Perthshire Highlands Mountain Weather Forecast

Mountain Weather brief

Perthshire Highlands

Thursday 3 September 2026 · Schiehallion, Ben Lawers and the Perthshire ranges

Confidence: Medium

Why: Rain could reach the main walking period or hold off until later; forecast models disagree on the timing.

What matters most

Poor visibility is the main concern. Expect showers or rain at times and summit clag likely.

High-ground wind · 900 m10 mph southwesterly Gusts · 900 m15 mph Cloud base500-1000 m Feels like · 900 m6°C

Morning · 07:00–13:00PoorSome early summit cloud is possible; rain timing remains uncertain.

36/100

Afternoon & evening · 13:00–22:00PoorRain timing remains uncertain.

29/100

Conservative regional grades across representative summits, so one sheltered hill does not overstate the wider area.

High-ground wind (900 m)

Southwesterly around 10 mph at 900 m. Gusts reaching around 15 mph at 900 m, with locally higher values possible on the most exposed tops. Starting nearer 5 mph, then strengthening toward 10 mph later.

Walking impact

Little effect on walking, although exposed tops may still feel chilly.

Thunderstorms

Thunderstorms are possible from late afternoon into the evening. Keep an escape route from exposed ridges and descend if thunder develops.

Rain and showers

Showers or spells of rain at times. The heaviest rain is expected later in the day.

Cloud-free summits

Around 10%.

Cloud and visibility

Cloud bases mostly around 500-1000 m. Most higher summits are likely to be in cloud for much of the day, with only brief or isolated breaks.

Temperature and wind chill

Around 8°C at 900 m, feeling like 6°C in the wind.

Freezing level

Above the summits.

Daylight

Sunrise 06:22 — Sunset 20:07 — about 13.8 hours daylight.

Overnight · 6 p.m.–9 a.m.Wild campingBetaThunder risk is around 23% in parts of the area; avoid exposed pitches if storms develop. 54/100Mixed · 600 m View detailsHide details

Regional night beginning Thursday 3 September 2026

Full regional overnight outlook

Across representative hills, open-hillside camping looks mixed around 600 m (54/100). A wet night is likely, with around 5 mm indicated between pitching and packing up.

Overnight rain5.3 mmOpen ground · 600 m6 mph · gusts 15 mphMorning pack-upDampness possible

Elevation reference (open ground)

300 m64/100 · mixed

Wind / gust: 6 / 11 mph
Coldest: 10.0°C
In cloud: Unlikely
Condensation: Moderate

600 m54/100 · mixed

Wind / gust: 6 / 15 mph
Coldest: 9.5°C
In cloud: 69% of night
Condensation: High

900 m54/100 · mixed

Wind / gust: 7 / 17 mph
Coldest: 7.3°C
In cloud: 100% 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 & scramblingBetaThunder risk is around 23% in parts of the area; exposed scrambling may be a poor choice. 25/100Poor · Poor View detailsHide details

Across representative exposed-rock terrain

Full regional climbing & scrambling outlook

Conditions for exposed scrambling across the area look poor (25/100). 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.

Rock surfaceWet rock likelyExposed gust16 mphRain4.2 mm

Mapped rock across sampled summits3 broad familiesRepresentative summit samples

psammite, pelite or semipelite 62% 5 representative summitsDry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet.quartzite 25% 2 representative summitsUsually hard and grippy when dry and often reasonably positive when damp, although wet lichen and smooth slabs can still be slippery.granite, gneiss or gabbro 12% 1 representative summitGenerally grippy when dry and often still positive when damp, but wet slabs, lichen, polish and drainage lines can remain slippery.

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.

Perthshire Highlands mountain weather forecast.