Fan Hir Weather Forecast – 760m, Bannau Brycheiniog (Brecon Beacons)

Sunday 20 September 2026Confidence: Medium

Overall hill weather83/100Good

Wind5-25 mph northwesterly Gusts20-30 mph Feels like2 to 6°C PrecipitationLittle or none Cloud-free summit estimate80% Cloud base through day600-1,600 m Freezing levelAbove summit DaylightSunrise 06:56 · Sunset 19:18 · 12.4 hours daylight

The day on the hill

Little rain and limited summit cloud on Fan Hir: summit wind broadly 5-25 mph, with gusts 20-30 mph at times (a moderate breeze).

Cloud & views

Cloud layers are possible from about 600-900 m, with the summit likely to be in cloud. Cloud-height uncertainty could put the summit in or out of cloud.

Clear spells may be difficult to time.

Rain & temperature

Little or no rain is forecast.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Exposed tops may feel chilly in the wind.

A windproof layer will help, with an extra warm layer for stops. Cloud-height uncertainty could put the summit in or out of cloud, even where forecasts agree on the wider cloud cover.

Cloud-free timing: Cloudy early, clearing later.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 7.6 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early: 0 h
Midday: 4 h
Later: 2.1 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Good Summit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.

76/100

Afternoon · 12:00–17:00 Excellent Summit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.

90/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaConditions look exceptional, but forecast uncertainty caps the grade at 97/100. 97/100Excellent · 600 m View detailsHide details

Night beginning Sunday 20 September 2026

Full overnight outlook

Open-hillside camping looks very good overall around 600 m (97/100). Light winds are expected on open ground, though local shelter and exposure still matter. Little overnight rain is forecast. Forecast models strongly support a good night, but not at the exceptional-certainty threshold. The grade is capped at 97/100.

Overnight rain0.0 mm Open ground · 600 m8 mph · gusts 16 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about 6°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc: 70%
Moonrise: 17:06 BST
Moonset: 00:21 next morning BST

Clear spells may allow a view of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 20 Sep, 17:00 BST to 21 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m97/100 · very good

Wind / gust: 6 mph / 13 mph
Typical / low: 11.0°C / 9.7°C · a brief spell
In cloud: 0% of modelled night
Condensation: Low

600 m97/100 · very good

Wind / gust: 8 mph / 16 mph
Typical / low: 11.0°C / 9.7°C · a brief spell
In cloud: 0% of modelled night
Condensation: Low

Warmth planning: As a broad starting point, consider a 3-season bag with an ISO/EN comfort rating at or below about 6°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaRock is likely to be mostly dry, but check for local dampness. Excellent91/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look good (91/100). Rock is likely to be mostly dry, though seepage and shaded holds are not resolved. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully.

Rock surfaceProbably dryPeak gust24 mphRain0.0 mm

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Sunday 20 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

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Monday 21 September 2026Confidence: Medium

Overall hill weather76/100Good

Wind5-15 mph northwesterly Gusts10-20 mph Feels like6 to 10°C PrecipitationLittle or none Cloud-free summit estimate55% Cloud base through day700-1,400 m Freezing levelAbove summit DaylightSunrise 06:58 · Sunset 19:16 · 12.3 hours daylight

The day on the hill

Frequent summit cloud on Fan Hir: summit wind broadly 5-15 mph, with gusts 10-20 mph at times (light winds).

Cloud & views

Cloud base around 1100–1400 m in the morning, lowering to 700–1000 m around midday. Summit cloud is likely to be limited early, becoming more extensive around midday.

Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.

Sunny spells are possible away from summit cloud, but may not reach the top while it is in cloud.

Rain & temperature

Little or no rain is forecast.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Cloud-height uncertainty could put the summit in or out of cloud, even where forecasts agree on the wider cloud cover.

Cloud-free timing: Around 85% early, falling to around 40% later.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 7.7 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early: 2.6 h
Midday: 3.4 h
Later: 0.8 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Good Summit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground. Summit cloud becomes more persistent later.

80/100

Afternoon · 12:00–17:00 Good Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.

