Condition Analysis
AI-powered assessment using site data and 14-day weather history
Raven Crag received 9.6mm of rain yesterday (April 12) with the last light showers ending late evening, and today is the first dry day following a prolonged wet spell totalling nearly 300mm over the past 28 days. While the south-facing volcanic rock can dry relatively quickly, only one dry day with moderate temperatures and limited wind is insufficient to confidently clear surface moisture and seepage lines — especially given the saturated ground conditions.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Known seepage lines on the left side of the crag are very likely to be active given 48mm in the last 7 days and nearly 300mm in 28 days, meaning significant parts of the crag will be wet regardless of surface drying.
- The south/SE aspect will receive reasonable solar radiation today (April 13) but cloud cover was high overnight and humidity remains around 80%, limiting overnight drying effectiveness.
- At 280m altitude, low cloud can envelop the crag even when the valley floor is clear — today's 80% humidity and recent saturated conditions make mist or hill fog a real possibility, which would prevent drying.
- The extremely wet recent period (84.7mm on March 24, repeated heavy rain through early April) means ground saturation is very high, and water seeping through cracks and weaknesses in the rock face will persist well beyond surface drying.
Warnings
2
- Volcanic rock friction drops dramatically when damp — even apparently dry-looking rock can be greasy in current conditions, posing a serious fall risk on multi-pitch trad routes.
- Low cloud may envelop the crag at 280m despite clear conditions in the valley; check conditions at crag level, not from below.
Reasoning
The rock received 9.6mm yesterday with light showers continuing into late evening, and following a 28-day period of nearly 300mm total precipitation, both surface moisture and active seepage lines are highly likely across much of the crag.
One dry day with moderate southerly winds (~16 km/h) and temperatures around 9°C on a south-facing aspect will begin surface drying, but is unlikely to fully clear all damp patches, seepage lines, and sheltered areas given the extreme recent saturation.
Borrowdale Volcanic rhyolite is non-porous and does not suffer structural weakening when wet, so hold breakage and rock damage are not concerns here.
Early April in the Lake District is an unpredictable transition period with short drying windows, high ambient humidity, and the potential for low cloud to re-wet the crag even on nominally dry days.
Contributing Factors
7
9.6mm fell yesterday, 48mm in the last 7 days, and a remarkable 299mm over 28 days, leaving the crag and surrounding hillside thoroughly saturated.
Today is the first precipitation-free day after yesterday's rain, providing insufficient drying time to clear seepage lines and sheltered damp patches.
The S/SE aspect receives good solar radiation during April daylight hours, which will aid surface drying on exposed faces if cloud breaks.
Southerly winds at ~16 km/h and a max of 9.3°C provide some drying capacity, though not exceptional for rapid clearance.
Humidity at 80% today limits evaporative drying and suggests the air is already moisture-laden, reducing the rate at which the rock surface can dry.
The prolonged wet spell means subsurface water flow through the crag will feed known seepage lines — particularly on the left side — for days after surface rain ceases.
The forecast shows 11.5mm tomorrow (April 14) and 19.9mm on April 15, meaning any drying achieved today will be reversed before a meaningful dry window opens.
Recommendations
3
- Wait for a sustained dry spell of at least 2–3 days before visiting; the forecast suggests no reliable window in the next 5 days.
- If you do visit, avoid routes on the left side of the crag where seepage lines are known to persist after heavy rain.
- Consider lower-altitude, well-drained crags with better wind exposure if you need a climbing fix during this wet period.
Previous Analyses
Do Not Climb
90%
2 days ago
Raven Crag is currently wet and unsuitable for climbing. Today has seen 7.6mm of rain on top of 27.3mm yesterday, with no consecutive dry days; the rock will be saturated on the surface with active seepage lines, making friction dangerously poor.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The left side of the crag has known persistent seepage lines that will be actively running after this sustained wet period — these areas may take several dry days to clear even though the rock itself is non-porous.
- Despite the favourable south/SE aspect, the crag sits at 280m where low cloud and hill fog can envelop the face even when the valley is clear, further inhibiting drying and reducing visibility on multi-pitch routes.
