Condition Analysis
AI-powered assessment using site data and 14-day weather history
Five consecutive dry days with good temperatures, moderate wind, and a south/south-west aspect have allowed the slate surfaces at Buckstone How to dry thoroughly. Conditions today are genuinely dry, though humidity is elevated at 87% so shaded ledges may feel slightly damp.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The polished slate on quarried surfaces at Buckstone How becomes extremely greasy with even light moisture — friction loss is dramatic and sudden, so any dampness should be treated as a no-go.
- Layered ledges and horizontal breaks can trap standing water after rain, taking longer to drain than the steep faces; check these features even after a dry spell.
- The exposed Honister Pass position means the crag benefits from strong drying winds, but also means cloud can roll in suddenly at 360m, depositing condensation on rock surfaces.
- The short approach from Honister Pass car park means you can easily retreat if conditions deteriorate — worth keeping an eye on weather changes during the session.
Warnings
2
- Rain is forecast from August 17 with heavy falls on August 18 (18.4mm) — this dry window is closing fast.
- If cloud descends to crag level today (humidity is 87%), condensation will make polished slate dangerously slippery with no warning.
Reasoning
Five full dry days since the last rain (7.5mm on Aug 9), with warm temperatures (up to 25°C) and consistent wind, mean surface moisture on this non-porous slate should be fully evaporated.
The S/SW aspect has received strong solar radiation over the dry spell, and winds of 14–20 km/h have accelerated surface drying; the combination is highly effective for exposed slate.
Slate is non-porous and does not suffer structural weakening when wet, so hold breakage from moisture absorption is not a concern.
Mid-summer conditions with long daylight hours and warm temperatures provide the best drying window of the year; no freeze-thaw risk at this time.
Contributing Factors
6
No measurable precipitation since August 9, giving ample time for all surface water to evaporate from non-porous slate.
South and south-west facing rock has received maximum solar radiation during the extended dry spell, accelerating surface drying.
Consistent winds of 14–20 km/h across the exposed pass position have efficiently stripped surface moisture.
Today's humidity at 87% is high and could leave a slight film of condensation on shaded surfaces, particularly early morning or in sheltered corners.
Temperatures reaching 19–25°C over recent days support rapid evaporation even at 360m altitude.
Rain returns from August 17 with significant precipitation forecast, making today and tomorrow the last good window.
Recommendations
3
- Climb today or early tomorrow to take advantage of the dry window before rain arrives from August 17 onwards.
- Check ledges and horizontal layered features for any pooled water or dampness before committing to routes — these drain last.
- Monitor cloud level at 360m during your session; if mist rolls in, the slate will become greasy very quickly and you should stop climbing.
Previous Analyses
Likely Safe to Climb
85%
2 days ago
Buckstone How has had four consecutive dry days with good temperatures, a south-facing aspect, and steady wind, providing ample drying time for non-porous slate surfaces. Today is an excellent window before a wetter spell moves in from tomorrow onwards.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Polished quarried slate at Buckstone How becomes dangerously slippery with even light moisture — surface friction drops far more than on natural rough slate.
- The exposed Honister Pass position means the crag benefits from strong wind drying but is also prone to cloud envelopment at 360m, which can deposit condensation on rock surfaces.
- Layered slate ledges can hold standing water after rain, creating localised damp patches even when the main face appears dry — check horizontal features before committing.
- Humidity rises sharply this evening (above 90% from 21:00), so condensation may form on rock surfaces — climb during the drier midday-to-afternoon window.
Warnings
1
- Rain is forecast from tomorrow — this is likely the last good climbing day for nearly a week.
Reasoning
Four fully dry days since the last rain on Aug 9 (7.5mm), combined with moderate winds and warm temperatures up to 25°C, mean surface moisture on this non-porous slate should be fully evaporated.
The south/south-west aspect has received strong solar radiation over these dry days, and sustained winds of 14–19 km/h have accelerated evaporation — well within the drying envelope for exposed non-porous rock.
Slate does not absorb water so there is no structural weakening risk; the concern is purely surface friction on polished faces.
Mid-summer provides long daylight hours and warm temperatures, both favourable for drying; the recent wet spell (57mm over 28 days) is typical for a Lake District summer but the current dry window is well-established.
