Bannau Brycheiniog (Brecon Beacons)
Monday 31 August 2026 · The central Beacons, Black Mountains and Fforest Fawr
Why: Clearer summits are favoured, but some forecast models are much cloudier.
Showers or rain at times. A noticeable westerly breeze, with cloud coming and going on the tops.
High-ground wind (700 m)
Westerly 15-20 mph at 700 m. Gusts reaching around 30 mph at 700 m, with locally higher values possible on the most exposed tops. Strongest early (around 15 mph), easing toward 10 mph later.
Walking impact
Noticeable on exposed ground, but unlikely to impede most walking.
Ground conditions
The ground is likely to be saturated after recent rain. Expect boggy paths and rapid runoff if more rain arrives.
Rain and showers
Showers or spells of rain at times. The heaviest rain is expected early in the day.
Cloud-free summits
Around 40%. Around 35% early, improving to around 50% later.
Cloud and visibility
Cloud bases mostly around 600-1000 m. Bases should tend to lift as the day goes on. Cloud bases are likely to remain high, but some forecast models are much cloudier, so more extensive summit cloud remains a credible outcome. Cloud is likely to come and go on the higher summits; breaks may be useful but not dependable.
Temperature and wind chill
Around 10°C at 700 m, feeling like 5°C in the wind.
Freezing level
Above the summits.
Daylight
Sunrise 06:23 — Sunset 20:03 — about 13.7 hours daylight.
Overnight · 6 p.m.–9 a.m.Wild campingBetaThunder risk is around 37% in parts of the area; avoid exposed pitches if storms develop. 54/100Mixed · 600 m View detailsHide details
Full regional overnight outlook
Across representative hills, open-hillside camping looks mixed around 600 m (54/100). Some overnight rain is likely, so expect a damp pitch or pack-up.
Elevation reference (open ground)
- Wind / gust
- 7 / 15 mph
- Coldest
- 11.1°C
- In cloud
- Unlikely
- Condensation
- Low
- Wind / gust
- 8 / 18 mph
- Coldest
- 10.8°C
- In cloud
- 50% of night
- Condensation
- Moderate
The ground is likely to be very wet after recent rain; expect boggy approaches and choose a durable pitch carefully.
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 & scramblingBetaWet rock is likely on some representative hills. 34/100Poor · Poor View detailsHide details
Full regional climbing & scrambling outlook
Conditions for exposed scrambling across the area look poor (34/100). Rain is likely to leave rock wet; polished slabs, vegetation and drainage lines may be notably worse. Gusts may reach about 25 mph on exposed ground, making crosswinds an important route consideration. Mapped summit-point geology across the representative hills includes sandstone or gritstone; moisture response can therefore vary substantially 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.
Updated 30 August 2026 at 04:40 UTC. See typical weekly and monthly conditions for Bannau Brycheiniog (Brecon Beacons).