Condition Analysis
AI-powered assessment using site data and 14-day weather history
Rothley Crag has received persistent rainfall over the past two weeks (~51mm in 28 days) with almost no consecutive dry days, and today has already seen rain with more forecast this evening. The Millstone Grit will be thoroughly saturated internally despite any brief surface drying, and the upcoming forecast offers no meaningful dry window for at least five days.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley's Millstone Grit is coarser than Fell Sandstone but remains highly porous — after this prolonged wet spell the rock will be deeply saturated and needs an extended dry window to recover.
- The SE/S aspect normally aids drying, but 100% cloud cover today and persistently high humidity (83% average over the last week) negate much of the solar benefit.
- Scattered boulders on open moorland dry at different rates — south-facing exposed blocks will dry first, but shady or north-facing sides and lower sections will hold moisture for days longer, as confirmed by condition reports.
- Open moorland at 215m means saturated ground around the crag base will wick moisture back into boulders from below, prolonging internal dampness well beyond what surface appearance suggests.
Warnings
2
- Millstone Grit loses significant compressive strength when wet — climbing on saturated rock risks permanent hold breakage and irreversible route damage.
- The rock surface may appear dry during brief sunny intervals but will remain deeply saturated internally after this prolonged wet period — do not be deceived by surface conditions.
Reasoning
With 13mm of rain in the last 7 days spread across multiple events and no consecutive dry days, the Millstone Grit will be deeply saturated well above the critical 1% threshold where significant weakening begins.
Despite partial wind exposure and a favourable SE/S aspect, persistent cloud cover, high humidity averaging 83%, and repeated re-wetting every 1–2 days have prevented any meaningful drying cycle from completing.
The cumulative ~51mm over 28 days with near-continuous re-wetting means the rock is likely at or near full saturation, posing serious risk of hold breakage and grain loosening — climbing now would cause permanent damage.
Early June should offer improving conditions, but this has been an unusually wet and cool spell with temperatures averaging only ~10.6°C over the past week, significantly below seasonal norms and insufficient to drive rapid evaporation.
Contributing Factors
7
Rain has fallen on most days over the past two weeks with 13mm in the last 7 days and 51mm over 28 days, keeping the rock in a near-continuously wet state.
There have been no consecutive dry days recently, meaning every partial drying cycle has been interrupted by fresh precipitation before the rock could recover.
Average humidity of 83% over the past week severely limits evaporative drying, and today's hourly readings show 76–98% humidity throughout.
Average temperatures of only ~10.6°C over the past week are well below seasonal norms, reducing evaporation rates significantly.
The SE/S aspect would normally help, but 100% cloud cover today and persistent overcast conditions negate most of the solar drying advantage.
Partial wind exposure with recent winds of 15–37 km/h provides some drying benefit, though this is insufficient to overcome the humidity and re-wetting pattern.
The 5-day forecast shows rain on every day (0.3–4.1mm), with no dry window long enough to allow meaningful drying of the Millstone Grit.
Recommendations
3
- Do not climb at Rothley Crag today or in the coming days — the rock is saturated and climbing would risk permanent damage to holds and routes.
- Wait for at least 48–72 hours of genuinely dry weather with low humidity before reassessing; given the prolonged saturation, even longer may be needed.
- If visiting the area, check the ground at the base of the boulders — if the soil is damp, the rock is certainly still wet internally regardless of surface appearance.
Previous Analyses
Do Not Climb
90%
2 days ago
Rothley Crag has endured a prolonged wet spell with nearly 49mm over the last 28 days and repeated rainfall events over the past two weeks, with the most recent significant rain (1.2mm) just three days ago and further light rain today. The rock is almost certainly saturated internally despite the Millstone Grit's SE/S aspect, and the forecast shows continued rain over the coming days making meaningful drying impossible.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Millstone Grit at Rothley has coarser grain than Fell Sandstone but remains highly porous — the prolonged wet spell since early June will have deeply saturated the rock, and surface-dry appearance is unreliable.
