Mountain weather

Mountain weather

Eryri / Snowdonia

Confidence

High confidence for mainly dry weather until the end of 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 Sunny intervals Partly cloudy (night) Partly cloudy (night)
Chance of
precipitation
(at 800m)
Chance of precipitation
10%
10%
10%
10%
20%
20%

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 SE 3mph knots
SE
3mph
S 4mph knots
S
4mph
SW 3mph knots
SW
3mph
W 5mph knots
W
5mph
SW 4mph knots
SW
4mph
S 5mph knots
S
5mph
600m
600m S 5mph knots
S
5mph
S 4mph knots
S
4mph
SW 4mph knots
SW
4mph
SW 5mph knots
SW
5mph
S 5mph knots
S
5mph
S 4mph knots
S
4mph
300m
300m S 3mph knots
S
3mph
SE 3mph knots
SE
3mph
SW 3mph knots
SW
3mph
W 4mph knots
W
4mph
S 3mph knots
S
3mph
SE 3mph knots
SE
3mph
Valley
Valley S 3mph knots
S
3mph
S 3mph knots
S
3mph
S 3mph knots
S
3mph
W 3mph knots
W
3mph
S 3mph knots
S
3mph
S 3mph knots
S
3mph

Wind gust

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m 3mph 5mph 5mph 7mph 5mph 6mph
600m
600m 6mph 6mph 6mph 7mph 6mph 6mph
300m
300m 4mph 5mph 5mph 6mph 5mph 5mph
Valley
Valley 5mph 5mph 5mph 6mph 5mph 6mph

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m 2 degrees Celsius 2 degrees Celsius 2 degrees Celsius 2 degrees Celsius 1 degrees Celsius 0 degrees Celsius
600m
600m 4 degrees Celsius 3 degrees Celsius 4 degrees Celsius 4 degrees Celsius 3 degrees Celsius 2 degrees Celsius
300m
300m 6 degrees Celsius 6 degrees Celsius 8 degrees Celsius 8 degrees Celsius 6 degrees Celsius 5 degrees Celsius
Valley
Valley 7 degrees Celsius 8 degrees Celsius 10 degrees Celsius 10 degrees Celsius 7 degrees Celsius 7 degrees Celsius
Freezing Level Freezing Level
1300m
1400m
1400m
1400m
1400m
1400m

Additional weather information

Meteorologist's view

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

Weather

Patchy cloud but also sunny spells, especially this morning. Staying mainly dry, although isolated light showers are possible, particularly this evening.

Chance of cloud-free hill tops

70%.

Low cloud and visibility

Generally hazy to good visibility with areas of cloud above 700m, especially this evening. Poor or very poor visibility with the hill fog.

Ground conditions

No recent ground conditions report available.

Summit specific forecast