- The past 28 days have delivered 325.6mm of rain — an exceptionally wet spell even by Lake District standards — meaning the ground and vegetation around the crag will be waterlogged, with runoff feeding seepage lines from above.
- Multi-pitch trad routes like Bilberry Buttress and Centipede require committed climbing above gear; reduced friction on damp BVS rock at this altitude significantly increases the consequence of any slip.
Warnings
3
- The crag is actively wet today — climbing on wet BVS rock offers dangerously reduced friction, particularly on the sustained slab and wall pitches of classic routes.
- Multi-pitch trad routes at altitude in wet, windy conditions carry serious consequences; retreat from upper pitches is difficult once committed.
- Persistent seepage lines on the left side of the crag may remain active for days even after rain stops given the extreme recent saturation.
Reasoning
The rock is currently wet — 7.6mm of rain today following 27.3mm yesterday, with no dry days in the recent sequence, meaning the surface will be visibly damp with standing water in cracks and on ledges.
Despite the south-facing aspect and partial wind exposure, there has been zero consecutive dry days and humidity remains at 83%; meaningful drying cannot begin until sustained dry weather arrives, and even then seepage lines from the saturated ground above will persist.
BVS rhyolite is non-porous and does not suffer structural damage when wet, so hold breakage and rock conservation are not concerns here.
Early April in the Lake District is a transitional period with unreliable weather; the forecast shows further significant rain on the 15th (27mm) and 16th (9.3mm), limiting any meaningful drying window in the coming days.
Contributing Factors
8
7.6mm of precipitation today means the rock surface is currently wet with no opportunity to dry.
325.6mm in the past 28 days and 46.4mm in the past 7 days have left the crag and surrounding hillside thoroughly saturated, feeding persistent seepage.
There have been no consecutive dry days, so the crag has had no meaningful drying window whatsoever.
Humidity at 83% today significantly slows evaporation and surface drying even where the rock is exposed to wind.
The S/SE aspect means the crag catches sun for most of the day, which will aid rapid drying once dry weather arrives.
Wind at 30.6 km/h from the SW will help with surface drying once rain stops, though it cannot overcome active precipitation.
BVS rhyolite does not absorb water, so once rain stops and conditions improve, surface moisture will clear relatively quickly.
27mm forecast on the 15th and 9.3mm on the 16th will reset any drying progress made on the 13th–14th.
Recommendations
3
- Wait for at least one full dry day with sun and wind before considering a visit; tomorrow (13th) could begin drying but will not be sufficient alone.
- If visiting later this week, visually inspect the left side of the crag for active seepage before committing to routes in that area.
- Check the BMC RAD for any bird nesting restrictions at Raven Crag before visiting, as peregrine restrictions may apply during April.
Do Not Climb
92%
3 days ago
Raven Crag is currently wet following 21.2mm of rain today, with no dry days accumulated and over 300mm in the past 28 days. The rock will be thoroughly soaked with active seepage lines, making friction-dependent climbing on this volcanic rock unsafe.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The left side of the crag has known persistent seepage lines that will be actively running after the sustained heavy rainfall of recent weeks, and these can take several dry days to subside.
- Despite the south/SE aspect providing good solar exposure, today's heavy rain and ongoing precipitation mean no meaningful drying has occurred — the crag will be uniformly wet.
- At 280m altitude with temperatures around 5–6°C, evaporative drying is slow in early April even with the strong southerly winds today.
- Low cloud is common in Langdale during unsettled spells and can envelop the crag even when the valley floor appears clear, further reducing drying potential and visibility.
Warnings
3
- The crag is actively wet today with 21.2mm of rain — multi-pitch trad routes on slippery volcanic rock pose a serious fall risk.
- Persistent seepage lines on the left side of the crag will remain active for days given the extreme saturation from over 300mm of rain in the past month.
- Check BMC RAD for any active bird nesting restrictions at Raven Crag — peregrine and raven restrictions may be in effect from February through June.
Reasoning
The rock is currently wet from 21.2mm of rain today, following a persistently wet period with 314mm in the last 28 days and zero consecutive dry days.
