632 m summit in Bannau Brycheiniog (Brecon Beacons). 8 forecast days covering wind, cloud, rain and temperature, updated 4 November 2026 at 16:25 UTC.
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Confidence: High
Overall hill weather60Mixed
Summit wind · 08:00-17:0020-35 mph easterlySummit gusts · 08:00-17:0040-50 mphFeels like-4 to 0°CPrecipitationUp to around 2 mmCloud-free summit estimate90%Cloud base through day600-1,100 mFreezing levelAbove summitDaylightSunrise 07:13 · Sunset 16:41 · 9.5 hours daylight
The day on the hill
A mixed day on Fan Llia, with a blustery wind.
Wind
On the summit expect an easterly wind of 20–35 mph for most of the day, with gusts of 40–50 mph at the windiest. Lower down on the open hillside it will be more like 5–15 mph. Gusts like that are strong enough to make walking into it hard work, with buffeting on ridges and edges.
Cloud and visibility
The tops are likely to stay mostly clear of cloud, though brief patches cannot be ruled out. The air should be clear, so expect far-reaching views as long as the tops stay clear.
Rain and ground
Spells of drizzle, mostly around midday.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like -4 to 0°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
Sunset is around 4:40pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
There is some disagreement between forecast models on wind strength. Things could still change through the day, so keep an eye on the sky.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 0 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.
Morning · 08:00–12:00
MixedSummit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges.
64
Afternoon · 12:00–17:00
MixedSummit winds around 25-35 mph. Gusts around 40-50 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges. Rain is forecast during this period.
55
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA poor night to camp on open ground: gusts of about 40 mph.39Poor · 600 mView detailsHide details
Night beginning Wednesday 4 November 2026
Full overnight outlook
A poor night to camp on open ground. Gusts reach about 40 mph on open ground, which makes for a noisy, testing night even in a good tent. Look for shelter from the east. Expect some light rain, with rain while you pitch and still falling when you pack up. The air is damp at every height we checked (300-600 m), so expect heavy condensation. Leave the vents open. A cold night, down to about 3°C around 300 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 4 Nov, 17:00 GMT to 5 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m57 · mixed
Wind / gust
19 mph / 32 mph
Typical / low
3.6°C / 2.8°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m39 · poor
Wind / gust
23 mph / 38 mph
Typical / low
3.6°C / 2.8°C · much of the night
In cloud
0% of modelled night
Condensation
High
Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling: gusts of 40–50 mph.Poor19View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Very poor conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Gusts of 40–50 mph could throw you off balance on exposed moves and ridges. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceWet rock likelyPeak gust40-50 mphRain0.4 mm
Main factorsgusts of 40–50 mphwet rock likely
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 darkBetaMostly cloudy, so little chance of seeing the stars.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-04. All times are UK local time.
Aurora is unlikely on this night
A noticeable aurora display is unlikely here. Any glow may be faint or camera-only. Activity peaks around Kp 3.0 (on a 0 to 9 scale).
Activity can change at short notice. Check again on the night.
Stargazing
Poor sky conditions during the best available spell: 5 Nov, 02:00 GMT to 03:00 GMT.
Mostly cloudy, so little chance of seeing the stars.
Moon-free dark sky: 4 Nov, 18:35 GMT to 5 Nov, 02:55 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
4 Nov, 18:35 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
4 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
4 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
4 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
4 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
4 Nov, 23:00 GMT to 5 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 05:00 GMT to 05:20 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Moon, darkness and meteor showers
Crescent moon, about 18% illuminated.
Moonrise around 5 Nov, 02:55 GMT.
Full darkness: 4 Nov, 18:35 GMT to 5 Nov, 05:20 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Orionids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Wednesday 4 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:0010-25 mph easterlySummit gusts · 08:00-17:0025-35 mphFeels like-6 to -2°CPrecipitationUp to around 2 mmCloud-free summit estimate90%Cloud base through day700-1,000 mFreezing levelAbove summitDaylightSunrise 07:15 · Sunset 16:39 · 9.4 hours daylight
The day on the hill
A good day on Fan Llia: breezy, with clear tops for most of the day.