- The SE/S aspect and open moorland exposure provide above-average solar drying potential, but average temperatures of only ~10°C and humidity consistently above 80% over the past week severely limit evaporation rates.
- Scattered boulders dry at different rates — south-facing exposed boulders may appear dry first, but shaded faces and lower sections of the main buttress will retain moisture much longer, as confirmed by historic condition reports.
- The crag sits at 215m on open moorland where overnight temperatures have dropped below 6°C recently; combined with high humidity, overnight dew and condensation will re-wet any partially dried surfaces.
Warnings
2
- Millstone Grit can appear surface-dry while still critically weakened internally — do not rely on visual or touch tests alone after this prolonged wet period.
- Climbing on saturated gritstone causes permanent, irreversible damage to holds and routes; please respect the community ethic of not climbing wet porous rock.
Reasoning
With 12mm in the last 7 days, 49mm over 28 days, and rain on most days since June 1st, the Millstone Grit is almost certainly saturated well beyond the critical 1% threshold at which significant strength loss begins.
The last meaningful dry window was only June 13–14 (two days), which is insufficient to dry rock that received ~13mm on June 3rd and repeated top-ups since; today's rain from 20:00 onward resets any partial drying.
At current saturation levels, grain-to-grain friction is severely reduced and hold breakage risk is high — climbing now risks permanent damage to the gritstone holds and routes.
Despite being early summer, temperatures have been well below seasonal averages (~10°C mean vs typical 15°C+) and humidity has remained stubbornly high, creating poor drying conditions atypical for June.
Contributing Factors
6
Nearly 49mm over 28 days with rain on most days since June 1st means the rock has had no opportunity to dry out meaningfully.
Only June 13–14 were fully dry, providing just ~36 hours of drying before today's rain — far short of the 48–72+ hours needed after heavy cumulative wetting.
1.9mm forecast today (evening) plus 3.5mm tomorrow and continued rain through June 18th will prevent any drying progress.
Average humidity of 82% over the past week severely limits evaporative drying even when rain pauses.
Average temperature of only 10.4°C over the past week slows evaporation and internal drying significantly for June.
The south-facing aspect and partial wind exposure provide the best available drying conditions, but these are overwhelmed by the persistent moisture input.
Recommendations
3
- Do not climb at Rothley Crag today or in the coming days — the rock is almost certainly saturated internally and hold breakage risk is high.
- Monitor conditions after the current unsettled spell breaks; you will need at least 48–72 hours of dry, breezy weather with temperatures above 15°C before conditions may improve.
- If visiting the area, consider non-porous alternatives such as whinstone or limestone venues where wet-rock structural damage is not a concern (though friction will still be reduced).
Do Not Climb
60%
3 days ago
Despite one dry day today, Rothley Crag has experienced nearly 47mm of rain over the past 28 days with repeated wetting events — most recently 1.2mm on June 12 and a trace on June 13. With only ~1.5 truly dry days, high average humidity (81%), and cool temperatures (~10.6°C average), the rock is very likely still holding internal moisture. We recommend waiting for a longer dry spell.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley's Millstone Grit is coarser than Fell Sandstone but still highly porous — repeated soakings over recent weeks will have deeply saturated the rock, and drying behaviour may differ from finer-grained venues nearby.
- The SE/S aspect helps significantly with solar drying, but the open moorland setting at 215m means cooler temperatures and persistent humidity that slow evaporation.
- Historical condition reports confirm that even after extended dry spells, north-facing and shaded boulders at Rothley remain damp — the scattered boulder field means individual blocks dry at very different rates.
- The site has seen almost no sustained dry window since late May; the rock has been repeatedly re-wetted before any meaningful drying could occur, meaning cumulative internal saturation is likely high.
Warnings
2
- Do not climb on this porous Millstone Grit when damp — internal moisture causes significant strength loss and risks permanent hold breakage.
- The rock surface may appear dry while the interior remains saturated; surface dryness alone is not a reliable indicator after this much cumulative rain.
Reasoning
With 13.1mm in the last 7 days spread across multiple events (including 5.7mm on June 11 and 1.2mm on June 12), and only ~1.5 dry days since the last meaningful rain, the rock is very likely still saturated internally despite potentially appearing surface-dry on south-facing aspects.