Strong southerly winds (35.6 km/h) provide some drying potential, but with rain still falling today and further rain forecast tomorrow, no effective drying can begin until at least April 13th.
Borrowdale Volcanic rhyolite is non-porous and does not suffer structural damage when wet, so there is no rock conservation concern — the issue is purely friction and safety.
Early April in the Lake District is still a transitional period with cool temperatures (averaging 6.4°C over the past week), limited solar angle, and frequent Atlantic weather systems keeping the crag saturated.
Contributing Factors
6
21.2mm of rain today means the crag is actively wet with water running across the face.
314mm over the past 28 days with zero consecutive dry days means the crag, its seepage lines, and surrounding ground are thoroughly saturated.
Average temperature of 6.4°C over the past week provides limited evaporative drying potential even on this south-facing crag.
35.6 km/h southerly winds could assist surface drying but are irrelevant while rain is still falling.
The S/SE aspect will aid drying once rain stops, but this advantage cannot take effect until a sustained dry spell begins.
3.3mm forecast tomorrow and continued unsettled weather through April 15th (30.3mm) will prevent any meaningful drying window.
Recommendations
3
- Do not attempt to climb today — the crag is wet and friction on the volcanic rock will be dangerously poor.
- Monitor conditions for a potential brief window on April 13th if the forecast holds, but be prepared for damp rock and active seepage — visually inspect before committing.
- Consider alternative indoor climbing or lower-lying sheltered crags with better drainage if desperate to climb this week.
Do Not Climb
35%
4 days ago
Despite a brief dry spell on April 6–8, heavy rain on April 9 (10.3mm) followed by light precipitation today means the crag has had zero consecutive dry days. With 309.7mm in the last 28 days and seepage lines likely active, conditions are too uncertain for confident climbing — the rock surface may appear dry in places but residual dampness and active seepage are probable.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The left side of the crag is known for persistent seepage lines after heavy rain, and the extremely wet recent period (309.7mm in 28 days) means these are almost certainly running today.
- The south/SE aspect and 280m altitude mean the crag does catch good spring sunshine, but today's 7°C maximum and moderate SW wind provide only limited drying power after yesterday's 10.3mm.
- Low cloud can envelop the crag even when the Langdale valley floor is clear — at 280m this is a real risk in the current unsettled pattern, which would halt any drying.
- The ground and approach will be saturated after the prolonged wet spell, and water draining through the hillside above feeds seepage on the crag face for days after heavy rain.
Warnings
2
- Seepage lines are almost certainly active across the crag — wet volcanic rock is extremely slippery and multi-pitch falls on greasy BVS rock can be serious.
- Low cloud may envelop the crag without warning in the current unsettled pattern, reducing visibility and halting any drying.
Reasoning
The crag received 10.3mm yesterday and 0.6mm today with zero consecutive dry days; combined with 309.7mm over the last 28 days, the rock surface is likely damp and seepage lines will be actively running.
Today's moderate SW wind (25.6 km/h) and south-facing aspect provide some drying potential, but at only 7°C with 71% humidity, evaporation rates are modest — insufficient to fully dry the surface after yesterday's substantial rain and the saturated ground above.
Rhyolite/BVS rock does not suffer structural damage when wet, so hold breakage is not a concern — the risk is purely friction-related.
Early April in the Lake District is an unreliable period with short drying windows between frontal systems; the sun angle is improving but temperatures remain cool, and the saturated ground from a very wet March/April will sustain seepage for extended periods.
Contributing Factors
8
10.3mm fell yesterday and 0.6mm today, with no consecutive dry days established — the rock surface has not had time to dry.
309.7mm over the last 28 days has thoroughly saturated the hillside, feeding persistent seepage lines on the crag.
The S/SE aspect receives good solar radiation even in early April, which helps surface drying when the sun is out.
25.6 km/h SW wind today aids surface evaporation on this partially exposed crag.
A maximum of only 7°C today limits evaporation rates and slows drying compared to warmer conditions.
BVS rhyolite does not absorb water, so once surface moisture evaporates the rock can offer good friction — but it must be genuinely dry first.