Contributing Factors
6
No precipitation since Aug 9, giving non-porous slate ample time to shed all surface moisture.
S/SW aspect at midsummer receives excellent solar radiation, accelerating surface drying.
Steady winds of 14–19 km/h over the drying period promote rapid evaporation from slate surfaces.
Temperatures reaching 21–25°C over the dry spell enhance evaporation rates significantly.
Humidity climbs above 90% after 21:00 tonight, risking condensation on polished slate surfaces late in the day.
Light rain forecast from Aug 14 onwards with a heavy 21mm event on Aug 17, closing this dry window.
Recommendations
3
- Climb today during the midday-to-early-evening window (roughly 10:00–18:00) when humidity is lowest and solar warming is strongest.
- Visually check horizontal ledges and layered features for any residual dampness before committing to routes, especially lower-angle slabs.
- Avoid climbing after about 19:00 as humidity rises sharply and condensation risk increases on polished slate.
Likely Safe to Climb
85%
3 days ago
Three consecutive dry days with moderate wind and warm temperatures on this exposed, south-facing slate crag mean surfaces should be well dried. Today offers an excellent window before conditions deteriorate significantly from the 14th onward.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The polished quarried slate at Buckstone How becomes extremely greasy with even light moisture — surface friction is the primary concern, not structural damage.
- Layered ledges and horizontal breaks can hold standing water after rain; even after the main face dries, these features may retain dampness in sheltered spots.
- The exposed Honister Pass position and S/SW aspect mean the crag benefits from strong wind-drying and good solar heating, making it one of the faster-drying slate venues in the Lakes.
- High cloud cover today (near 100% for much of the day) may slow final surface drying slightly despite warm temperatures, but the 3-day dry spell and consistent wind compensate well.
Warnings
1
- A significant wet spell is forecast from August 14–17 with over 50mm of rain expected — plan accordingly and do not rely on conditions remaining good beyond tomorrow.
Reasoning
Three full dry days following light rain on the 9th (7.5mm), combined with strong winds (14–30 km/h) and warm temps, should have fully dried the non-porous slate surfaces.
The S/SW aspect and exposed hilltop position with sustained winds averaging 15–20 km/h over the last three days provide excellent drying conditions for non-porous slate, even with today's persistent cloud cover.
Slate is non-porous and not susceptible to structural weakening from moisture; the risk is purely surface friction loss when damp.
Mid-summer conditions with long daylight hours and warm temperatures are ideal; no freeze-thaw concerns at this time of year.
Contributing Factors
6
No precipitation since August 9th (7.5mm), giving ample time for surface moisture to evaporate from non-porous slate.
Winds of 14–20 km/h over the drying period on this exposed pass position accelerate surface evaporation significantly.
Temperatures reaching 21–25°C over the last two days aid rapid surface drying.
Near-100% cloud cover reduces direct solar radiation but temperatures remain high and wind continues to aid drying.
Significant rain fell between July 25 and August 9, but the 3-day dry window is sufficient for non-porous slate surface drying.
Rain returns on the 14th with heavy totals forecast (18mm on the 16th, 32mm on the 17th), closing the current dry window.
Recommendations
3
- Climb today or tomorrow (Aug 13) to take advantage of the current dry window before rain returns on the 14th.
- Check layered ledges and horizontal breaks for residual standing water before committing to routes — these features can hold moisture longer than vertical faces.
- Carry a towel and test friction on lower holds before attempting harder routes, as polished slate can retain subtle dampness that only becomes apparent under load.
Marginal — Assess Conditions
60%
5 days ago
Yesterday's 7.5mm rain and a persistently wet week (33mm in 7 days) mean the polished slate surfaces may still hold residual dampness this morning, but today's dry weather, dropping humidity through the afternoon, and the exposed S/SW aspect should allow adequate surface drying by mid-afternoon. Climbers should visually and tactilely check the rock before committing, especially on lower-angled or ledgy terrain.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Buckstone How's polished Skiddaw Slate becomes extremely greasy with even a thin film of moisture — the layered ledges can hold standing water and seepage longer than the steeper faces.
- The exposed Honister Pass position means strong winds accelerate surface drying, but at 360m the crag can sit in cloud or mist when the valley is clear, re-wetting surfaces with condensation.