Today's dry weather with moderate NW wind (19.4 km/h) and low humidity (78%) will have started surface drying on the SE/S faces, but a single day is wholly insufficient to dry Millstone Grit that has been repeatedly soaked — the 48–72+ hour guideline after heavy rain has not been met.
The cumulative 46.9mm over 28 days with frequent re-wetting means the rock has had minimal opportunity to regain strength; climbing now risks hold breakage and grain loosening on this porous gritstone.
Early June temperatures are disappointingly cool (averaging only 10.6°C over the last week), slowing drying significantly compared to typical summer conditions; freeze-thaw is not a concern but the cool, humid pattern is unfavourable for drying.
Contributing Factors
7
Nearly 47mm over 28 days with rain on at least 10 of the last 14 days means the rock has been repeatedly re-saturated with no meaningful drying window.
Only ~1.5 dry days since the last significant rain (1.2mm on June 12), far short of the 48–72 hours minimum needed after the cumulative soaking.
Average humidity of 81% over the past week severely limits evaporative drying, meaning even wind-exposed surfaces dry slowly.
Average temperature of only 10.6°C over the last week is well below summer norms and slows both evaporation and internal moisture migration.
The south-facing orientation catches good solar radiation in June, helping surface drying on exposed faces — but one day is not enough.
Partial wind exposure on open moorland aids drying; today's 19.4 km/h NW wind helps move moist air from the rock surface.
3.3mm forecast for June 15 and 7.4mm on June 16 will re-wet the rock before any meaningful drying can occur, resetting the clock.
Recommendations
3
- Wait for a sustained dry period of at least 48–72 hours after the forecast rain on June 15–16 clears before visiting.
- If visiting later in the week (June 18–19), check the ground at the crag base — if it is still damp, the rock is certainly still holding moisture internally.
- Prioritise the most exposed, south-facing boulders first and avoid any shaded or north-facing blocks, which will hold moisture far longer.
Do Not Climb
35%
4 days ago
Despite one dry day today with strong wind, the crag has received nearly 47mm of rain over the past 28 days with frequent wet spells, including 5.7mm just two days ago and 1.2mm yesterday. Only one full dry day is insufficient to dry porous Millstone Grit that has been repeatedly saturated over recent weeks.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley's Millstone Grit is coarser than Fell Sandstone but still highly porous — repeated wetting over the past month will have driven moisture deep into the rock, requiring extended drying.
- The SE/S aspect and open moorland setting help drying, but recent humidity has averaged 81% over the past week, significantly limiting evaporation rates.
- Scattered boulders dry at different rates — south-facing exposed blocks will dry fastest, while shaded or north-facing sides and lower sections will retain moisture much longer, as confirmed by historical condition reports.
- The moorland setting means the ground around the crag base will hold moisture from the prolonged wet spell, and ground-level seepage can wick upward into boulder bases.
Warnings
2
- The rock surface may appear dry while remaining dangerously saturated internally — Millstone Grit loses up to 50% of its compressive strength when wet, risking permanent hold breakage.
- The prolonged wet spell means even apparently dry boulders may have elevated internal moisture; do not be deceived by a dry-looking surface after just one windy day.
Reasoning
With 13.2mm in the last 7 days including rain on 5 of those days, and 46.8mm over 28 days, the rock is almost certainly still holding significant internal moisture despite surface drying today.
Today's strong westerly wind (35.6 km/h) and lower humidity (73%) will be helping surface drying, but only one dry day after repeated saturation is far short of the 48–72+ hours needed after heavy cumulative rainfall on porous gritstone.
Repeated wetting cycles over the past month mean internal moisture levels are likely still elevated, posing real risk of grain loosening and hold breakage on Millstone Grit.
Early June temperatures averaging only 11°C over the past week are cooler than typical for the season, slowing evaporation and extending required drying times.
Contributing Factors
6
Nearly 47mm over 28 days with rain on most of the last 10 days means the rock has been repeatedly re-saturated before it could fully dry.