Known seepage on the left side of the crag will almost certainly be running after the prolonged wet spell and recent rain.
71% humidity today and 77% average over the last week slow evaporation and may leave a film of moisture on the rock.
Recommendations
3
- Wait for at least two consecutive dry days with temperatures above 10°C before attempting routes, particularly those on the left side of the crag where seepage persists longest.
- If visiting the Langdale area regardless, consider the short walk up to visually inspect the crag — but be prepared to walk away if any dampness is visible or the rock feels greasy underfoot.
- Check the UKC and FRCC condition reports for real-time updates from other climbers, as localised drying can vary significantly across the crag face.
Do Not Climb
70%
5 days ago
Today has seen 4.1mm of rain with high humidity (86%) and westerly wind, following a very wet recent period (nearly 344mm in 28 days). Although Raven Crag had two excellent drying days on April 7–8, today's rain will have re-wetted the surface, and known seepage lines on the left side of the crag are likely active given the saturated ground conditions.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The left side of the crag has persistent seepage lines that will almost certainly be running after 4mm of rain today on top of heavily saturated ground from a very wet March–April period.
- The south/SE aspect and 280m altitude mean the crag catches good afternoon sun when clear, but today's westerly wind and 86% humidity limit drying potential significantly.
- The short approach from the New Dungeon Ghyll means conditions can be assessed quickly without a major time commitment — worth checking before writing the day off entirely.
- At 280m, Raven Crag can be enveloped in low cloud even when the valley floor is clear, which would deposit additional moisture on the rock surface and prevent drying.
Warnings
2
- Seepage lines on the left side of the crag are very likely active given the extremely saturated ground conditions from a prolonged wet period.
- Low cloud may engulf the crag at 280m even when the valley is clear, depositing additional moisture and reducing visibility on multi-pitch routes.
Reasoning
The rock surface is likely damp today: 4.1mm of rain has fallen, humidity is 86%, and the preceding two dry days (April 7–8) would not have been sufficient to drain deep seepage given the extremely wet preceding weeks (over 100mm fell between March 24 and April 5).
The excellent drying window on April 7–8 (dry, warm to 15.5°C, southerly aspect in sun, low humidity at 59%) would have dried exposed surfaces well, but today's rain has undone much of that progress and seepage from saturated ground behind the crag will take longer to abate.
Borrowdale Volcanic rhyolite is non-porous and does not suffer structural weakening when wet, so hold breakage is not a concern at this crag.
Early April in the Lakes is transitional — days are lengthening and solar angle is improving, but temperatures remain cool (averaging 6.7°C over the past week) and frequent Atlantic fronts maintain high background moisture levels.
Contributing Factors
7
Active precipitation today will have re-wetted the rock surface and reactivated seepage lines on an already saturated hillside.
344mm in 28 days means the ground behind the crag is thoroughly saturated, feeding persistent seepage even after short dry spells.
86% humidity today with 80% average over the past week severely limits evaporative drying of rock surfaces.
Two consecutive dry days with warm temperatures (up to 15.5°C), low humidity (59%), and southerly sun on this S/SE-facing crag would have dried exposed surfaces well before today's setback.
The S/SE aspect receives excellent solar radiation when skies clear, giving Raven Crag above-average drying potential for a Lake District mountain crag.
Partial wind exposure at 280m with 28.4 km/h westerly today aids surface evaporation once rain stops.
Rhyolite does not absorb water so only surface moisture and seepage need to clear, not internal saturation.
Recommendations
3
- Do not climb today — rain and high humidity mean the rock will be slippery and seepage lines active.
- If visiting tomorrow (April 10), assess conditions on arrival: the forecast is nearly dry (0.3mm) with lower humidity (71%) and southerly wind, but the crag may still have damp patches and active seepage from the saturated hillside.
- Check BMC RAD for current bird nesting restrictions at Raven Crag — peregrine nesting season runs February–June and restrictions may be in place.
