Mountain weather
Southwest Highlands
Confidence
Unsettled and often windy with summit gales towards the end of the week, blustery Autumnal conditions. Some brighter weather to be found mainly further east with the weather moving in from the Atlantic. Uncertainties in cloud details and amount of showers on any day.
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This eveningSunrise:Sunset:
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Thu 17 SepSunrise:Sunset:
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Fri 18 SepSunrise:Sunset:
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Further outlook
This evening forecast
Rain through the evening will turn heavier and more persistent for a time accompanied by strong west or southwesterly winds.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Gales
Severe Chill Effect
Poor Visibility
Mountain weather forecast
Dry and bright start in the east, becoming showery everywhere, strong westerly winds, summit gales likely.
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Time
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Time |
00:00
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03:00
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06:00
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09:00
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12:00
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15:00
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18:00
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21:00
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|---|---|---|---|---|---|---|---|---|---|
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Weather
(at 800m)
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Weather symbols | ||||||||
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Chance of
precipitation (at 800m)
|
Chance of precipitation |
30%
|
50%
|
50%
|
50%
|
70%
|
70%
|
70%
|
40%
|
Wind direction and speed
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Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
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|---|---|---|---|---|---|---|---|---|---|
|
1300m
|
1300m | SW 34mph knots
SW
34mph |
SW 37mph knots
SW
37mph |
SW 41mph knots
SW
41mph |
SW 43mph knots
SW
43mph |
SW 44mph knots
SW
44mph |
W 46mph knots
W
46mph |
W 44mph knots
W
44mph |
SW 41mph knots
SW
41mph |
|
900m
|
900m | W 23mph knots
W
23mph |
SW 25mph knots
SW
25mph |
SW 28mph knots
SW
28mph |
SW 29mph knots
SW
29mph |
W 31mph knots
W
31mph |
W 31mph knots
W
31mph |
W 30mph knots
W
30mph |
W 29mph knots
W
29mph |
|
600m
|
600m | SW 25mph knots
SW
25mph |
SW 28mph knots
SW
28mph |
SW 30mph knots
SW
30mph |
SW 30mph knots
SW
30mph |
SW 32mph knots
SW
32mph |
SW 32mph knots
SW
32mph |
SW 31mph knots
SW
31mph |
SW 28mph knots
SW
28mph |
|
300m
|
300m | SW 12mph knots
SW
12mph |
SW 14mph knots
SW
14mph |
SW 17mph knots
SW
17mph |
SW 16mph knots
SW
16mph |
SW 18mph knots
SW
18mph |
W 18mph knots
W
18mph |
SW 16mph knots
SW
16mph |
SW 16mph knots
SW
16mph |
|
Glen
|
Glen | SW 9mph knots
SW
9mph |
SW 9mph knots
SW
9mph |
SW 10mph knots
SW
10mph |
SW 13mph knots
SW
13mph |
W 13mph knots
W
13mph |
W 15mph knots
W
15mph |
W 13mph knots
W
13mph |
SW 11mph knots
SW
11mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1300m
|
1300m | 42mph | 46mph | 51mph | 54mph | 56mph | 58mph | 57mph | 52mph |
|
900m
|
900m | 31mph | 34mph | 38mph | 39mph | 42mph | 43mph | 43mph | 40mph |
|
600m
|
600m | 32mph | 36mph | 39mph | 40mph | 43mph | 43mph | 43mph | 39mph |
|
300m
|
300m | 20mph | 23mph | 26mph | 26mph | 29mph | 30mph | 28mph | 27mph |
|
Glen
|
Glen | 21mph | 22mph | 23mph | 27mph | 27mph | 31mph | 28mph | 24mph |
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Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1300m
|
1300m | 4 degrees Celsius 4°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C |
|
900m
|
900m | 7 degrees Celsius 7°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C |
|
600m
|
600m | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C |
|
300m
|
300m | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C |
|
Glen
|
Glen | 13 degrees Celsius 13°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C |
| Freezing Level | Freezing Level |
1700m
|
1600m
|
1600m
|
1700m
|
1700m
|
1600m
|
1500m
|
1500m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1300m
|
1300m | -3 degrees Celsius -3°C | -5 degrees Celsius -5°C | -6 degrees Celsius -6°C | -5 degrees Celsius -5°C | -5 degrees Celsius -5°C | -6 degrees Celsius -6°C | -6 degrees Celsius -6°C | -7 degrees Celsius -7°C |
|
900m
|
900m | 2 degrees Celsius 2°C | 0 degrees Celsius 0°C | -1 degrees Celsius -1°C | 0 degrees Celsius 0°C | 0 degrees Celsius 0°C | -1 degrees Celsius -1°C | -1 degrees Celsius -1°C | -2 degrees Celsius -2°C |
|
600m
|
600m | 5 degrees Celsius 5°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C |
|
300m
|
300m | 9 degrees Celsius 9°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 6 degrees Celsius 6°C | 6 degrees Celsius 6°C |
|
Glen
|
Glen | 11 degrees Celsius 11°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C |
| Freezing Level | Freezing Level |
1700m
|
1600m
|
1600m
|
1700m
|
1700m
|
1600m
|
1500m
|
1500m
|
Additional weather information
Meteorologist's view
Summit gales likely with gusty winds around showers especially for the northern Munros of Lochaber
Weather
Showers in the west overnight, clear spells in the east. A bright start around eastern hills but a few showers for western ranges. The general theme will be a showery day with showers grouping together at times in the west to give longer spells of rain, some bright and dry weather at times for eastern hills. Becoming very blustery by late morning with summit gales likely in the afternoon and feeling quite chilly for the time of year.
Chance of cloud-free hill tops
30% in the west, 50% in the east. Best chance of clear summits likely for ranges in the Trossachs.
Low cloud and visibility
Patches of low cloud above 600m to start the day but as showers become more frequent cloud will gather and lower in more persistent showers with periods of low cloud above 400m, the best conditions will be found in the east with a good chance of some summit views across the ranges at times. Visibility will be good outwith showers turning moderate in heavier shower and perhaps poor for a time in the west in extended showers.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
A few showers during the morning and becoming quite cloudy, rain spreading in from the west during the morning, this will be intermittent and mainly light but there could be a few heavier spells developing, the best of any brighter conditions will be around eastern hills. Drier during the late afternoon but any low cloud slow to clear. Strong southwesterly winds.
Chance of cloud-free hill tops
70% in the east, 40% in the west.
Maximum wind speed expected
Southwesterly 30-25 with gusts 40mph.
Temperature
- At 800m Plus 5 Celsius
- Glen Plus 10 rising to 14 Celsius.
- Freezing level Above all summits
Low cloud and visibility
Low cloud will build in the west through the morning with bases around 500m, further east cloud will be more scattered above 600m. Good visibility in the east, moderate at times in the west in rain.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Sat 19 Sep
A blustery, showery day with strong westerly winds, showers more frequent in the west with the best conditions to be found in the east.
Sun 20 Sep
A few showers in the morning but winds tending to ease during the day with some Autumnal sunshine later in the day.
Mon 21 Sep
A return to stronger winds and some rain or showers.
Summit specific forecast
Including Ben Nevis, Glen Coe and the rest of Lochaber, Argyll including the Isles, Loch Lomond, Trossachs and Arran