Just one full dry day since the last rain (1.2mm on June 12) is far below the minimum 48-hour guideline for porous rock even after light rain.
Average humidity of 81% over the past week severely limits net evaporation from the rock surface.
Today's 35.6 km/h westerly wind is helping strip surface moisture and will accelerate superficial drying.
The south-facing aspect receives good solar radiation in June, aiding surface drying on exposed faces.
Averaging only 11°C over the past week is well below seasonal norms, reducing evaporation rates.
Recommendations
3
- Wait at least 48 hours of continuous dry weather before visiting — ideally until June 15 at the earliest, and only if no further rain falls.
- If you do visit, apply the ground-moisture test: if the soil at the base of boulders is damp, the rock is almost certainly still wet internally.
- Focus only on the most exposed, south-facing boulders if conditions look promising, and avoid any shaded, north-facing, or lower sections entirely.
Do Not Climb
90%
5 days ago
Rothley Crag has received persistent rainfall over the past two weeks (nearly 48mm in 28 days) with rain today (2.3mm) and no meaningful dry spell — the Millstone Grit will be thoroughly saturated internally despite any surface drying. With high average humidity (83%) and cool temperatures (~11°C average), the rock has had no opportunity to dry out and climbing today would risk both hold breakage and permanent route damage.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley's Millstone Grit is coarser than the local Fell Sandstone but remains highly porous — after the prolonged wet spell from late May through mid-June the rock will be deeply saturated, not just surface-damp.
- The SE/S aspect helps with solar drying in theory, but recent temperatures have been well below seasonal norms (averaging ~11°C) and humidity has been persistently high (83%), severely limiting evaporation.
- Condition reports from spring show that even after just a few days of rain, north-facing and shaded boulders at Rothley remain damp — the scattered boulder field means some blocks get less airflow and sun than the main buttress.
- The open moorland setting means the ground around the crag base will be waterlogged after weeks of rain — a useful field indicator that internal rock moisture remains high.
Warnings
2
- Climbing on saturated Millstone Grit risks permanent hold breakage and irreversible route damage — the coarse grain structure is especially vulnerable to grain loosening when wet.
- Surface-dry appearance is deceptive after prolonged wet spells — the interior can remain saturated for days even when the surface feels dry to the touch.
Reasoning
The rock has received rain on 10 of the last 13 days totalling over 30mm, with no consecutive dry days — the Millstone Grit will be saturated well beyond the critical 1% threshold where significant strength loss begins.
Today's rain (2.3mm) resets any minimal drying that may have occurred during yesterday's dry spell; the SE/S aspect and moderate wind help but cannot overcome persistent re-wetting and 83% average humidity.
With prolonged saturation, capillary cohesion between grains is severely compromised and compressive strength could be reduced by 30%+ — hold breakage risk on the coarse Millstone Grit is high.
Early June should offer good drying conditions, but this year's unseasonably cool and wet pattern has prevented the rock from entering a dry baseline, mimicking late-winter saturation levels.
Contributing Factors
6
Rain has fallen on 10 of the last 13 days accumulating over 30mm, keeping the porous Millstone Grit continuously saturated with no drying window.
Today's 2.3mm of rain ensures the surface and near-surface rock remain wet, resetting any minimal drying progress.
Average humidity of 83% over the past week severely limits evaporative drying even when rain pauses.
Average temperatures around 11°C are well below June norms, slowing evaporation and internal drying rates.
The south-facing aspect and moderate-to-strong westerly winds provide some drying potential once rain stops, but this has been overwhelmed by continuous re-wetting.
There have been zero consecutive dry days, meaning the rock has had no opportunity to begin the 48–72 hour drying window required after heavy rain on porous rock.
Recommendations
3
- Do not climb at Rothley today — the rock is saturated after weeks of persistent rain and needs a sustained dry spell of at least 48–72 hours before conditions can be reassessed.
- Monitor the forecast for a window of 2+ consecutive dry days with lower humidity before planning a visit; currently no such window is visible in the next five days.