Marginal — Assess Conditions
55%
8 days ago
After an extremely wet March and early April (378mm in 28 days), yesterday's rain cleared by mid-afternoon and the crag has had roughly 18 hours of drying with today forecast completely dry. The south-facing aspect and moderate wind should help surface drying, but given the saturated ground and persistent seepage risk, climbers should visually check conditions on arrival before committing to routes.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Known seepage lines on the left side of the crag are very likely to be active given the exceptional recent rainfall totals (378mm in 28 days), and could take several more dry days to subside.
- The south/south-east aspect will receive good solar radiation today with clearing skies, significantly aiding surface drying on the main buttresses through the morning and afternoon.
- Low cloud can envelop the crag at 280m even when the valley is clear — overnight humidity was 90% with a frost at -0.4°C, so any residual moisture may have formed ice in cracks and shaded areas early this morning.
- The short approach from the New Dungeon Ghyll means climbers can easily walk up, assess conditions, and retreat without significant wasted effort if the rock is still damp.
Warnings
2
- Seepage lines are very likely active given the extreme recent rainfall — do not assume the entire crag is dry just because exposed faces appear so.
- Overnight frost may have left ice in shaded cracks and on ledges at 280m; check gear placements and footholds carefully, especially on north-facing sections of routes.
Reasoning
The last measurable rain fell as scattered light showers yesterday (5.5mm total, last at ~21:00), following weeks of heavy and persistent rainfall; surface moisture on exposed south-facing rock should be largely evaporated by mid-morning today, but seepage and sheltered areas are likely still damp.
Approximately 18 hours since the last shower with overnight conditions calm and cold (frost to -0.4°C), followed by a dry day with 19 km/h southerly wind and sun on this south-facing crag — good surface drying conditions, though the overnight frost may have temporarily locked moisture in cracks.
Rhyolite/BVS rock is non-porous and not at risk of structural damage from wetness; the concern is purely friction loss on damp surfaces and potential ice in shaded cracks from last night's frost.
Early April in the Lake District is transitional — days are lengthening with reasonable solar angles for the south aspect, but overnight frost (-0.4°C) and saturated ground from an exceptionally wet period mean drying is slower than it would be in summer.
Contributing Factors
7
378mm in 28 days and 60mm in the last 7 days represent exceptionally wet conditions, saturating the hillside and feeding seepage lines.
Zero precipitation forecast today with 10.5°C maximum and southerly wind directly onto this south-facing crag provides good drying conditions.
The S/SE aspect will receive direct sunlight for most of the day, warming the rock surface and accelerating evaporation of residual moisture.
The -0.4°C minimum may have frozen residual moisture overnight, which will release as ice melts through the morning — potentially creating brief damp patches.
Just one consecutive dry day after prolonged wet weather is marginal for seepage lines and sheltered corners to fully dry, even on non-porous rock.
19 km/h southerly wind hitting the south-facing crag directly will assist surface drying throughout the day.
Average humidity of 84% over the last week and 77% today limits evaporative drying potential compared to drier spells.
Recommendations
3
- Wait until late morning or early afternoon to allow sun and wind to dry the surface; the main buttresses should be noticeably drier by midday.
- Avoid routes on the left side of the crag where seepage lines are known to persist after heavy rain — stick to the well-drained central and right-hand buttresses.
- Carry a towel and test friction carefully on the first few moves; if the rock feels glassy or greasy, retreat and wait for tomorrow's warmer and drier forecast.
Do Not Climb
90%
9 days ago
Raven Crag is currently wet and unsuitable for climbing. Today has seen 6.1mm of rain on top of a very wet preceding week (67mm in 7 days, 381mm in 28 days), and with zero consecutive dry days the rock surface will be damp and friction severely compromised. Tomorrow and the day after look promising for drying, but the crag needs time to shed accumulated moisture.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Known seepage lines on the left side of the crag will be running heavily after the prolonged wet spell — these can take several dry days to clear even when the main face appears dry.
- The south/SE aspect is a significant advantage here: once skies clear tomorrow, the crag will receive direct solar radiation for most of the day, accelerating surface drying considerably.