Wind
On the summit expect an easterly wind of 10–25 mph for most of the day, with gusts of 25–35 mph at the windiest. Lower down on the open hillside the wind will be light, under 10 mph. Gusts like that will be noticeable on ridges and open tops, and you will chill quickly when you stop.
Cloud and visibility
The tops are likely to stay mostly clear of cloud, though brief patches cannot be ruled out.
Rain and ground
Drizzle at first, clearing by midday.
Warmth and kit
On the tops it will be around 0 to 4°C, feeling like -6 to -2°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
Sunset is around 4:40pm, so allow time to get off the hill before dark, and carry a head torch.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 0 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.
Morning · 08:00–12:00
GoodSummit winds around 15-25 mph. Gusts around 25-35 mph are possible on exposed ground. Rain is forecast during this period.
72
Afternoon · 12:00–17:00
ExcellentSummit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground.
89
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of damp air: gusts of about 20 mph.59Mixed · 600 mView detailsHide details
Night beginning Thursday 5 November 2026
Full overnight outlook
A mixed night to camp, mainly because of damp air. Light winds on open ground, gusting no more than about 20 mph. Dry to pitch, then a little rain by morning, so you'll likely pack up in the wet. The air is damp at every height we checked (300-600 m), so expect heavy condensation. Leave the vents open. A cold night, down to about 3°C around 300 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 5 Nov, 17:00 GMT to 6 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m59 · mixed
Wind / gust
9 mph / 17 mph
Typical / low
3.5°C / 2.9°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m59 · mixed
Wind / gust
11 mph / 20 mph
Typical / low
3.5°C / 2.9°C · much of the night
In cloud
0% of modelled night
Condensation
High
Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°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.
Mixed conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Gusts of 25–35 mph could throw you off balance on exposed moves and ridges. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceWet rock likelyPeak gust25-35 mphRain0.4 mm
Main concernwet rock likely
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 darkBetaMostly cloudy, so little chance of seeing the stars.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-05. All times are UK local time.
Aurora is unlikely on this night
A noticeable aurora display is unlikely here. Any glow may be faint or camera-only. Activity peaks around Kp 3.7 (on a 0 to 9 scale). NOAA has a G1 storm watch out for this date, though the timing of the strongest activity can shift.
Activity can change at short notice. Check again on the night.
Stargazing
Poor sky conditions during the best available spell: 6 Nov, 02:00 GMT to 03:00 GMT.
Mostly cloudy, so little chance of seeing the stars.
Moon-free dark sky: 5 Nov, 18:35 GMT to 6 Nov, 04:15 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
5 Nov, 18:35 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times.
5 Nov, 23:00 GMT to 6 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 05:00 GMT to 05:20 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Moon, darkness and meteor showers
Crescent moon, about 10% illuminated.
Moonrise around 6 Nov, 04:15 GMT.
Full darkness: 5 Nov, 18:35 GMT to 6 Nov, 05:20 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Orionids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Leonids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Thursday 5 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:000-10 mph southeasterlySummit gusts · 08:00-17:005-15 mphFeels like-2 to 2°CPrecipitationUp to around 2 mmCloud-free summit estimate25%Cloud base through day600-900 mFreezing levelAbove summitDaylightSunrise 07:16 · Sunset 16:37 · 9.3 hours daylight
The day on the hill
A mixed day on Fan Llia, with cloud coming and going on the summit.
Wind
On the summit expect light winds of up to 10 mph, mainly south-easterly, with gusts of 5–15 mph at the windiest.
Cloud and visibility
Expect the summit to be in cloud for most of the day. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice. In cloud you'll be finding your way without landmarks, so carry navigation you trust and know how to use, with a backup such as a spare battery or a map and compass.
Rain and ground
Drizzle at first, clearing by mid-morning.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like -2 to 2°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
Sunset is around 4:35pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
Cloud height is hard to pin down, so the summit could be in or out of cloud at short notice. It's still two days off and could change, so check again nearer the time.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates Less than 1 hour 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.