- If visiting the area, check the ground moisture at the crag base as a proxy — if the moorland soil is squelchy or visibly damp, the grit is certainly still too wet internally.
Do Not Climb
92%
6 days ago
Rothley Crag is currently wet and unsafe to climb. Today saw over 5mm of rain on top of a prolonged wet period (nearly 45mm in the last 28 days with rain on most of the last 12 days), and the rock will be thoroughly saturated internally despite any surface drying later today.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley is Millstone Grit rather than Fell Sandstone — still porous and must not be climbed wet, but the coarser grain structure may allow slightly faster drainage than finer-grained venues.
- The SE/S aspect catches good afternoon sun and the open moorland setting provides reasonable wind exposure, which will aid drying once the rain stops.
- Condition reports confirm that even after good drying spells, north-facing and shady boulders at Rothley lag significantly behind sun-facing ones — expect uneven drying across the scattered boulders.
- At 215m on open moorland, temperatures have been running cool (averaging ~10.7°C over the last week) which slows evaporative drying considerably.
Warnings
2
- Climbing on saturated Millstone Grit risks permanent hold breakage and route damage — the rock loses 10–50% of its compressive strength when wet.
- The surface may appear dry well before the interior has dried — do not be fooled by a seemingly dry outer layer after only one dry day.
Reasoning
The rock is thoroughly saturated: 5.1mm fell today (mostly mid-morning to mid-afternoon), on top of repeated rain events totalling ~12.8mm in the last 7 days and ~44.5mm over 28 days, with no meaningful dry spell exceeding one day since late May.
Despite the SE/S aspect and moderate wind, there has been virtually no cumulative drying opportunity — rain has fallen on 8 of the last 12 days, humidity has averaged 82%, and today's heavy shower resets any partial drying that occurred.
With prolonged saturation over weeks, the Millstone Grit will have significant internal moisture well above the critical ~1% threshold, making holds vulnerable to breakage and grain loosening under load.
Early June should offer improving conditions, but this period has been unusually wet and cool; temperatures averaging ~10.7°C are below seasonal norms and slow evaporative drying.
Contributing Factors
6
5.1mm of rain fell today, predominantly between 10:00–15:00, thoroughly wetting the rock surface and replenishing internal moisture.
Nearly 45mm over 28 days with rain on most days in the last two weeks means the rock has had no opportunity to dry internally.
Average humidity of 82% over the last week severely limits evaporative drying even during rain-free hours.
Average temperatures of ~10.7°C over the past week are below seasonal norms and slow the drying process.
The SE/S facing aspect will catch good solar radiation once skies clear, aiding surface drying.
The next 5 days show minimal precipitation, dropping humidity (68–72%), and strong winds (up to 35 km/h), which should promote progressive drying.
Recommendations
3
- Do not climb today or tomorrow — the rock is saturated from today's rain and the preceding wet fortnight, and needs at least 48–72 hours of dry weather to begin recovering.
- The best window in the coming days is likely Saturday 14th June onwards for sun-facing, well-exposed boulders — but visually assess the rock and check the ground at the base is sandy-dry before committing.
- Avoid shady, north-facing, or sheltered boulders for longer — condition reports confirm these lag well behind sun-facing rock at Rothley.
Do Not Climb
92%
8 days ago
Rothley Crag has received nearly 28mm of rain over the past 7 days with further rain falling today, and the rock will be thoroughly saturated. With high humidity (83% average), cool temperatures (~11°C average), and zero consecutive dry days, there has been no meaningful drying window — climbing today or in the immediate future would risk permanent damage to this Millstone Grit venue.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley's SE/S aspect will help once a dry spell arrives, but the prolonged wet period since early June means even sun-facing boulders will need substantial drying time.
- Condition reports from spring confirm that north-facing and shady boulders at Rothley dry significantly slower than south-facing ones — expect uneven drying across the scattered boulder field.
- The open moorland setting at 215m altitude means cooler temperatures and higher ambient humidity than lowland venues, slowing drying despite reasonable wind exposure.