72/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaCondensation risk is high near 300 and 600 m. 64/100Mixed · 600 m View detailsHide details

Night beginning Monday 21 September 2026

Full overnight outlook

Open-hillside camping looks reasonable overall around 600 m (64/100). Light winds are expected on open ground, though local shelter and exposure still matter. Little overnight rain is forecast. Condensation risk is high near 300 and 600 m, so a wet pack-up is possible. Ventilation will matter.

Overnight rain0.0 mm Open ground · 600 m8 mph · gusts 12 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 10°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc: 78%
Moonrise: 17:32 BST
Moonset: 01:36 next morning BST

Views of the Moon may come and go through cloud breaks. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 21 Sep, 17:00 BST to 22 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m64/100 · reasonable

Wind / gust: 6 mph / 11 mph
Typical / low: 13.2°C / 12.8°C
In cloud: 0% of modelled night
Condensation: High

600 m64/100 · reasonable

Wind / gust: 8 mph / 12 mph
Typical / low: 13.2°C / 12.8°C
In cloud: 0% of modelled night
Condensation: High

Warmth planning: As a broad starting point, consider a 2-season bag with an ISO/EN comfort rating at or below about 10°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaRock may be damp or still drying. Mixed66/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look fair (66/100). Some rock may still be damp or drying, especially on polished slabs and vegetated sections. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully. Cloud may also make route-finding and retreat harder.

Rock surfaceDamp or dryingPeak gust16 mphRain0.0 mm

Main factorsdamp or incompletely dried rock possiblemuch of the route may be in cloud

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Monday 21 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

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Tuesday 22 September 2026Confidence: Medium

Overall hill weather70/100Good

Wind0-10 mph southwesterly Gusts5-15 mph Feels like10 to 14°C PrecipitationLittle or none Cloud-free summit estimate40% Cloud base through day600-1,200 m Freezing levelAbove summit DaylightSunrise 07:00 · Sunset 19:14 · 12.2 hours daylight

The day on the hill

Frequent summit cloud on Fan Hir: summit wind broadly 0-10 mph, with gusts 5-15 mph at times (light winds).

Cloud & views

Cloud base around 900–1200 m in the morning, lowering to 600–900 m around midday. Summit cloud is likely, but brief clear spells remain possible if the cloud sits higher than expected.

Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.

Any sunshine may be confined to lower ground or breaks away from the summit.

Rain & temperature

Little or no rain is forecast.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Cloud-height uncertainty could put the summit in or out of cloud, even where forecasts agree on the wider cloud cover.

Cloud-free timing: Around 55% early, falling to around 40% later.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 2 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 0 h
Midday: 1.6 h
Later: Less than 1 hour

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Good Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground. Summit cloud becomes more persistent later.

73/100

Afternoon · 12:00–17:00 Mixed Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground.

66/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA broadly very good night on a well-chosen pitch. 92/100Excellent · 600 m View detailsHide details

Night beginning Tuesday 22 September 2026

Full overnight outlook

Open-hillside camping looks very good overall around 600 m (92/100). Light winds are expected on open ground, though local shelter and exposure still matter. Little overnight rain is forecast. Some condensation is possible overnight.

Overnight rain0.0 mm Open ground · 600 m5 mph · gusts 11 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 8°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc: 86%
Moonrise: 17:51 BST
Moonset: 02:52 next morning BST

Views of the Moon may come and go through cloud breaks. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 22 Sep, 17:00 BST to 23 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m92/100 · very good

Wind / gust: 4 mph / 10 mph
Typical / low: 13.4°C / 11.5°C
In cloud: 0% of modelled night
Condensation: Moderate

600 m92/100 · very good

Wind / gust: 5 mph / 11 mph
Typical / low: 13.4°C / 11.5°C
In cloud: 0% of modelled night
Condensation: Moderate

Warmth planning: As a broad starting point, consider a 2-season bag with an ISO/EN comfort rating at or below about 8°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaCloud may complicate route-finding and retreat. Good80/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look good (80/100). Rock is likely to be mostly dry, though seepage and shaded holds are not resolved. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully. Cloud may also make route-finding and retreat harder.