- At 280m, low cloud and hill fog can envelop the crag even when the valley floor is clear — check conditions from the New Dungeon Ghyll car park before committing to the approach.
- The exceptionally wet March (381mm in 28 days) means groundwater levels are high; water may weep from cracks and horizontal breaks that are normally dry, even after surface rock appears to have dried.
Warnings
2
- Multi-pitch trad routes here are serious when friction is reduced — a slip on damp BVS rock on routes like Pluto (E2) could have grave consequences.
- Seepage lines from the prolonged wet spell may persist for several days even after surface rock appears dry — test friction carefully on lower pitches before committing higher.
Reasoning
The rock is currently wet — 6.1mm fell today, 12.8mm yesterday, and 25.3mm the day before, with zero consecutive dry days and extremely high cumulative rainfall over the past month.
Strong westerly winds today (43.6 km/h) will help strip surface moisture, but the south-facing aspect receives limited benefit from a west wind, and meaningful drying requires the dry, sunny conditions forecast for April 6–7.
As non-porous Borrowdale Volcanic rock, there is no risk of structural damage from wet climbing — the concern is purely friction loss and climber safety on what are often bold trad routes.
Early April in the Lakes is still a transitional period with cool temperatures (avg 5.5°C last week), limited solar intensity, and frequent Atlantic weather systems — drying capacity is well below summer levels.
Contributing Factors
7
6.1mm today following 12.8mm yesterday and 25.3mm on April 3rd means the rock surface is actively wet with no drying window.
381mm in 28 days is exceptionally high even for the Lake District, saturating the ground and feeding persistent seepage lines across the crag.
There has been no meaningful dry spell — the last period without rain was March 18–21, since broken by repeated heavy frontal systems.
84% average humidity over the past week significantly slows evaporation and keeps the rock surface damp even between showers.
43.6 km/h westerly winds will assist surface drying, though the south-facing aspect is partially sheltered from a direct west wind.
April 6–7 forecast dry with lower humidity (70–72%), southerly winds, and warmer temps up to 12.8°C — good drying conditions for this south-facing crag.
Average temperatures of 5.5°C over the past week limit evaporative drying capacity compared to summer conditions.
Recommendations
3
- Do not climb today — the crag is wet and friction on BVS rock will be dangerously poor, especially on the bolder routes.
- Consider visiting on April 7th after two full dry days with sun on the south face, but assess conditions on arrival and avoid known seepage areas on the left side of the crag.
- Check conditions visually from the valley floor before committing — if the crag looks dark or streaked, the rock is still damp and should be left alone.
Do Not Climb
90%
10 days ago
Raven Crag is currently wet and unsuitable for climbing. Today has seen 8.5mm of rain on top of an extremely wet preceding period (89mm in 7 days, 371mm in 28 days), and there have been zero consecutive dry days — the rock will be saturated on the surface with active seepage lines almost certain.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The left side of the crag has known persistent seepage lines that will be actively running after the prolonged heavy rainfall of the past month — these could take several dry days to subside.
- Despite the favourable south/SE aspect, the crag sits at 280m where low cloud and mist can maintain surface dampness even when the valley floor appears clear — a real risk given current 86% humidity.
- The short approach from the New Dungeon Ghyll means climbers can easily walk up to visually assess conditions on drier days without committing significant time.
- Strong SW winds today (44 km/h) will help surface drying once rain stops, but at this altitude wind-driven moisture and spindrift can keep the rock damp.
Warnings
3
- Multi-pitch trad routes on wet volcanic rock pose a serious fall risk due to dramatically reduced friction — do not attempt to climb today.
- Persistent seepage lines on the left side of the crag may remain active for several days even after surface rock appears dry.
- Strong winds (44 km/h gusting higher at crag level) present an additional hazard for exposed multi-pitch climbing today.
Reasoning
The rock surface is currently wet from today's 8.5mm of rain, compounded by an extraordinarily wet 28-day period totalling 371mm, meaning ground saturation will be feeding seepage lines and keeping the crag damp.
Zero consecutive dry days and persistent rainfall mean no meaningful drying has occurred; while the south aspect and strong winds will aid surface evaporation once rain ceases, deeper seepage requires multiple dry days to clear.