- Millstone Grit's coarser grain structure may allow slightly faster surface drainage than Fell Sandstone, but internal porosity still demands the same conservative drying approach.
Warnings
2
- Climbing on saturated Millstone Grit risks permanent hold breakage and route damage — the rock has lost significant compressive strength after this prolonged wet period.
- Surface rock may appear dry before the interior has dried sufficiently — do not be fooled by a dry-looking surface after only one dry day.
Reasoning
With 27.5mm in the last 7 days — including 13.4mm on June 3rd, further rain on June 4th, 6th, 8th, and today — the rock is almost certainly saturated well beyond the critical 1% threshold where significant strength loss begins.
There have been zero consecutive dry days leading into today; the brief dry day on June 5th was immediately followed by more rain, so no meaningful drying has occurred despite the SE/S aspect and partial wind exposure.
At near-full saturation the Millstone Grit will have lost 30–50% of its compressive strength, making hold breakage and grain loosening a serious risk — climbing now could cause permanent route damage.
Early June temperatures averaging only 11°C with persistent high humidity (83%) are below seasonal norms, reducing evaporative drying capacity despite the lengthening days.
Contributing Factors
6
Nearly 28mm over the past 7 days with rain on 5 of the last 7 days means the rock has had no opportunity to dry internally.
A further 4mm forecast today with showers scattered throughout the morning and a heavier burst this evening keeps the rock wet.
Average humidity of 83% over the past week severely limits evaporative drying even during any brief dry intervals.
Average temperatures around 11°C are well below seasonal norms, slowing the drying process significantly.
The south-facing aspect and partial wind exposure will aid drying once a sustained dry spell arrives, but have been insufficient to counter ongoing rainfall.
An additional 8.4mm is forecast over June 10–11, extending the wet period before a potential dry window opens on June 12.
Recommendations
3
- Do not climb at Rothley Crag today or for at least 48–72 hours after the last rain, which is currently forecast for June 11.
- Monitor conditions from June 13 onwards — if the dry spell from June 12 holds with lower humidity and warmer temperatures, south-facing boulders may begin to come into condition.
- When visiting after the dry spell, check the ground at the base of boulders: if soil is still damp, the rock is almost certainly still wet internally and should be left alone.
Do Not Climb
90%
9 days ago
Rothley Crag has received over 32mm of rain in the past 7 days, including 13.4mm on June 3rd and further rain today (4.4mm), with no meaningful dry spell for the rock to recover. The Millstone Grit will be thoroughly saturated internally despite any surface drying during brief dry windows, and the forecast shows continued rain for the next several days.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Rothley's SE/S aspect and open moorland exposure normally aid drying, but the persistent wet spell with high humidity (83% average over 7 days) has severely limited evaporative potential.
- Millstone Grit's coarser grain structure means water penetrates deeply; the cumulative 32mm over the past week will have saturated the rock well beyond the critical 1% threshold.
- Scattered boulders at this venue dry at different rates — south-facing exposed blocks will recover first, but shaded faces and lower sections of the main buttress will retain moisture far longer.
- As a National Trust managed site, responsible use is essential to maintain access — climbing on saturated gritstone risks permanent hold damage and could jeopardise the permissive access arrangement.
Warnings
2
- Climbing on saturated Millstone Grit risks permanent hold breakage and irreversible route damage — the rock may have lost 30–50% of its compressive strength.
- Surface rock may appear to dry quickly during the afternoon dry window today but the interior will remain deeply saturated — do not be deceived by a dry-looking surface.
Reasoning
With 32mm of rain over the past 7 days — including significant falls on June 1st (4.2mm), 2nd (7.2mm), 3rd (13.4mm), 4th (5.0mm), and further rain today — the rock is deeply saturated internally, well above the critical saturation levels for strength loss.
The only dry day in the past week was June 5th, which is nowhere near sufficient to dry Millstone Grit after such heavy cumulative rainfall; moderate winds have helped surface evaporation but high humidity (83% average) has severely limited net drying.
At current saturation levels the rock will have lost 30%+ of its compressive strength, creating serious risk of hold breakage and irreversible erosion damage to this Millstone Grit venue.
