Perthshire Highlands
Tuesday 1 September 2026 · Schiehallion, Ben Lawers and the Perthshire ranges
Why: Thunderstorm timing is inherently uncertain and may shift by several hours.
Thunderstorms are the main concern, especially on exposed summits and ridges. A noticeable westerly breeze and Persistent rain.
High-ground wind (900 m)
Westerly 15-20 mph at 900 m. Gusts reaching around 25 mph at 900 m, with locally higher values possible on the most exposed tops. Starting nearer 10 mph, then strengthening toward 15 mph later.
Walking impact
Noticeable on exposed ground, but unlikely to impede most walking.
Thunderstorms
A moderate thunderstorm risk is indicated from the morning into the afternoon. Avoid committing to exposed summits or ridges while storms are building or nearby.
Spate risk
There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. The heaviest rain is expected early in the day. Crossing risk is expected from around 02:00 until around 20:00. Turn back if a crossing looks unsafe.
Rain and showers
Persistent rain for much of the day. The heaviest rain is expected early in the day.
Cloud-free summits
Around 50%. Around 25% early, improving to around 60% later.
Cloud and visibility
Cloud bases mostly around 1100-1700 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 5°C at 900 m, feeling like 0°C in the wind.
Freezing level
Above the summits.
Daylight
Sunrise 06:18 — Sunset 20:13 — about 13.9 hours daylight.
Overnight · 6 p.m.–9 a.m.Wild campingBetaGusts near 30 mph make sheltered pitches important. 79/100Good · 600 m View detailsHide details
Full regional overnight outlook
Across representative hills, open-hillside camping looks reasonable around 600 m (79/100). Higher pitches look less comfortable, with colder, cloudier or more exposed conditions. Open-ground gusts may reach about 30 mph, so sheltered pitches will matter. Little rain is expected, but cloud or condensation could still mean a wet pack-up.
Elevation reference (open ground)
- Wind / gust
- 11 / 20 mph
- Coldest
- 7.5°C
- In cloud
- Unlikely
- Condensation
- Low
- Wind / gust
- 14 / 28 mph
- Coldest
- 7.0°C
- In cloud
- Unlikely
- Condensation
- Moderate
- Wind / gust
- 16 / 32 mph
- Coldest
- 4.8°C
- In cloud
- 81% of night
- Condensation
- High
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 & scramblingBetaThunder risk is around 35% in parts of the area; exposed scrambling may be a poor choice. 0/100Poor · Very poor View detailsHide details
Full regional climbing & scrambling outlook
Conditions for exposed scrambling across the area look very poor (0/100). 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 psammite, pelite or semipelite, quartzite and 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 30 August 2026 at 04:40 UTC. See typical weekly and monthly conditions for Perthshire Highlands.