- The south/south-west aspect receives strong solar radiation through summer afternoons, making the period from roughly 13:00–17:00 the best drying window on a day like today.
- High humidity overnight (90%+) may cause condensation on cold slate surfaces in the early morning — wait for the sun to warm the rock before climbing.
Warnings
2
- Polished slate at this venue can feel deceptively dry to the eye while retaining a thin moisture film — always palm-test holds before trusting friction.
- Cloud may roll in at 360m despite valley sunshine; if mist descends, the rock will re-wet rapidly and conditions should be considered unsafe.
Reasoning
7.5mm fell yesterday and 0.6mm the day before, following a prolonged wet spell totalling 33mm in the past week; although today is dry, the slate surfaces likely carried residual dampness into the morning given overnight humidity of 95%.
The S/SW aspect and moderate NW wind (~10–12 km/h) through the morning, combined with humidity dropping from 95% to 61% by mid-afternoon, should dry non-porous slate surfaces within a few hours of direct sun — expect usable conditions from early-to-mid afternoon.
Slate is non-porous so there is no risk of structural weakening or hold breakage from moisture; the concern is purely surface friction on polished quarried faces.
Mid-summer provides long daylight hours and reasonable temperatures (peaking ~16°C at altitude), giving ample time for afternoon drying and a comfortable climbing window.
Contributing Factors
6
33mm over the past 7 days including 7.5mm yesterday means residual surface moisture and seepage on ledges is likely this morning.
Today is forecast entirely dry with clearing skies and humidity dropping to the low 60s by afternoon, promoting rapid surface drying.
Moderate NW winds of 10–12 km/h across the exposed Honister Pass will help strip surface moisture from the slate.
Overnight humidity exceeded 94%, likely causing condensation on cold slate that will persist into mid-morning.
The south-facing orientation receives strong solar radiation through the afternoon, warming and drying polished surfaces efficiently.
Buckstone How's polished Skiddaw Slate loses friction dramatically with even light moisture, demanding fully dry conditions for safe climbing.
Recommendations
3
- Wait until early-to-mid afternoon (13:00–14:00) to allow the sun and wind to fully dry the slate surfaces before climbing.
- Touch-test the rock in multiple locations — especially lower-angled slabs and recessed ledges — before committing; if any slickness is felt, wait longer or avoid those sections.
- Prioritise steeper routes with positive edges over slabby or friction-dependent lines, as steep ground sheds moisture faster and relies less on surface friction.
Do Not Climb
35%
5 days ago
Buckstone How received 5.6mm of rain today following a very unsettled fortnight with over 30mm in the last week alone; the polished slate surfaces will be greasy and dangerous. Although tomorrow is forecast dry with a breeze, a single day of drying after persistent wet weather is insufficient to trust the friction on polished Skiddaw Slate.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The polished quarried slate at Buckstone How becomes exceptionally greasy with even trace moisture — far more so than rough natural slate — and the layered ledges hold pooled water that takes time to drain.
- The exposed Honister Pass position means strong westerly winds have been driving rain directly onto the S/SW face during this wet spell, saturating every surface and seepage line.
- Humidity has been consistently above 80% for the past week, which significantly retards surface evaporation even on non-porous rock at this altitude.
- The short walk-in from Honister Pass car park makes it easy to check conditions in person before committing, which is advisable given the marginal outlook.
Warnings
2
- Polished slate at Buckstone How becomes extremely dangerous when damp — falls on greasy slab routes are high-consequence and difficult to protect.
- The recent prolonged wet spell means seepage from higher ground may persist for 1–2 days even after rain stops.
Reasoning
The crag received 5.6mm today on top of over 30mm in the past week, meaning all surfaces, ledges, and drainage lines will be thoroughly wet.
Despite the exposed position and S/SW aspect, a single dry day tomorrow with moderate 12 km/h winds and 80% humidity will not reliably dry polished slate surfaces and water-retaining ledges after this level of saturation.
Non-porous slate does not suffer structural weakening when wet, so hold integrity is not a concern.
Mid-summer conditions provide reasonable daylight and temperatures, but the recent spell of unsettled Atlantic weather with high humidity is typical of Lake District summers and slows drying considerably at 360m altitude.