Rock surfaceProbably dryPeak gust9 mphRain0.1 mm

Main concernmuch of the route may be in cloud

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Tuesday 22 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

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Wednesday 23 September 2026Confidence: Medium

Overall hill weather48/100Poor

Wind10-25 mph northwesterly Gusts25-35 mph Feels like2 to 6°C PrecipitationAround 2-5 mm Cloud-free summit estimate60% Cloud base through day600-900 m Freezing levelAbove summit DaylightSunrise 07:01 · Sunset 19:11 · 12.2 hours daylight

The day on the hill

A wet day on Fan Hir: summit wind broadly 10-25 mph, with gusts 25-35 mph at times (a fresh breeze).

Things to watch

Thunderstorms are possible from the morning into the afternoon. Avoid committing to exposed ridges if storms begin to build.

If a thunderstorm develops, sudden gusts and heavy rain can change conditions quickly. Visibility may drop briefly in showers.

Cloud & views

Cloud base mostly around 600–900 m through daylight. The top is likely to drift in and out of cloud, with the best chance of a view from late afternoon into the evening.

Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.

Sunny spells are possible away from summit cloud, but may not reach the top while it is in cloud. Drizzle is forecast for much of the day, with some passing showers too.

The forecast total is around 2-5 mm, but local amounts will vary. Forecast models differ on summit wind strength: around 13-28 mph at walker height, with gusts 18-40 mph.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Exposed tops may feel chilly in the wind.

A windproof layer will help, with an extra warm layer for stops. If clothing gets wet, you can cool more quickly.

Keep a dry warm layer protected. Thunderstorm timing is inherently uncertain and may shift by several hours.

Cloud-free timing: Around 35% early, improving to around 95% later.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 6 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early: 0 h
Midday: 3 h
Later: 2 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Poor Summit winds around 5-15 mph. Gusts around 15-25 mph are possible on exposed ground. Rain is forecast during this period.

47/100

Afternoon · 12:00–17:00 Poor Summit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later. Rain is forecast during this period.

49/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA broadly promising night on a well-chosen pitch. 87/100Excellent · 600 m View detailsHide details

Night beginning Wednesday 23 September 2026

Full overnight outlook

Open-hillside camping looks promising overall around 600 m (87/100). It may be breezy on open ground, with gusts near 25 mph. Wind direction may change substantially during the night. Shelter that works at dusk may be less effective later. Little overnight rain is forecast.

Overnight rain0.0 mm Open ground · 600 m12 mph · gusts 25 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about 6°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc: 92%
Moonrise: 18:06 BST
Moonset: 04:09 next morning BST

Views of the Moon may come and go through cloud breaks. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 23 Sep, 17:00 BST to 24 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m92/100 · very good

Wind / gust: 10 mph / 21 mph
Typical / low: 8.8°C / 8.2°C · much of the night
In cloud: 0% of modelled night
Condensation: Low

600 m87/100 · promising

Wind / gust: 12 mph / 25 mph
Typical / low: 8.8°C / 8.2°C · much of the night
In cloud: 0% of modelled night
Condensation: Low

Warmth planning: As a broad starting point, consider a 3-season bag with an ISO/EN comfort rating at or below about 6°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaModerate thunderstorm risk. Avoid exposed rock if storms develop. Wet rock is likely. Poor13/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look very poor (13/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully. Cloud may also make route-finding and retreat harder. Moderate thunderstorm risk, broadly from the morning into the afternoon. Avoid committing to exposed ground if storms develop.

Rock surfaceWet rock likelyPeak gust26 mphRain2.4 mm

Main factorsmoderate thunderstorm risk on exposed groundwet rock likelymuch of the route may be in cloud

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Wednesday 23 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Thursday 24 September 2026Confidence: High

Overall hill weather82/100Good

Wind10-25 mph southerly Gusts20-30 mph Feels like-2 to 2°C PrecipitationLittle or none Cloud-free summit estimate95% Freezing levelAbove summit DaylightSunrise 07:03 · Sunset 19:09 · 12.1 hours daylight

The day on the hill

Little rain and limited summit cloud on Fan Hir: summit wind broadly 10-25 mph, with gusts 20-30 mph at times (a moderate breeze).

