
Ravens Crag is currently wet and unsuitable for climbing. Light but repeated precipitation today (1.7mm across multiple hours) on top of recent rain events means the porous Fell Sandstone will be saturated, and the sheltered, slow-drying nature of this venue prevents any meaningful drying. The five-day forecast shows further rain on each of the next four days, offering no adequate drying window.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Ravens Crag sits lower on the hillside than Bowden Doors and is partially sheltered by the ridge above, meaning it dries noticeably more slowly than its neighbour — add at least 24 hours to any standard drying estimate.
- The predominantly slab-based and low-angle problems with rounded holds are especially dangerous when damp, as friction is critical and there is no margin for slipping on weakened, polished surfaces.
- Westerly aspect means the crag only receives afternoon and evening sun; combined with the sheltered position, solar drying is limited compared to south-facing venues.
- The recent heavy rain event on 26 July (25.9mm) followed by further showers on 28 July, 31 July, 1 August, and today means the rock has had no sustained dry spell to fully recover — internal moisture levels are likely still elevated.
Warnings
2
- Climbing on wet Fell Sandstone causes permanent, irreversible damage to holds — the rounded slab holds at Ravens Crag are especially vulnerable to grain loosening and breakage.
- The rock surface may appear dry while the interior remains saturated — do not rely on visual inspection alone at this venue given the cumulative rainfall.
Reasoning
Multiple rain events over the past week (2.3mm on 28 July, 0.9mm on 31 July, 0.4mm on 1 August, and 1.7mm today) on top of a major 25.9mm deluge on 26 July mean the rock has had no opportunity to fully dry internally, and today's intermittent showers have re-wetted the surface.
Although there were brief dry spells between showers, the sheltered and west-facing aspect of Ravens Crag combined with humidity consistently above 75% and moderate winds predominantly from the east and southeast (not hitting the west face effectively) have severely limited drying.
The cumulative moisture loading from repeated wetting events over the past 8 days poses a significant risk of hold breakage on the rounded, friction-dependent holds that characterise this venue — even 1% saturation begins weakening Fell Sandstone.
Mid-summer temperatures (~15–17°C) are helpful but not exceptional, and the current unsettled pattern with high humidity and overcast skies is limiting evaporative drying potential.
Contributing Factors
7
Today has seen approximately 1.7mm of intermittent light rain through the morning and early afternoon, directly wetting the rock surface.
Since the major 25.9mm rainfall on 26 July, showers on the 28th, 31st, 1st, and today have prevented any continuous drying period long enough for this slow-drying venue.
Humidity has averaged 75% over the past week with today reaching 87%, severely limiting evaporative drying from the rock surface.
Ravens Crag's position below the ridge means it receives less direct wind and sun than Bowden Doors, adding significant time to any drying estimate.
Recent prevailing winds from the east and southeast do not directly hit the west-facing rock face, reducing the wind-assisted drying effect.
Temperatures around 15–18°C provide some drying capacity but are not high enough to compensate for the persistent moisture input and high humidity.
Rain is forecast on each of the next four days (9.4mm, 1.5mm, 3.3mm, 0.7mm), with no adequate drying window in sight.
Recommendations
3
- Do not climb at Ravens Crag today or in the coming days — the rock is wet and the forecast offers no sufficient drying window.
- Monitor conditions from around 9 August onward; if the forecast dry day materialises, you would still need at least 48 hours of dry, breezy weather before visiting this slow-drying venue.
- Consider Bowden Doors (higher, more exposed) as a first option when conditions improve, as it will dry significantly faster than Ravens Crag.
Climbing Outlook