Rhyolite/BVS rock does not suffer structural damage when wet, so there is no hold-breakage concern — the risk is entirely about dangerously reduced friction on damp volcanic rock.
Early April in the Lake District is a transitional period with low sun angles, cool temperatures (average 5.8°C this week), and short effective drying windows — conditions are marginal even in dry spells at this time of year.
Contributing Factors
8
8.5mm of precipitation today with high humidity (86%) means the crag is actively wet right now.
371mm over 28 days and 89mm in the last 7 days represent a prolonged saturation period that will sustain seepage lines for days.
There has not been a single fully dry day in the recent record, preventing any meaningful drying cycle from beginning.
Average humidity of 86% over the past week severely limits evaporative drying even during rain-free hours.
The S/SE aspect receives good solar radiation which will accelerate surface drying once a dry spell establishes.
Today's 44 km/h SW winds and continued strong winds forecast will help strip surface moisture once precipitation stops.
Average temperatures around 5.8°C limit evaporation rates and extend drying times compared to summer conditions.
At 280m the crag is susceptible to low cloud and orographic moisture that can keep surfaces damp even during valley-level dry spells.
Recommendations
3
- Do not climb today — the crag is wet and friction on BVS rock will be dangerously poor on multi-pitch trad routes.
- Monitor conditions from April 6th onwards when a dry spell with southerly winds and warmer temperatures (up to 13°C) is forecast, but allow at least 1–2 full dry days before committing.
- Use the short approach to visually check the crag face for seepage and dampness before climbing — the left side seepage lines will be the last to dry.
Do Not Climb
90%
11 days ago
Raven Crag is currently wet and unsuitable for climbing. Today has seen 22mm of rain on top of an extremely wet recent period (81mm in the last 7 days, 367mm in the last 28 days), with zero consecutive dry days — the rock will be saturated on the surface and seepage lines will be running heavily.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The known seepage lines on the left side of the crag will be running heavily after 81mm in the past week and 22mm today, and these can take several dry days to subside after prolonged wet spells.
- Despite the south/SE aspect providing good solar drying potential, March temperatures averaging only 5.5°C and persistent high humidity (84%) severely limit evaporation rates at 280m altitude.
- Multi-pitch trad routes here (Bilberry Buttress, Centipede, Pluto) are particularly consequential when friction is compromised — a slip on a long pitch with trad gear is far more serious than on a single-pitch venue.
- Low cloud frequently envelops the crag even when the valley floor is clear, which could further delay drying and reduce visibility on the upper pitches over the coming days.
Warnings
3
- The crag is currently wet and actively receiving rain — climbing today risks serious injury from friction loss on multi-pitch trad routes.
- Persistent seepage lines on the left side of the crag will remain active for several days even after rain stops given the extreme cumulative rainfall.
- Low cloud may obscure the crag and create additional dampness even on days without recorded precipitation at valley level.
Reasoning
The rock surface is currently wet from 22mm of rain today, compounded by 81mm over the past 7 days and a staggering 367mm over the past 28 days — the crag is thoroughly soaked with active surface water and running seepage lines.
Despite partial wind exposure (27 km/h W) and a south-facing aspect, there have been zero consecutive dry days, temperatures are cool (5.5°C average), and humidity is high (84%), meaning no meaningful drying has occurred recently.
As non-porous Borrowdale Volcanic rhyolite, there is no risk of structural damage from the wet conditions — the concern is entirely about friction loss and climber safety.
Early April in the Lake District at 280m is still a marginal time of year with weak sun angles, short effective drying windows, and frequent Atlantic weather systems — the prolonged wet spell is typical for the season.
Contributing Factors
7
22mm of precipitation today means the rock surface is actively wet with no opportunity to dry.
81mm in the past 7 days and 367mm over 28 days represents a prolonged saturation period that will keep seepage lines active for days.
There has been no uninterrupted dry period to allow even surface drying, let alone subsidence of seepage.
Average humidity of 84% and temperatures around 5–8°C severely limit evaporative drying at this altitude.