Cloud & views

Cloud base around 1100–1400 m in the morning, then around 1400–1700 m around midday and 1200–1500 m by late afternoon. The summit is likely to stay mostly clear.

Rain & temperature

Little or no rain is forecast. Cold on exposed tops: air temperature broadly 2 to 6°C, feeling around -2 to 2°C in the wind.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Keep windproof and warm layers readily available.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 10.8 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early: 1.8 h
Midday: 4 h
Later: 3 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Good Summit winds around 5-20 mph. Gusts around 20-30 mph are possible on exposed ground.

83/100

Afternoon · 12:00–17:00 Good Summit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground.

80/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaCondensation risk is high near 300 and 600 m. 59/100Mixed · 600 m View detailsHide details

Night beginning Thursday 24 September 2026

Full overnight outlook

Open-hillside camping looks mixed overall around 600 m (59/100). It may be breezy on open ground, with gusts near 30 mph. Peak gusts range from about 25 mph at 300 m to 30 mph at 600 m. A little rain may coincide with pitching or packing up. Pitches near 600 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 300 and 600 m. Ventilation will matter.

Overnight rain0.6 mm Open ground · 600 m16 mph · gusts 29 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 8°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc: 97%
Moonrise: 18:18 BST
Moonset: 05:27 next morning BST

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 24 Sep, 17:00 BST to 25 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m64/100 · reasonable

Wind / gust: 14 mph / 24 mph
Typical / low: 11.5°C / 10.9°C
In cloud: 0% of modelled night
Condensation: High

600 m59/100 · mixed

Wind / gust: 16 mph / 29 mph
Typical / low: 11.5°C / 10.9°C
In cloud: 27% of modelled night
Condensation: High

Warmth planning: As a broad starting point, consider a 2-season bag with an ISO/EN comfort rating at or below about 8°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaRock may be damp or still drying. Good70/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look fair (70/100). Some rock may still be damp or drying, especially on polished slabs and vegetated sections. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully.

Rock surfaceDamp or dryingPeak gust25 mphRain0.0 mm

Main concerndamp or incompletely dried rock possible

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Thursday 24 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Friday 25 September 2026Confidence: Medium

Overall hill weather58/100Mixed

Wind10-25 mph westerly Gusts20-30 mph Feels like4 to 8°C PrecipitationAround 2-5 mm Cloud-free summit estimate30% Cloud base through day600-900 m Freezing levelAbove summit DaylightSunrise 07:05 · Sunset 19:07 · 12.0 hours daylight

The day on the hill

A wet day with extensive summit cloud on Fan Hir: summit wind broadly 10-25 mph, with gusts 20-30 mph at times (a moderate breeze).

Cloud & views

Cloud base mostly around 600–900 m through daylight. Summit cloud is likely, but brief clear spells remain possible if the cloud sits higher than expected.

Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.

Cloud may hang lower on western slopes and lift somewhat on the eastern side, but local terrain can differ. Any sunshine may be confined to lower ground or breaks away from the summit.

Drizzle is forecast for much of the day. The forecast total is around 2-5 mm, but local amounts will vary.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Rain timing may shift by several hours, which could change how much of the main walking period stays dry.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 2.8 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 0 h
Midday: 2.1 h
Later: 0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Mixed Summit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Rain is forecast during this period. Rain is possible during the main walking period, but its timing may shift by several hours.

55/100

Afternoon · 12:00–17:00 Mixed Summit winds around 5-15 mph. Gusts around 15-25 mph are possible on exposed ground. Rain is forecast during this period. Rain is possible during the main walking period, but its timing may shift by several hours.

60/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA broadly promising night on a well-chosen pitch. 85/100Excellent · 600 m View detailsHide details

Night beginning Friday 25 September 2026

Full overnight outlook

Open-hillside camping looks promising overall around 600 m (85/100). Light winds are expected on open ground, though local shelter and exposure still matter. A little rain may coincide with pitching or packing up. Some condensation is possible overnight.