Early June temperatures (12–14°C) are moderate and would normally support drying, but the persistent wet pattern with high humidity has negated the seasonal advantage.
Contributing Factors
6
Over 32mm in the last 7 days with multiple significant rain events (13.4mm on June 3rd alone) has deeply saturated the porous Millstone Grit.
4.4mm fell today with a further 4.0mm and 4.2mm forecast for June 9th and 10th respectively, preventing any meaningful drying window.
There has been no uninterrupted dry spell to allow the rock to begin drying from the sustained wet period.
Average humidity of 83% over the past week severely limits evaporative drying even when rain pauses.
Winds of 18–31 km/h provide some surface drying assistance, though insufficient to overcome the moisture load and high humidity.
The south-facing aspect catches good June sun when available, but overcast skies (100% cloud cover much of today) have limited this benefit.
Recommendations
3
- Do not climb at Rothley today — the rock is saturated after 32mm in the past week and further rain today; wait for a sustained dry spell of at least 48–72 hours.
- Monitor the forecast from June 11th onwards — if the light showers (0.3–0.9mm) cease and a genuine dry window opens, the SE/S facing exposed boulders may begin to come into condition by mid-to-late week.
- When you do visit, test conditions by checking the ground at the base of boulders: if the soil is damp, the rock is still wet internally regardless of surface appearance.
Do Not Climb
92%
10 days ago
Rothley Crag has received over 30mm of rain in the past week across multiple days, with the most recent precipitation today (0.3mm) and significant falls on June 3rd (13.4mm) and June 4th (5.0mm). With persistently high humidity averaging 86%, cool temperatures around 12°C, and zero consecutive dry days, the Millstone Grit will be saturated internally despite any surface drying.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Millstone Grit's coarser grain structure and substantial feldspar content may trap moisture differently from Fell Sandstone — the porous matrix still requires extended drying, and internal saturation is likely after this prolonged wet spell.
- The SE/S aspect will help once a dry spell establishes, but recent high humidity (86–91%) and cool temperatures have severely limited evaporative drying potential.
- Scattered boulders across the moorland will have variable drying rates — south-facing exposed faces of the main buttress will dry first, while shaded sides and lower sections of boulders sitting in moorland grass will hold moisture much longer.
- Open moorland setting at 215m means cooler temperatures than lowland venues, and the ground itself acts as a moisture reservoir — if the heather and grass at the base are wet, the rock almost certainly is too.
Warnings
2
- Climbing on saturated Millstone Grit risks permanent hold breakage and irreversible route damage — the rock may look surface-dry while retaining dangerous levels of internal moisture.
- The surface-dry-but-internally-wet scenario is especially dangerous after prolonged wet spells like this — visual inspection alone is not sufficient to confirm safety.
Reasoning
With 32mm of rain over the past 7 days spread across multiple events (including 13.4mm on June 3rd and further rain today), the Millstone Grit will be thoroughly saturated internally, well above the critical ~1% water saturation threshold where significant weakening begins.
Zero consecutive dry days and average humidity of 86% mean there has been virtually no effective drying period; even the SE/S aspect and moderate wind exposure cannot compensate for the near-continuous moisture input and humid conditions.
At current saturation levels the rock faces an estimated 10–50% compressive strength reduction, making hold breakage a real risk — climbing now would cause permanent damage to this Millstone Grit venue.
Early June should offer improving conditions, but this spell of unsettled, cool, and humid weather is behaving more like a spring relapse; temperatures of 12–14°C are below seasonal norms and slow drying considerably.
Contributing Factors
6
Over 32mm in the last 7 days across multiple rain events, with the heaviest single day being 13.4mm on June 3rd, ensures deep saturation of the porous Millstone Grit.
There has been no uninterrupted dry period since the heavy rain began — today itself recorded 0.3mm, preventing any meaningful drying window.
Average humidity of 86% over the past week means very low evaporative potential, keeping the rock damp even between rain events.
Temperatures averaging only 12°C over the past week significantly slow the evaporation rate compared to typical early summer conditions.
