Mountain weather

Mountain weather

Southwest Highlands

Confidence

High confidence for the general pattern until Monday becoming low from Tuesday. Lower confidence in timing detail of the rainfall.

Sunrise: Sunset:
Sunrise: Sunset:
Mountain hazards

Mountain weather hazards

Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.

Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
Poor Visibility
Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.

Severe Chill Effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.

Storm Force Winds
Storm force winds (gusts over 70mph) make walking very strenuous with any mobility virtually impossible over exposed ground. Where these conditions occur there is a high risk of being blown over and even standing may be impossible at times with a risk of being blown off one’s feet. Basic tasks such as using a map, eating, putting on extra clothing or communication become extremely difficult away from any shelter.
Thunderstorms
Lightning is a significant mountain hazard which can result in serious injury or death. Mountain terrain often leaves one highly exposed to lightning strikes. Hail may give unpleasant conditions with torrential rain and localised flash flooding also possible, mainly in Summer months.

Mountain weather forecast

Cloudy with frequent and sometimes heavy showers. Severe gale southwest summit winds.

Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
Weather
(at 800m)
Weather symbols Light rain showers Heavy rain showers Heavy rain showers Heavy rain showers Heavy Rain Light rain showers (night)
Chance of
precipitation
(at 800m)
Chance of precipitation
40%
50%
50%
50%
40%
40%

Wind direction and speed

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
1300m
1300m SW 50mph knots
SW
50mph
SW 47mph knots
SW
47mph
SW 42mph knots
SW
42mph
SW 42mph knots
SW
42mph
SW 46mph knots
SW
46mph
SW 41mph knots
SW
41mph
900m
900m SW 34mph knots
SW
34mph
SW 31mph knots
SW
31mph
W 29mph knots
W
29mph
W 30mph knots
W
30mph
SW 31mph knots
SW
31mph
W 27mph knots
W
27mph
600m
600m SW 47mph knots
SW
47mph
SW 37mph knots
SW
37mph
SW 33mph knots
SW
33mph
SW 34mph knots
SW
34mph
SW 36mph knots
SW
36mph
SW 31mph knots
SW
31mph
300m
300m SW 20mph knots
SW
20mph
SW 17mph knots
SW
17mph
W 18mph knots
W
18mph
SW 20mph knots
SW
20mph
SW 18mph knots
SW
18mph
SW 16mph knots
SW
16mph
Glen
Glen SW 15mph knots
SW
15mph
SW 13mph knots
SW
13mph
SW 15mph knots
SW
15mph
SW 15mph knots
SW
15mph
SW 13mph knots
SW
13mph
SW 11mph knots
SW
11mph

Wind gust

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
1300m
1300m 60mph 57mph 53mph 53mph 57mph 52mph
900m
900m 44mph 40mph 39mph 40mph 42mph 37mph
600m
600m 56mph 46mph 42mph 43mph 46mph 41mph
300m
300m 30mph 25mph 28mph 30mph 29mph 25mph
Glen
Glen 30mph 27mph 29mph 30mph 29mph 25mph

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
1300m
1300m -3 degrees Celsius -5 degrees Celsius -6 degrees Celsius -6 degrees Celsius -5 degrees Celsius -5 degrees Celsius
900m
900m 1 degrees Celsius 0 degrees Celsius 0 degrees Celsius 0 degrees Celsius 0 degrees Celsius 0 degrees Celsius
600m
600m 3 degrees Celsius 3 degrees Celsius 4 degrees Celsius 3 degrees Celsius 2 degrees Celsius 2 degrees Celsius
300m
300m 7 degrees Celsius 7 degrees Celsius 8 degrees Celsius 8 degrees Celsius 7 degrees Celsius 7 degrees Celsius
Glen
Glen 10 degrees Celsius 11 degrees Celsius 11 degrees Celsius 11 degrees Celsius 10 degrees Celsius 10 degrees Celsius
Freezing Level Freezing Level
1800m
1600m
1500m
1500m
1600m
1600m

Additional weather information

Meteorologist's view

Frequent showers some heavy and thundery at times making walking and navigation difficult.

Weather

Mostly cloudy with frequent showers, some heavy. The best of any bright spells will be found across southern ranges where showers will be less frequent.

Chance of cloud-free hill tops

30%.

Low cloud and visibility

Cloud will remain broken with base 600-800m, this falling to lower slopes in heavy rain. The visibility will fall poor or very poor at times in heavy showers.

Ground conditions

No recent ground conditions report available.

Summit specific forecast