Overnight rain0.9 mm Open ground · 600 m9 mph · gusts 15 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 4°C or lower

Moon overnight

Near-full moon

Illuminated disc: 99%
Moonrise: 18:30 BST
Moonset: 06:46 next morning BST

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 25 Sep, 17:00 BST to 26 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m85/100 · promising

Wind / gust: 7 mph / 13 mph
Typical / low: 8.1°C / 7.5°C · much of the night
In cloud: 0% of modelled night
Condensation: Moderate

600 m85/100 · promising

Wind / gust: 9 mph / 15 mph
Typical / low: 8.1°C / 7.5°C · much of the night
In cloud: 0% of modelled night
Condensation: Moderate

Warmth planning: As a broad starting point, consider a 3-season bag with an ISO/EN comfort rating at or below about 4°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Poor22/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look poor (22/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully. Cloud may also make route-finding and retreat harder.

Rock surfaceWet rock likelyPeak gust25 mphRain2.1 mm

Main factorswet rock likelymuch of the route may be in cloud

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Friday 25 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Saturday 26 September 2026Confidence: Unavailable

Overall hill weather64/100Mixed

Wind0-15 mph southerly Gusts5-15 mph Feels like2 to 6°C PrecipitationLittle or none Cloud-free summit estimate30% Cloud base through day500-800 m Freezing levelAbove summit DaylightSunrise 07:06 · Sunset 19:04 · 12.0 hours daylight

The day on the hill

Frequent summit cloud on Fan Hir: summit wind broadly 0-15 mph, with gusts 5-15 mph at times (light winds).

Cloud & views

Cloud base mostly around 500–800 m through daylight. Summit cloud is likely, but brief clear spells remain possible if the cloud sits higher than expected.

Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.

Any sunshine may be confined to lower ground or breaks away from the summit.

Rain & temperature

Little or no rain is forecast. Forecast models disagree markedly on summit wind strength.

Check again nearer the time.

Forecast confidence

Overall confidence is unavailable: insufficient comparable wind, rain guidance.

Cloud-free timing: Around 35% early, falling to around 25% later.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 11 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 2 h
Midday: 4 h
Later: 3 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Mixed Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground.

64/100

Afternoon · 12:00–17:00 Mixed Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground.

64/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaGusts near 35 mph make meaningful shelter important. 39/100Poor · 600 m View detailsHide details

Night beginning Saturday 26 September 2026

Full overnight outlook

Open-hillside camping looks poor overall around 600 m (39/100). A lower pitch near 300 m looks more comfortable. Conditions are less suitable by 600 m. Open-ground gusts may reach about 35 mph. Seek meaningful shelter. Peak gusts range from about 30 mph at 300 m to 35 mph at 600 m. Around 4.9 mm is forecast, including rain around pack-up. Pitches near 600 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 300 and 600 m. Ventilation will matter.

Overnight rain4.9 mm Open ground · 600 m15 mph · gusts 36 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 6°C or lower

Moon overnight

Near-full moon

Illuminated disc: 100%
Moonrise: 18:41 BST
Moonset: Outside this window

Cloud at the reference camping height may hide the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 26 Sep, 17:00 BST to 27 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m59/100 · mixed

Wind / gust: 12 mph / 30 mph
Typical / low: 10.4°C / 9.0°C · several hours
In cloud: 0% of modelled night
Condensation: High

600 m39/100 · poor

Wind / gust: 15 mph / 36 mph
Typical / low: 10.2°C / 9.0°C · several hours
In cloud: 60% of modelled night
Condensation: High

Warmth planning: As a broad starting point, consider a 3-season bag with an ISO/EN comfort rating at or below about 6°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaRock may be damp or still drying. Mixed64/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look fair (64/100). Some rock may still be damp or drying, especially on polished slabs and vegetated sections. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully. Cloud may also make route-finding and retreat harder.