The S/SE aspect will promote rapid surface drying once a dry spell arrives, but cannot help while rain continues.
Partial wind exposure with 27 km/h westerly winds aids surface evaporation, but is insufficient to dry the crag while precipitation continues.
6.3mm forecast tomorrow and 1.8mm on the 5th means the crag will not begin a meaningful drying window until April 6th at the earliest.
Recommendations
3
- Do not climb today — the crag is actively wet and friction on BVS rock will be dangerously poor, especially on the multi-pitch routes.
- The earliest realistic window for assessment is April 7th after two forecast dry days with favourable southerly sun and lower humidity, but seepage lines may still persist.
- Check BMC RAD for bird nesting restrictions before planning a visit — peregrine and raven nesting season is well underway at Lake District crags.
Do Not Climb
60%
12 days ago
Raven Crag received 9mm of rain yesterday evening and has had only a few hours of overnight drying in cool, humid conditions; the rock surface is very likely still damp in places. With 81mm in the last 7 days and persistent seepage lines from the prolonged wet spell, friction on the volcanic rock will be compromised despite the south-facing aspect.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Known seepage lines on the left side of the crag will almost certainly be running after 81mm in the past week, and yesterday evening's 9mm shower will have refreshed them.
- The south/south-east aspect will receive solar radiation through the day today, which helps surface drying, but today's maximum of only 7°C and moderate SW wind limits evaporation rate.
- Low cloud frequently affects this crag even when the Langdale valley floor is clear — at 280m, cloud base may sit on the crag in the current unsettled pattern, depositing further moisture.
- The extremely wet preceding month (342mm in 28 days) means ground saturation above the crag is very high, feeding seepage and drainage lines for days even without further rain.
Warnings
2
- Seepage lines on the left side of the crag are almost certainly active given extreme ground saturation — avoid routes in these areas entirely.
- Low cloud may envelop the crag today despite clear conditions in the valley, depositing additional moisture and reducing visibility on multi-pitch routes.
Reasoning
Rain fell yesterday evening (approximately 9mm between 16:00–19:00) and a trace of precipitation was recorded overnight, meaning the rock surface is almost certainly still damp this morning, particularly in shaded cracks and seepage zones.
Only ~6 hours of cool overnight conditions (3–5°C, 83–87% humidity, light winds) have elapsed since the last rain — wholly insufficient for reliable drying even on south-facing non-porous rock at this altitude.
Borrowdale Volcanic rhyolite is non-porous and does not suffer structural weakening when wet, so there is no hold-breakage or rock-damage concern.
Early April in the Lake District is still a transitional season with short days, low sun angle, cool temperatures, and frequent Atlantic frontal systems — the current unsettled pattern is typical and drying windows are limited.
Contributing Factors
7
Approximately 9mm fell between 16:00 and 19:00 yesterday, thoroughly wetting the crag surface with insufficient drying time since.
81mm in the past 7 days and 342mm over 28 days means ground saturation is extreme, feeding persistent seepage lines on the crag.
Average humidity of 83% over the last week, with overnight values near 87%, severely limits evaporation rate from rock surfaces.
The S/SE aspect receives the best available solar radiation, giving Raven Crag an above-average drying rate compared to other Lakes mountain crags.
Today's forecast maximum of 7°C and an average of 5.6°C over the last week provide limited thermal energy for evaporation.
A SW wind of ~17 km/h today provides some airflow across the face, assisting surface drying through the afternoon.
Volcanic rhyolite does not absorb water internally, so once surface moisture evaporates the rock regains full friction — no extended drying time needed.
Recommendations
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- Wait for a longer dry window — the rock may feel dry on the surface by this afternoon but seepage lines and sheltered areas will remain damp; tomorrow brings heavy rain so today offers no useful extension.
- If you do visit, check the right-hand side of the crag first as it tends to dry faster than the seepage-prone left side, and test friction carefully on lower holds before committing to routes.
- Consider alternative plans for the coming days; the forecast shows significant rain on April 3–4 with the next realistic climbing window being April 6 if conditions allow.
Climbing Outlook