Contributing Factors
7
5.6mm today and 31.8mm over the past 7 days means surfaces, ledges, and drainage channels are thoroughly soaked.
There have been no consecutive dry days leading into today, with rain falling on most days over the past two weeks.
Average humidity of 84% over the past week severely inhibits surface evaporation, even on non-porous rock.
Quarried Skiddaw Slate is notoriously slippery when damp, and even a thin moisture film makes climbing dangerous.
The exposed Honister Pass location means wind-assisted drying is effective once rain stops, helping surface water clear faster than at sheltered venues.
Tomorrow shows 0mm precipitation with dropping humidity to 80%, beginning a potential drying window.
The south-facing aspect will receive direct afternoon sun if skies clear, aiding surface drying.
Recommendations
3
- Wait for at least one full dry day with wind before attempting any routes — the earliest realistic window is August 11th, and even then assess conditions carefully on arrival.
- If visiting, prioritise steep wall routes with positive edges over slabs, which will remain dangerously slippery longest.
- Check the layered ledges and any seepage lines for standing water before committing — these features hold moisture well after wet spells.
Do Not Climb
45%
6 days ago
Despite today being dry with good wind, the crag has seen repeated rain over the past two weeks (26mm in the last 7 days alone) with only one consecutive dry day, and humidity remains high at 79%. The polished slate surfaces at Buckstone How are likely still damp in sheltered spots and on ledges, and heavy rain is forecast for tomorrow, making today a marginal window at best.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- The layered ledge structure of Buckstone How traps standing water after rain, and with repeated wet days since July 25th, these ledges may still hold residual moisture despite today's breeze.
- The polished Skiddaw Slate surfaces here are notoriously greasy — even thin films of moisture from high humidity or overnight condensation can drastically reduce friction, particularly on lower-angle terrain.
- The exposed Honister Pass position means the crag catches westerly and south-westerly rain directly, and the prevailing wind direction over recent wet days (W/SW) has driven moisture straight onto the south-facing rock.
- Cloud base at 360m in the Lake District frequently dips below the crag in unsettled spells like this — the crag may have been in cloud for extended periods, preventing effective drying even on nominally dry days.
Warnings
2
- Polished slate at Buckstone How can feel deceptively dry to the touch while still being dangerously greasy underfoot — do not rely on visual or touch assessment alone.
- Heavy rain (12.6mm) is forecast for tomorrow (Aug 9th); do not plan a trip for that day.
Reasoning
Only one dry day follows a prolonged unsettled spell with 26mm in the past week and humidity averaging 82%, so polished slate surfaces and layered ledges are very likely still carrying surface moisture.
Today's SW wind at ~25 km/h and south-facing aspect provide reasonable drying potential, but a single day is insufficient to clear moisture from ledges and sheltered features after such sustained wet weather.
Slate is non-porous and not at risk of structural weakening, so hold integrity is not a concern.
Mid-summer temperatures and daylight hours are favourable, but the current unsettled Atlantic pattern with high humidity is suppressing effective drying even in the warmest season.
Contributing Factors
6
26mm over the past 7 days across multiple wet days (Aug 4–7) with only one dry day since, leaving insufficient drying time for polished slate surfaces.
Humidity has averaged 82% over the past week and sits at 79% today, inhibiting evaporation and potentially causing condensation on cold slate surfaces.
Sustained SW wind at ~25 km/h today aids surface drying on this exposed pass, though it cannot fully compensate for just one dry day.
The S/SW aspect maximises solar input in summer, helping surface evaporation on directly sunlit rock.
Buckstone How's quarried and polished slate loses friction dramatically with even a thin moisture film, making marginal dampness a serious safety hazard.
12.6mm forecast for August 9th will re-saturate the crag and reset any drying progress made today.
Recommendations
3
- Wait for the sustained dry spell forecast from August 11–12 before visiting, when two consecutive dry days with lower humidity and SE winds should allow proper drying.
- If you do visit today, test friction carefully on lower-consequence holds before committing to anything committing — retreat if any slickness is detected.
- Check the Honister Pass webcam or local social media for real-time cloud base information, as the crag at 360m may be in cloud even when Buttermere valley is clear.
