Mountain weather

Southwest Highlands

Southwest Highlands Mountain weather forecast table

Confidence

High for Tuesday. High for changeable weather for the rest of the week.

Sunrise:
Sunset:

This evening forecast

Sleet and snow showers across northern Argyll and southern Lochaber, otherwise dry. Freezing level 1000 metres.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

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

hazard 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.

hazard 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.
hazard 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.
hazard 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

Cold and windy with snow showers in the north, drier in the south

Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather
(at 800m)
Partly cloudy (night) Partly cloudy (night) Partly cloudy (night) Sunny intervals Heavy snow shower (day) Heavy snow shower (day) Partly cloudy (night) Partly cloudy (night)
Chance of precipitation
(at 800m)
20% 20% 20% 30% 30% 30% 30% 20%

Wind direction and speed (mph)
Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
1300m S
24
S
25
SW
24
S
26
SW
31
SW
33
SW
31
S
30
900m SW
16
SW
18
SW
16
SW
18
SW
22
SW
24
SW
23
S
22
600m S
18
SW
21
SW
19
S
23
SW
27
SW
29
SW
28
S
27
300m S
9
S
11
SW
9
S
12
S
13
S
14
S
14
S
14
Glen SW
5
SW
7
SW
7
SW
9
SW
9
SW
10
SW
10
S
9
Wind gust (mph)
Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
1300m 29 31 29 33 39 41 39 38
900m 20 24 21 24 29 32 31 30
600m 23 26 24 29 34 37 35 35
300m 13 17 14 19 20 23 23 23
Glen 10 16 15 18 20 22 21 20

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
1300m
-2°
-3°
-3°
-3°
-3°
-3°
-3°
-3°
900m
-1°
600m
300m
Glen
Freezing Level
900m
800m
800m
800m
800m
800m
800m
900m

Altitude above mean sea level
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
1300m
-10°
-11°
-11°
-11°
-12°
-12°
-12°
-12°
900m
-6°
-7°
-6°
-7°
-7°
-8°
-8°
-8°
600m
-3°
-4°
-4°
-4°
-5°
-5°
-5°
-5°
300m
-1°
-1°
Glen

Additional weather information

Met Office Aberdeen meteorologist's view

Higher summit gales will lead to severe wind chill.

Weather

Arran, Kintyre and Jura will see a fair amount of dry weather with some sunshine. Across Argyll, the Trossachs and southern Lochaber there will be more in the way of cloud with occasional snow showers. Showers will be heaviest and most frequent across southern Lochaber and northern Argyll.

Chance of cloud-free hill tops

70%

Low cloud and visibility

Generally very good visibility with patchy cloud above 800 metres, this most extensive across northern Argyll and southern Lochaber.

Sunrise:
Sunset:

Mountain weather information

Weather

Snow will quickly spread east through the morning before turning to rain at all levels by mid-morning. Drier and clearer weather will spread from the west through the afternoon along with a few showers. Showers will as snow on the very highest tops.

Chance of cloud-free hill tops

40%, best chance in the afternoon

Maximum wind speed expected

Southwesterly average speeds of 45 mph with gusts to 65 mph, but gusts of 80 mph or more across the higher peaks of the Nevis ranges

Temperature

  • At 800m 0 rising to 4 Celsius
  • Glen Plus 2 rising to 8 Celsius
  • Freezing level 800 metres rising above summits, falling to 1200 metres later in the day

Low cloud and visibility

Poor in widespread cloud down to 700 to 900 metres, this becoming much more broken from the west in the afternoon

Mountain weather information

Thu 18 Dec

Sunrise:
Sunset:

Windy with showers or occasionally longer spells of rain, wintry on summits. Strong to gale summit southwesterly winds.

Fri 19 Dec

Sunrise:
Sunset:

Windy with scattered showers, wintry on the summits. Strong to gale summit westerly winds.

Sat 20 Dec

Sunrise:
Sunset:

Little change, remaining unsettled with showers or longer spells of rain, wintry on the higher tops.

Updated at:

Summit specific forecast

Mountain summit forecast map

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For snow and avalanche hazard forecasts please visit Scottish Avalanche Information Service