Morning · 08:00–12:00
MixedSummit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground. Rain is forecast during this period.
62
Afternoon · 12:00–17:00
MixedSummit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground.
65
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of damp air: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Friday 6 November 2026
Full overnight outlook
A mixed night to camp, mainly because of damp air. Light winds on open ground, gusting no more than about 8 mph. It should stay dry. The air is damp at every height we checked (300-600 m), so expect heavy condensation. Leave the vents open. Overnight lows of about 3°C at 300 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Cloud may affect views of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 6 Nov, 17:00 GMT to 7 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m59 · mixed
Wind / gust
3 mph / 6 mph
Typical / low
3.7°C / 3.2°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m59 · mixed
Wind / gust
4 mph / 8 mph
Typical / low
3.7°C / 3.2°C · much of the night
In cloud
0% of modelled night
Condensation
High
Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°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.
Poor conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceWet rock likelyPeak gust5-15 mphRain0.4 mm
Main factorswet rock likelymuch of the route may be in cloud
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 darkBetaSome forecasts show clear spells, others keep it cloudy; check again nearer the time.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-06. All times are UK local time.
A noticeable aurora display is unlikely; any glow may be faint or camera-only
A noticeable aurora display is unlikely here. Any glow may be faint or camera-only. Activity peaks around Kp 5.0 (on a 0 to 9 scale). NOAA has a G1 storm watch out for this date, though the timing of the strongest activity can shift.
Activity can change at short notice. Check again on the night.
Stargazing
Mixed sky conditions during the best available spell: 6 Nov, 23:00 GMT to 7 Nov, 00:00 GMT.
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Moon-free dark sky: 6 Nov, 18:35 GMT to 7 Nov, 05:25 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
6 Nov, 18:35 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
6 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
6 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
6 Nov, 22:00 GMT to 23:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
6 Nov, 23:00 GMT to 7 Nov, 00:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
7 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 05:00 GMT to 05:25 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 5% illuminated.
Moonrise around 7 Nov, 05:35 GMT.
Full darkness: 6 Nov, 18:35 GMT to 7 Nov, 05:25 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Orionids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Leonids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Friday 6 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:000-10 mph northwesterlySummit gusts · 08:00-17:000-10 mphFeels like0 to 4°CPrecipitationLittle or noneCloud-free summit estimate60%Cloud base through day600-1,400 mFreezing levelAbove summitDaylightSunrise 07:18 · Sunset 16:36 · 9.3 hours daylight
The day on the hill
A good day on Fan Llia: dry, with light winds.
Wind
On the summit expect light winds of up to 10 mph, mainly north-westerly, with gusts of 0–10 mph at the windiest.
Cloud and visibility
Cloud on the tops early should lift off them by midday. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice. Mist or fog is possible in the valleys early on, clearing by about 4am. Good spells of sunshine are likely.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like 0 to 4°C in the wind. The freezing level is above the summits. Take a warm layer and a hat for the top.
Daylight
Sunset is around 4:35pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
Cloud height is hard to pin down, so the summit could be in or out of cloud at short notice. It's still three days off and could change, so check again nearer the time.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 7.1 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.
Morning · 08:00–12:00
MixedSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground.
66
Afternoon · 12:00–17:00
ExcellentSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.
90
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of the cold: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Saturday 7 November 2026
Full overnight outlook
A mixed night to camp, mainly because of the cold. Light winds on open ground, gusting no more than about 9 mph. It should stay dry. Overnight lows of about 4°C at 600 m. A 3-season bag rated to about 2°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Cloud may affect views of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 7 Nov, 17:00 GMT to 8 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m59 · mixed
Wind / gust
5 mph / 7 mph
Typical / low
5.0°C / 4.6°C · several hours
In cloud
0% of modelled night
Condensation
Moderate
600 m59 · mixed
Wind / gust
6 mph / 9 mph
Typical / low
4.9°C / 4.5°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 2°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.
Good conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceProbably dryPeak gust0-10 mphRain0.0 mm
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 darkBetaSome breaks in the cloud, so stars at times.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-07. All times are UK local time.