Do Not Climb
70%
7 days ago
Buckstone How has received significant rainfall over the past two weeks (50mm in 28 days, 27mm in the last 7 days alone), with today recording another 0.7mm and humidity at 85%. Although the exposed position and strong winds aid surface drying, the persistent wet spell with no consecutive dry days means polished slate surfaces are very likely still greasy and unsafe for climbing.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Polished quarried slate at Buckstone How becomes exceptionally greasy with even a thin film of moisture — friction loss is far more dramatic than on natural rough rock.
- The layered ledge structure traps water and slows drainage, meaning surface dampness can persist even when the rock is not visibly wet.
- The exposed Honister Pass position generates strong, consistent winds that strip surface moisture quickly — but high ambient humidity (83–94% recently) counteracts this by preventing full evaporation.
- The short walk-in from Honister Pass car park means conditions can be assessed on arrival without a major time commitment.
Warnings
2
- Polished slate at Buckstone How can feel deceptively dry to the eye while still carrying an invisible moisture film that drastically reduces friction — test before committing.
- The recent prolonged wet spell means layered ledges may harbour standing water and hidden damp patches even after surfaces appear dry.
Reasoning
With rain on 4 of the last 5 days (totalling ~14mm), 0.7mm today, and sustained humidity above 80%, the rock surfaces are almost certainly still damp or at least carrying a greasy film.
Strong SW winds (22–33 km/h) and the south-facing aspect would normally promote rapid drying, but with zero consecutive dry days and humidity at 85%, the wind is cycling moist air across the rock rather than effectively drying it.
Slate is non-porous so there is no structural weakening concern; the sole risk is the extreme friction loss on polished surfaces when even lightly damp.
Mid-summer conditions should favour drying, but the current unsettled Atlantic weather pattern with persistent frontal rain is keeping conditions poor at this 360m altitude.
Contributing Factors
6
Rain has fallen on most of the last 10 days with 27mm in the past week and no consecutive dry days, keeping surfaces consistently wet.
Humidity has averaged 83% over the last 7 days, severely limiting evaporative drying even on this exposed crag.
Sustained winds of 22–33 km/h strip surface water quickly, and tomorrow's forecast of 28 km/h SW will help.
The S/SW aspect receives good solar radiation which aids surface drying when the sun breaks through.
Even a thin residual moisture film on Buckstone How's polished slate reduces friction dramatically, making moves unsafe long before the rock looks visibly wet.
Today's 0.7mm means the drying clock has effectively reset, requiring at least a full dry day with wind before surfaces will be reliably friction-safe.
Recommendations
3
- Wait for at least one full dry day with wind and lower humidity before climbing — the earliest viable window may be August 11th after the rain on the 9th and 10th clears.
- If visiting on the 8th, perform a thorough friction test on low-consequence ground before committing to any routes — retreat if the slate feels at all slick.
- Focus on steeper routes with positive edges if conditions are borderline, as slabs and lower-angled faces will be dangerously greasy.
Do Not Climb
35%
9 days ago
Buckstone How has been battered by a prolonged wet spell — over 30mm in the last 7 days with rain again this morning — and despite a drier afternoon window, high humidity and 100% cloud cover mean the polished slate surfaces are very unlikely to have dried sufficiently for safe friction. We recommend waiting for a sustained dry spell.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Polished quarried slate at Buckstone How becomes extremely greasy with even a thin film of moisture, making friction-dependent moves dangerous despite the rock being non-porous.
- The layered ledge structure traps surface water and slows drainage, so even after rain stops the rock can remain wet longer than the exposed position might suggest.
- At 360m on Honister Pass, the crag frequently sits in cloud or mist when humidity exceeds ~85%, depositing condensation that keeps surfaces damp independently of rainfall.
- The exposed SW-facing aspect and strong westerly winds will aid drying once rain stops, but persistent high humidity (83–94%) negates much of this advantage.
Warnings
2
- Polished slate at Buckstone How is treacherously slippery when damp — falls on friction-dependent routes are a serious injury risk even when the rock merely looks slightly moist.
- Persistent wet and windy conditions at 360m combined with temperatures around 10–14°C create a significant wind-chill and hypothermia risk if caught out.
