Lewis and Harris
Saturday 29 August 2026 · The Harris hills and Clisham
Why: Forecast models broadly agree on the conditions most relevant to walkers.
Mostly dry conditions. Light northeasterly wind, with cloud coming and going on the tops.
High-ground wind (700 m)
Northeasterly around 10 mph at 700 m. Gusts reaching around 15 mph at 700 m, with locally higher values possible on the most exposed tops. Little overall change through the day.
Walking impact
Little effect on walking, although exposed tops may still feel chilly.
Rain and showers
The odd passing shower, otherwise dry. The heaviest rain is expected around the middle of the day.
Cloud-free summits
Around 40%.
Cloud and visibility
Cloud bases mostly around 300-600 m. Bases are likely to lower later in the day. Cloud is likely to come and go on the higher summits; breaks may be useful but not dependable.
Temperature and wind chill
Around 9°C at 700 m, feeling like 6°C in the wind.
Freezing level
Above the summits.
Daylight
Sunrise 06:19 — Sunset 20:35 — about 14.2 hours daylight.
Overnight · 6 p.m.–9 a.m.Wild campingBetaA damp or wet night is likely, with about 8 mm before pack-up. 64/100Mixed · 600 m View detailsHide details
Full regional overnight outlook
Across representative hills, open-hillside camping looks mixed around 600 m (64/100). A wet night is likely, with around 8 mm indicated between pitching and packing up.
Elevation reference (open ground)
- Wind / gust
- 7 / 14 mph
- Coldest
- 9.1°C
- In cloud
- Unlikely
- Condensation
- High
- Wind / gust
- 8 / 16 mph
- Coldest
- 8.7°C
- In cloud
- 25% of night
- Condensation
- High
Open-hillside guidance across representative hills. Local shelter, ridges, tent design and the exact pitch can change conditions substantially. How to use 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. Mapped summit-point geology across the representative hills includes granite, gneiss or gabbro; 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 29 August 2026 at 04:40 UTC. See typical weekly and monthly conditions for Lewis and Harris.