Stargazing
Mixed sky conditions during the best available spell: 7 Nov, 19:00 GMT to 20:00 GMT.
Some breaks in the cloud, so stars at times.
Moon-free dark sky: 7 Nov, 18:30 GMT to 8 Nov, 05:25 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
7 Nov, 18:30 GMT to 19:00 GMT
Mixed sky conditions
Some breaks in the cloud, so stars at times.
7 Nov, 19:00 GMT to 20:00 GMT
Mixed sky conditions
Some breaks in the cloud, so stars at times.
7 Nov, 20:00 GMT to 21:00 GMT
Mixed sky conditions
Some breaks in the cloud, so stars at times.
7 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Some breaks in the cloud, so stars at times. Hazy, which dims the fainter stars.
7 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
7 Nov, 23:00 GMT to 8 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
8 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 05:00 GMT to 05:25 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 2% illuminated.
Moonrise around 8 Nov, 06:55 GMT.
Full darkness: 7 Nov, 18:30 GMT to 8 Nov, 05:25 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Orionids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Leonids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Saturday 7 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
A fine day on Fan Llia: dry, with light winds and clear tops for most of the day.
Wind
On the summit expect light winds of up to 10 mph, mainly westerly, with gusts of 0–10 mph at the windiest.
Cloud and visibility
The tops are likely to stay mostly clear of cloud, though brief patches cannot be ruled out.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like 0 to 4°C in the wind. The freezing level is close to summit height. Take a warm layer and a hat for the top.
Daylight
Sunset is around 4:35pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
Cloud height is hard to pin down, so the summit could be in or out of cloud at short notice. It's still four days off and could change, so check again nearer the time.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 4.2 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.
Morning · 08:00–12:00
ExcellentSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground.
90
Afternoon · 12:00–17:00
ExcellentSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground.
90
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of damp air: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Sunday 8 November 2026
Full overnight outlook
A mixed night to camp, mainly because of damp air. Light winds on open ground, gusting no more than about 20 mph. It should stay dry. Up around 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. The air is damp down around 300 m, so expect heavy condensation. Leave the vents open. A cold night, down to about 2°C around 300 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°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.
Good conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceProbably dryPeak gust0-10 mphRain0.0 mm
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 darkBetaForecasts disagree about rain or haze, so it could be murkier than this looks.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-08. All times are UK local time.
Aurora outlook
Nothing notable expected.
A broad activity outlook, not a forecast of a visible display. Cloud and activity can change before the night.
Stargazing
Good sky conditions during the best available spell: 8 Nov, 19:00 GMT to 20:00 GMT.
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Moon-free dark sky: 8 Nov, 18:30 GMT to 9 Nov, 05:25 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
8 Nov, 18:30 GMT to 19:00 GMT
Good sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
8 Nov, 19:00 GMT to 20:00 GMT
Good sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
8 Nov, 20:00 GMT to 21:00 GMT
Mixed sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
8 Nov, 21:00 GMT to 22:00 GMT
Mixed sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
8 Nov, 22:00 GMT to 23:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
8 Nov, 23:00 GMT to 9 Nov, 00:00 GMT
Poor sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
9 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 05:00 GMT to 05:25 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 0% illuminated.
Full darkness: 8 Nov, 18:30 GMT to 9 Nov, 05:25 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Leonids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Sunday 8 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:0015-25 mph southeasterlySummit gusts · 08:00-17:0020-30 mphFeels like-4 to 0°CPrecipitationUp to around 2 mmCloud-free summit estimate50%Cloud base through day500-2,200 mFreezing levelAbove summitDaylightSunrise 07:22 · Sunset 16:32 · 9.2 hours daylight
The day on the hill
A mixed day on Fan Llia: breezy on the tops.
Wind
On the summit expect a south-easterly wind of 15–25 mph for most of the day, with gusts of 20–30 mph at the windiest. Lower down on the open hillside the wind will be light, under 10 mph. A wind like that will be noticeable on ridges and open tops, and you will chill quickly when you stop.