Reasoning
Rain fell this morning (intermittent showers totalling ~3.9mm today on top of 31mm in the past week), and humidity remains above 70% even in the afternoon dry window — the slate surfaces will still carry a moisture film.
Although winds are moderate (19–25 km/h) and the S/SW aspect would normally aid drying, 100% cloud cover through the morning and persistent humidity in the 70–90% range severely limit effective drying of the polished slate.
Slate is non-porous so there is no structural weakening concern, but the slipperiness hazard on polished surfaces is acute and functionally equivalent to an unsafe condition.
Mid-summer conditions should be favourable, but the current unsettled Atlantic weather pattern with repeated fronts is producing conditions more typical of autumn at this altitude.
Contributing Factors
6
Over 31mm in the last 7 days across multiple rain events with 3.9mm again today, keeping surfaces persistently wet.
Humidity has averaged 83% over the past week and remains 70–96% today, preventing effective surface drying even during dry hours.
At 360m with 100% cloud cover and >90% humidity through the morning, the crag is likely sitting in or just below cloud, depositing additional condensation.
Sustained westerly/SW winds of 19–25 km/h across the exposed pass position will strip surface moisture once rain stops and humidity drops.
Even a thin moisture film on the characteristically polished Skiddaw Slate dramatically reduces friction, making slabs and smearing moves dangerous.
No precipitation is forecast from 11:00 to 22:00 today, offering some drying time, though humidity remains elevated.
Recommendations
3
- Wait for at least one full dry day with humidity below 75% and wind before attempting routes — the forecast suggests August 11th may be the earliest realistic opportunity.
- If visiting the area, consider lower-altitude non-polished alternatives or use the time to scout approaches and check conditions visually without committing to climb.
- Carry a towel and test friction on low holds before committing to any route — if your shoe slips at all on a low slab, the crag is not in condition.
Do Not Climb
92%
11 days ago
Buckstone How is currently wet from today's rain (10.8mm) with 100% cloud cover and near-saturation humidity, and tomorrow brings a very heavy 36.8mm deluge. The polished slate surfaces will be extremely greasy and dangerous; conditions are unsuitable for climbing today and for several days ahead.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Polished quarried slate at Buckstone How becomes exceptionally slippery with even a thin film of moisture — far more treacherous than natural rough slate.
- The layered ledge structure traps standing water and prolongs surface dampness even though the rock itself is non-porous.
- The exposed Honister Pass position aids wind-drying but also means the crag sits in cloud during prolonged westerly/south-westerly fronts, keeping surfaces damp via condensation.
- At 360m altitude, humidity above 90% combined with 100% cloud cover likely means the crag is sitting in mist or low cloud, depositing moisture directly onto rock surfaces.
Warnings
3
- Polished slate at Buckstone How is extremely dangerous when wet — falls on greasy slab are a serious injury risk.
- Tomorrow's forecast of 36.8mm with 36.7 km/h SW winds represents severe mountain weather at 360m — avoid the hillside entirely.
- The crag may be in cloud for extended periods this week given the altitude and persistent high humidity.
Reasoning
The crag received rain this morning and early afternoon (totalling ~10.8mm today) with humidity at 91–98% and 100% cloud cover, meaning rock surfaces are currently wet and unlikely to dry.
Despite moderate wind (~15–25 km/h), 100% cloud cover, near-saturation humidity, and no solar radiation on the S/SW aspect mean there is essentially zero effective drying today.
Non-porous slate does not suffer structural damage from water, but the polished surfaces lose virtually all friction when wet, creating severe slip hazard.
Mid-summer should offer the best drying conditions, but this is an unusually wet and cool spell for August in the Lakes with temperatures 5–8°C below recent averages and persistent frontal systems.
Contributing Factors
6
10.8mm of precipitation today with multiple showers through the morning and a heavy burst at 14:00 has left all surfaces wet.
Humidity of 91–98% with 100% cloud cover prevents any meaningful evaporation or drying of rock surfaces.
A forecast 36.8mm of rain tomorrow with 98% humidity and 36.7 km/h SW winds will thoroughly drench the crag.
Strong SW winds (25–37 km/h) will aid rapid surface drying once the rain stops and humidity drops, but this benefit is currently negated by ongoing moisture.
