Northwest Highlands mountain weather forecast.

Wester Ross, Assynt and the far northwest. Height-aware guidance for wind, cloud, rain and temperature.

Mountain Weather brief

Northwest Highlands

Sunday 30 August 2026 · Wester Ross, Assynt and the far northwest

Confidence: Medium

Why: Thunderstorm timing is inherently uncertain and may shift by several hours.

What matters most

Thunderstorms are the main concern, especially on exposed summits and ridges. Light southeasterly wind and Showers or rain at times.

High-ground wind · 900 m5–10 mph southeasterly Gusts · 900 m15 mph Cloud base900-1300 m Feels like · 900 m6°C
Morning · 07:00–13:00PoorSome early summit cloud is possible.
48/100
Afternoon & evening · 13:00–22:00Poor
39/100

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

01

High-ground wind (900 m)

Southeasterly 5-10 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.

02

Walking impact

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

03

Thunderstorms

A moderate thunderstorm risk is indicated from the morning into the evening. Avoid committing to exposed summits or ridges while storms are building or nearby.

04

Spate risk

High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. The heaviest rain is expected later in the day. Crossing risk is expected from around 12:00, continuing overnight and easing after around 04:00 the following morning. Turn back if a crossing looks unsafe.

05

Rain and showers

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

06

Cloud-free summits

Around 35%. Around 40% early, falling to around 30% later.

07

Cloud and visibility

Cloud bases mostly around 900-1300 m. Cloud is likely to come and go on the higher summits; breaks may be useful but not dependable.

08

Temperature and wind chill

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

09

Freezing level

Above the summits.

10

Daylight

Sunrise 06:16 — Sunset 20:24 — about 14.2 hours daylight.

Overnight · 6 p.m.–9 a.m.Wild campingBetaThunder risk is around 32% in parts of the area; avoid exposed pitches if storms develop. 54/100Mixed · 600 m View detailsHide details
Regional night beginning Sunday 30 August 2026

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.

Overnight rain1.0 mmOpen ground · 600 m6 mph · gusts 12 mphMorning pack-upDampness possible
300 m55/100 · mixed
Wind / gust
5 / 10 mph
Coldest
11.6°C
In cloud
Unlikely
Condensation
High
600 m54/100 · mixed
Wind / gust
6 / 12 mph
Coldest
10.6°C
In cloud
58% of night
Condensation
High
900 m54/100 · mixed
Wind / gust
6 / 13 mph
Coldest
8.6°C
In cloud
58% 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 39% in parts of the area; exposed scrambling may be a poor choice. 5/100Poor · Very poor View detailsHide details
Across representative exposed-rock terrain

Full regional climbing & scrambling outlook

Conditions for exposed scrambling across the area look very poor (5/100). 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 and sandstone or gritstone; moisture response can therefore vary substantially between crags and routes.

Rock surfaceWet rock likelyExposed gust15 mphRain1.9 mm
Mapped rock across sampled summits2 broad familiesRepresentative summit samples
psammite, pelite or semipelite 88% 7 representative summitsDry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet.sandstone or gritstone 12% 1 representative summitUsually rough and grippy when dry. Damp sandstone and gritstone can feel greasy, and saturated sandstone may be weakened, so let the rock dry fully.

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 Northwest Highlands.

Stay near Northwest Highlands.

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