Cloud and visibility
The tops start clear, but the cloud comes down onto them early in the morning. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice. Mist or fog is possible in the valleys early on, clearing by about 7am.
Rain and ground
Drizzle sets in mid-afternoon.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like -4 to 0°C in the wind. The freezing level is close to summit height. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
Sunset is around 4:30pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
There is some disagreement between forecast models on wind strength. It's still five days off and could change, so check again nearer the time.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 4.6 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.
Morning · 08:00–12:00
GoodSummit winds around 15-25 mph. Gusts around 20-30 mph are possible on exposed ground. Summit cloud becomes more persistent later.
74
Afternoon · 12:00–17:00
MixedSummit winds around 15-25 mph. Gusts around 20-30 mph are possible on exposed ground. Rain is forecast during this period.
56
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of the rain: around 11 mm of rain.49Poor · 600 mView detailsHide details
Night beginning Monday 9 November 2026
Full overnight outlook
A mixed night to camp, mainly because of the rain. Gusts reach about 25 mph on open ground, so peg out well and use the guylines. Look for shelter from the east. Expect a wet night, around 11 mm of rain, with rain while you pitch and still falling when you pack up. Up around 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. Overnight lows of about 4°C at 600 m. A 3-season bag rated to about 2°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Warmth planning: As a broad starting point, consider a 3-season bag with an ISO/EN comfort rating at or below about 2°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.
Poor conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Gusts of 20–30 mph will be noticeable on exposed ridges. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceWet rock likelyPeak gust20-30 mphRain0.4 mm
Main factorswet rock likelymuch of the route may be in cloud
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 darkBetaMostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-09. All times are UK local time.
Aurora outlook
Nothing notable expected.
A broad activity outlook, not a forecast of a visible display. Cloud and activity can change before the night.
Stargazing
Poor sky conditions during the best available spell: 9 Nov, 19:00 GMT to 20:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 9 Nov, 18:30 GMT to 10 Nov, 05:30 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
9 Nov, 18:30 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 23:00 GMT to 10 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 05:00 GMT to 05:30 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 1% illuminated.
Full darkness: 9 Nov, 18:30 GMT to 10 Nov, 05:30 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Leonids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Monday 9 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
A poor day on the tops of Fan Llia, with rain for much of the day and a blustery wind.
Wind
On the summit expect an easterly wind of 15–35 mph for most of the day, with gusts of 35–45 mph at the windiest. Lower down on the open hillside it will be more like 5–15 mph. Gusts like that are strong enough to make walking into it hard work, with buffeting on ridges and edges. If the windier forecast models are right, summit gusts could reach 45–55 mph.
Cloud and visibility
The tops are likely to drift in and out of cloud, with the best chance of a clear summit early in the morning. The cloud base could be as low as 400–700 m in the early afternoon. In cloud you'll be finding your way without landmarks, so carry navigation you trust and know how to use, with a backup such as a spare battery or a map and compass.
Rain and ground
Rain for much of the day, turning lighter later. Expect 5–10 mm in total. Some forecast models keep it drier in the morning.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like -4 to 0°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer. Pack waterproofs too, and keep a warm layer dry in your pack.
Daylight
Sunset is around 4:30pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
It's still six days off and could change, so check again nearer the time.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 0 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.
Morning · 08:00–12:00
PoorSummit winds around 15-30 mph. Gusts around 30-40 mph are possible on exposed ground. Summit cloud becomes more persistent later. Rain is forecast during this period. Some forecast models bring rain during the morning, while others keep it mostly dry.
37
Afternoon · 12:00–17:00
PoorSummit winds around 25-35 mph. Gusts around 35-45 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges. Rain is forecast during this period. Some forecast models bring rain during the afternoon, while others keep it mostly dry.
25
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA poor night to camp on open ground: gusts of about 40 mph.39Poor · 600 mView detailsHide details
Night beginning Tuesday 10 November 2026
Full overnight outlook
A poor night to camp on open ground. Gusts reach about 40 mph on open ground, which makes for a noisy, testing night even in a good tent. Look for shelter from the east. Expect some light rain, with rain while you pitch and still falling when you pack up. Up around 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. Overnight lows of about 4°C at 300 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°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.