The quarried and polished slate surfaces at Buckstone How lose friction dramatically when damp, making even lightly moist rock dangerously slippery.
The last week has seen 21.8mm of rain with only brief dry windows, and the next 5 days forecast another 77mm — no sustained drying period is available.
Recommendations
3
- Avoid Buckstone How entirely for the coming days — the forecast shows no adequate drying window until at least August 10th.
- If visiting the Lakes this week, consider indoor climbing walls as a wet-weather alternative; no outdoor slate venue will be in condition.
- Monitor conditions from August 10th onwards — a dry day with breeze following the current wet spell could see this exposed south-facing crag dry within a few hours of sunshine.
Marginal — Assess Conditions
55%
12 days ago
Light scattered showers overnight and this morning have left surfaces damp, but a dry, warming afternoon window (roughly 12:00–20:00) with dropping humidity and moderate wind should allow the exposed slate to dry; however, the preceding week of unsettled weather and 100% cloud cover this morning mean residual dampness on ledges and layered surfaces is likely. A major rain event arrives tomorrow, so today's afternoon is the last viable window for some time.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Buckstone How's layered slate ledges trap standing water after rain, and these horizontal features can remain damp even when vertical faces have dried.
- The exposed Honister Pass position and today's SE wind (~20–23 km/h) will aid surface drying through the afternoon, but the S/SW aspect receives less direct benefit from an SE wind compared to a westerly.
- The past week (July 25–Aug 2) has seen repeated small rain events totalling ~18mm with persistently high humidity (80–98%), meaning the crag has had very little opportunity to fully dry out.
- Tomorrow brings 20mm+ of heavy rain followed by several more wet days — if climbing today, the afternoon window between roughly 13:00–19:00 offers the best chance of acceptable friction on steeper ground.
Warnings
2
- Heavy rain (20mm+) arrives tomorrow — today's afternoon is the only viable window this week; do not get caught out on routes if weather arrives early.
- Polished slate is dangerously slippery with even a thin film of moisture — if any doubt remains after touch-testing, do not climb.
Reasoning
Repeated light rain over the past week with high humidity means the slate surfaces have been persistently damp; today's early showers (~1mm scattered through the morning) add fresh surface moisture that needs to evaporate.
The afternoon dry window with temperatures reaching 22–23°C, humidity dropping to ~47–51%, and 20+ km/h wind on this exposed crag should clear surface moisture from vertical and steep faces within a few hours, though sheltered ledges and layered steps will be slower to dry.
Slate is non-porous so there is no structural weakening concern; the risk is entirely about surface friction on polished quarried surfaces.
Mid-summer temperatures and long daylight hours are favourable for drying, but the current unsettled Atlantic pattern with high humidity is limiting the crag's ability to dry thoroughly between showers.
Contributing Factors
6
Multiple small rain events over the past 8 days (~18mm) with very few consecutive dry hours have kept the slate persistently damp.
Scattered light precipitation through the morning (0.2mm at 04:00, 0.2mm at 07:00, 0.1mm at 08:00) has freshly wetted the rock surface.
From ~12:00 onward, no rain is forecast with humidity dropping to 47% and temperatures reaching 22–23°C, providing a viable drying window.
Moderate SE wind of 20–23 km/h across the exposed Honister Pass position will accelerate surface evaporation through the afternoon.
Buckstone How's polished slate surfaces lose friction dramatically with even a thin film of moisture, making any residual dampness on slabs and lower-angle terrain hazardous.
Over 20mm of rain is forecast for August 4th with 94% humidity, meaning conditions will deteriorate sharply and not recover for several days.
Recommendations
3
- If climbing today, wait until mid-afternoon (14:00+) and carefully touch-test vertical faces and ledges for residual moisture before committing — steep, well-drained faces will be drier than slabs or ledged terrain.
- Avoid slab routes entirely today as polished slate requires thoroughly dry conditions for safe friction; stick to steeper ground with positive edges if conditions pass your on-site assessment.
- Do not plan any climbing from tomorrow (Aug 4) through at least Aug 8 — heavy sustained rainfall will render the crag unsafe and greasy for an extended period.
Climbing Outlook