Bannau Brycheiniog (Brecon Beacons)
A fine day in Bannau Brycheiniog (Brecon Beacons): dry, with light winds.
Sunshine and sky
Cloud becoming more extensive. Cloud cover is likely to increase as sunshine becomes less frequent.
These are direct modelled sunshine hours during daylight, not the probability of sunshine. Cloud cover and summit cloud are assessed separately in the forecast above. The regional median prevents one unusually bright or dull summit cell defining the whole area.
Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.
High-ground wind (700 m)
At around 700 m, expect a south-westerly wind of 5–15 mph, gusting 10–20 mph.
Walking impact
Little effect on walking, although exposed tops may still feel chilly.
Rain and showers
It should stay dry.
Cloud-free summits
Clear-summit estimate: about 60% early, about 60% around midday and about 65% later.
Cloud and visibility
The tops should stay mostly clear of cloud. Good spells of sunshine are likely. The air should be clear, so expect far-reaching views whenever the tops come out of the cloud.
Temperature and wind chill
At around 700 m it will be -2 to 2°C, feeling like -8 to -4°C in the wind. Take a hat, gloves, a windproof and a spare warm layer.
Freezing level
The freezing level is close to summit height.
Daylight
Sunrise 07:41, Sunset 16:16, about 8.6 hours daylight.
Overnight · 17:00–08:00Wild campingBetaAcross these hills, a poor night to camp on open ground: a frost, down to -3°C. 39Poor · 600 m View detailsHide details
Full regional overnight outlook
Across these hills, a poor night to camp on open ground. Gusts reach about 25 mph on open ground, so peg out well and use the guylines. Look for shelter from the south. It should stay dry. A frost at every height we checked (300-600 m), down to about -3°C.
Moon overnight
Waxing gibbous moon
- Illuminated disc
- 83%
- Moonrise
- Outside this window
- Moonset
- 03:33 next morning GMT
Cloud and terrain vary across the area. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 20 Nov, 17:00 GMT to 21 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Representative location: 51.884, -3.437. Times vary across the area.
Elevation reference (open ground)
- Wind / gust
- 10 mph / 22 mph
- Coldest
- -2.9°C
- In cloud
- 0% of modelled night
- Condensation
- Moderate
- Wind / gust
- 12 mph / 26 mph
- Coldest
- -2.9°C
- In cloud
- 0% of modelled night
- Condensation
- Low
Open-hillside guidance across representative hills. Local shelter, ridges, tent design and the exact pitch can change conditions substantially. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.
Daytime · exposed rockClimbing & scramblingBetaCold rock may reduce comfort and dexterity. 86Excellent · Good View detailsHide details
Regional climbing & scrambling outlook
A broad guide to dampness and exposed rock across the area, not a forecast for every crag. Lower, sheltered crags and individual rock types may behave differently.
Conditions for exposed scrambling across the area look good (86/100). Rock is likely to be mostly dry, though local seepage and shaded holds remain unresolved. Mapped summit-point geology across the representative hills includes sandstone or gritstone. Rock can therefore respond differently to moisture between crags and routes.
Representative summit-point samples across the region; individual crags and routes may differ.
Generic exposed hands-on-rock terrain across representative summits; mapped summit-point geology is a broad regional sample, not a named-route survey. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.
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.
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Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.
Updated 14 November 2026 at 16:37 UTC. See typical weekly and monthly conditions for Bannau Brycheiniog (Brecon Beacons).