Rock surfaceDamp or dryingPeak gust11 mphRain0.0 mm

Main factorsdamp or incompletely dried rock possiblemuch of the route may be in cloud

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Saturday 26 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Sunday 27 September 2026Confidence: Unavailable

Overall hill weather49/100Poor

Wind20-30 mph southwesterly Gusts30-40 mph Feels like4 to 8°C PrecipitationAround 5-10 mm Cloud-free summit estimate55% Cloud base through day700-1,000 m Freezing levelAbove summit DaylightSunrise 07:08 · Sunset 19:02 · 11.9 hours daylight

The day on the hill

A wet day on Fan Hir: summit wind broadly 20-30 mph, with gusts 30-40 mph at times (strong winds). Visibility may drop briefly in showers.

Wind & exposure

Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops.

Cloud & views

Cloud base mostly around 700–1000 m through daylight. The summit is likely to stay mostly clear.

Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.

Cloud may hang lower on southwestern slopes and lift somewhat on the northeastern side, but local terrain can differ. Drizzle is forecast for much of the day, with some passing showers too.

The forecast total is around 5-10 mm, but local amounts will vary. Forecast models differ on summit wind strength.

Treat the wind figures as a guide.

Forecast confidence

Cloud height remains uncertain, especially where it is close to summit level. Buffeting may affect balance on exposed ground, particularly near ridges and edges.

Overall confidence is unavailable: insufficient comparable wind, rain guidance.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 6 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early: 0 h
Midday: 2.1 h
Later: 2.9 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Poor Summit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.

39/100

Afternoon · 12:00–17:00 Mixed Summit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Rain is forecast during this period.

59/100

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaAbout 2.1 mm is forecast, with rain liable to affect both pitching and packing up. 64/100Mixed · 600 m View detailsHide details

Night beginning Sunday 27 September 2026

Full overnight outlook

Open-hillside camping looks reasonable overall around 600 m (64/100). It may be breezy on open ground, with gusts near 25 mph. Around 2.1 mm is forecast, with rain liable to affect both pitching and packing up. Condensation risk is high near 300 and 600 m, so a wet pack-up is possible. Ventilation will matter.

Overnight rain2.1 mm Open ground · 600 m16 mph · gusts 24 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 6°C or lower

Moon overnight

Waning gibbous moon

Illuminated disc: 98%
Moonrise: 18:54 BST
Moonset: Outside this window

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 27 Sep, 17:00 BST to 28 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m64/100 · reasonable

Wind / gust: 14 mph / 20 mph
Typical / low: 9.7°C / 9.6°C · much of the night
In cloud: 0% of modelled night
Condensation: High

600 m64/100 · reasonable

Wind / gust: 16 mph / 24 mph
Typical / low: 9.7°C / 9.6°C · much of the night
In cloud: 0% of modelled night
Condensation: High

Warmth planning: As a broad starting point, consider a 3-season bag with an ISO/EN comfort rating at or below about 6°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 35 mph may affect balance on exposed rock. Poor24/100 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Conditions for exposed scrambling look poor (24/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Sandstone (Lower Plateau Beds Member). Usually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully. Gusts may reach about 35 mph. Crosswinds can make exposed ridges substantially more serious.

Rock surfaceWet rock likelyPeak gust37 mphRain4.9 mm

Main factorsgusts around 35 mphwet rock likely

Mapped summit rock Sandstone Lower Plateau Beds Member

Origin: Sedimentary
Rock family: Sandstone or gritstone
Mapping: BGS Geology 50K · 1:50,000
Rock-response profile: High confidence

View the summit BGS record

Often grippy when dry, but wet sandstone can lose strength and may be damaged by climbing. Avoid it while saturated and allow shaded walls, pockets and seepage lines time to dry. Summit-point bedrock mapping; the actual route may cross different rock, superficial deposits, polish, lichen or seepage.

Generic exposed scrambling terrain; mapped summit-point bedrock is included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Fan Hir on Sunday 27 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Fan Hir weather forecast.

Choose your hill day.

The day on the hill

Cloud & views

Rain & temperature

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Cloud & views

Rain & temperature

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Cloud & views

Rain & temperature

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Things to watch

Cloud & views

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Cloud & views

Rain & temperature

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Cloud & views

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Cloud & views

Rain & temperature

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

The day on the hill

Wind & exposure

Cloud & views

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

After dark: aurora and stargazing

Weather around Fan Hir.

A forecast is part of the decision.