The south-facing aspect and partial wind exposure will aid drying once a sustained dry spell arrives, but cannot overcome continuous moisture input.
The next 5 days forecast a further 21mm+ of precipitation, meaning no meaningful drying window is expected until at least June 13th.
Recommendations
3
- Do not visit Rothley Crag until at least 48–72 hours of continuous dry weather with humidity below 75% — the earliest realistic window appears to be June 14th or later.
- Check the ground conditions at the crag base on arrival: if the moorland grass and heather are damp, the rock is almost certainly still wet internally regardless of surface appearance.
- Consider non-porous alternatives (e.g. whinstone or limestone venues) if you need to climb this week — porous gritstone is not an option in these conditions.
Do Not Climb
92%
11 days ago
Rothley Crag has received over 35mm of rain in the last week, including 13.4mm on June 3rd, 5mm on June 4th, and 5.2mm today (June 6th), with only a single dry day intervening. The rock will be thoroughly saturated internally despite any surface drying, and continued unsettled weather means no adequate drying window is available.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
- Millstone Grit at Rothley has coarser grain structure than Fell Sandstone but remains highly porous — internal saturation after this prolonged wet spell will be significant and slow to resolve.
- The SE/S aspect and open moorland setting will aid drying once a sustained dry spell arrives, but with humidity averaging 86% over the past week, solar evaporation has been severely limited.
- Condition reports from spring 2026 confirm that even after shorter wet spells, north-facing and shady boulders at Rothley remain damp for days — the scattered boulder field means individual blocks dry at very different rates.
- At 215m altitude, temperatures have been notably cool (averaging only 12°C this week), further slowing the evaporative drying process.
Warnings
2
- Climbing on saturated Millstone Grit risks permanent hold breakage and irreversible route damage — the rock may look drier than it is on the surface.
- The forecast shows no adequate drying window in the next 5 days; do not rely on brief dry spells between showers.
Reasoning
The rock is almost certainly saturated internally after 35mm of rain over the past week with persistently high humidity (86% average) and only one intervening dry day, meaning pore spaces will be near full capacity.
Despite partial wind exposure and a favourable SE/S aspect, the single dry day on June 5th with moderate wind but cool temperatures (14°C max) is wholly insufficient to dry Millstone Grit after this volume of rain — a minimum of 48–72 hours of dry, warm, breezy weather would be needed.
With the rock likely at or above 60% pore saturation, compressive strength will be significantly reduced (potentially 30%+ loss), creating serious risk of hold breakage and permanent route damage on this porous gritstone.
Early June should offer reasonable drying conditions, but this spell of cool, humid, unsettled weather is behaving more like late autumn — sustained warm sunshine is needed before conditions improve.
Contributing Factors
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Over 35mm in the past 7 days across multiple events (including 13.4mm on June 3rd and 5.2mm today) has kept the rock repeatedly wetted with no chance to dry.
Average humidity of 86% over the past week severely limits evaporative drying, meaning even wind and sun have minimal effect.
Average temperatures of only 12°C over the past week are well below optimal for driving moisture from porous rock.
5.2mm of rain today at 92% humidity means the rock has been freshly wetted with zero consecutive dry days.
The forecast shows further rain on 4 of the next 5 days (totalling ~18mm), preventing any meaningful drying period from developing.
The SE/S facing aspect will help once a dry spell arrives, but cannot compensate for ongoing rain and near-saturated air.
Partial wind exposure on open moorland provides some drying benefit, and strong winds are forecast (up to 31 km/h), but this is insufficient without dry weather.
Recommendations
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- Do not climb at Rothley Crag until at least 48–72 hours of continuous dry weather with low humidity occurs — currently no such window is in the forecast.
- Monitor conditions closely from June 12th onward, which is the first forecast dry day, but even then a single dry day after this prolonged wet spell will not be sufficient.
- If visiting the area, consider non-porous rock alternatives (whinstone or limestone venues) where wet-rock structural damage is not a concern, though friction will still be reduced.
Climbing Outlook