Mountain weather

Mountain weather

Eryri / Snowdonia

Confidence

High confidence for mainly dry weather over this period. Some uncertainty in the strength of the easterly winds from Tuesday onwards.

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.

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.

Mountain weather forecast

Dry with long sunny spells. Cold and breezy on the tops.

Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
Weather
(at 800m)
Weather symbols Partly cloudy (night) Sunny intervals Sunny intervals Cloudy Cloudy Cloudy
Chance of
precipitation
(at 800m)
Chance of precipitation
10%
10%
10%
10%
10%
10%

Wind direction and speed

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m NE 27mph knots
NE
27mph
NE 23mph knots
NE
23mph
NE 22mph knots
NE
22mph
NE 24mph knots
NE
24mph
NE 25mph knots
NE
25mph
NE 24mph knots
NE
24mph
600m
600m SE 9mph knots
SE
9mph
N 9mph knots
N
9mph
NE 10mph knots
NE
10mph
NE 9mph knots
NE
9mph
N 13mph knots
N
13mph
N 12mph knots
N
12mph
300m
300m S 5mph knots
S
5mph
SE 4mph knots
SE
4mph
NE 6mph knots
NE
6mph
N 5mph knots
N
5mph
N 6mph knots
N
6mph
NW 7mph knots
NW
7mph
Valley
Valley S 4mph knots
S
4mph
SE 4mph knots
SE
4mph
NE 6mph knots
NE
6mph
N 5mph knots
N
5mph
N 6mph knots
N
6mph
NW 6mph knots
NW
6mph

Wind gust

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m 33mph 28mph 28mph 30mph 30mph 29mph
600m
600m 12mph 12mph 14mph 13mph 18mph 16mph
300m
300m 7mph 10mph 13mph 11mph 12mph 11mph
Valley
Valley 6mph 9mph 13mph 10mph 11mph 10mph

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m -5 degrees Celsius -4 degrees Celsius -3 degrees Celsius -3 degrees Celsius -3 degrees Celsius -3 degrees Celsius
600m
600m 1 degrees Celsius 1 degrees Celsius 3 degrees Celsius 3 degrees Celsius 1 degrees Celsius 2 degrees Celsius
300m
300m 5 degrees Celsius 6 degrees Celsius 8 degrees Celsius 8 degrees Celsius 6 degrees Celsius 6 degrees Celsius
Valley
Valley 6 degrees Celsius 8 degrees Celsius 9 degrees Celsius 9 degrees Celsius 7 degrees Celsius 8 degrees Celsius
Freezing Level Freezing Level
1200m
1200m
1300m
1300m
1400m
1400m

Additional weather information

Meteorologist's view

A bright and clear day but feeling very cold on the tops in the strong winds so warm and windproof clothing will be required.

Weather

A mostly bright or sunny morning then cloud developing in the afternoon but still staying mostly dry and bright.

Chance of cloud-free hill tops

100%, becoming 60% in evening.

Low cloud and visibility

Excellent visibility with no cloud on the hills during the day. Some patchy fog developing above 700m late in the evening.

Ground conditions

No recent ground conditions report available.

Summit specific forecast