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Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling: gusts of 35–45 mph.Poor9View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Very poor conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Gusts of 35–45 mph could throw you off balance on exposed moves and ridges. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceWet rock likelyPeak gust35-45 mphRain9.3 mm
Main factorsgusts of 35–45 mphwet rock likelymuch of the route may be in cloud
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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Overnight · Aurora, stars & meteorsAfter darkBetaMostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-10. All times are UK local time.
Aurora outlook
Nothing notable expected.
A broad activity outlook, not a forecast of a visible display. Cloud and activity can change before the night.
Stargazing
Poor sky conditions during the best available spell: 10 Nov, 19:00 GMT to 20:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 10 Nov, 18:25 GMT to 11 Nov, 05:30 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
10 Nov, 18:25 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 23:00 GMT to 11 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
11 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 05:00 GMT to 05:30 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
Moon, darkness and meteor showers
Near-new moon, about 3% illuminated.
Full darkness: 10 Nov, 18:25 GMT to 11 Nov, 05:30 GMT.
Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.
Southern Taurids are active on this night. Activity may be much lower away from the peak.
Northern Taurids are active on this night. Activity may be much lower away from the peak.
Leonids are active on this night. Activity may be much lower away from the peak.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 October 2026.
Northern Taurids: peak around 12 November 2026.
Leonids: peak around 18 November 2026.
Geminids: peak around 14 December 2026.
Ursids: peak around 22 December 2026.
Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.
Darkness of the surroundings
Estimated darkness rank 926 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.
2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.
VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.
Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.
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 Llia on Tuesday 10 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:0010-25 mph easterlySummit gusts · 08:00-17:0020-30 mphFeels like-4 to 0°CPrecipitationUp to around 2 mmCloud-free summit estimate90%Cloud base through day700-1,000 mFreezing levelAbove summitDaylightSunrise 07:25 · Sunset 16:29 · 9.1 hours daylight
The day on the hill
A good day on Fan Llia: light winds and clear tops for most of the day.
Wind
On the summit expect an easterly wind of 10–25 mph for most of the day, with gusts of 20–30 mph at the windiest. Lower down on the open hillside it will be more like 5–15 mph.
Cloud and visibility
The tops are likely to stay mostly clear of cloud, though brief patches cannot be ruled out.
Rain and ground
Drizzle at first, clearing by midday. It will be wet underfoot after recent rain.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like -4 to 0°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
Sunset is around 4:30pm, so allow time to get off the hill before dark, and carry a head torch.
Forecast confidence
It's still seven days off and could change, so check again nearer the time.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 0 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.
Morning · 08:00–12:00
GoodSummit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Rain is forecast during this period.
80
Afternoon · 12:00–17:00
GoodSummit winds around 15-25 mph. Gusts around 20-30 mph are possible on exposed ground.
80
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of damp air: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Wednesday 11 November 2026
Full overnight outlook
A mixed night to camp, mainly because of damp air. Light winds on open ground, gusting no more than about 25 mph. It should stay dry. The air is damp at every height we checked (300-600 m), so expect heavy condensation. Leave the vents open. Overnight lows of about 4°C at 300 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°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.
Mixed conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Gusts of 20–30 mph will be noticeable on exposed ridges. The rock around the summit is mostly sandstone, a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.
Rock surfaceWet rock likelyPeak gust20-30 mphRain0.4 mm
Main concernwet rock likely
Representative rock around the summit
Sandstone with clay-rich rockBrownstones Formation
Origin
Sedimentary
Broad rock-response group
Sandstone or gritstone
Mapping
BGS Geology 50K · 1:50,000
Summit area
Sandstone or gritstone in 100% of 17 BGS samples within 350 m
Sandstone is a gritty sedimentary rock. It is rough and grippy when dry and can feel greasy when damp or covered in lichen. It is usually solid in terraced steps, but softer layers crumble and weathered edges can break away. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.
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 Llia on Wednesday 11 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
