Mountain weather

Mountain weather

Eryri / Snowdonia

Confidence

High for the ongoing fine and sunny weather to continue. Also high for cooler temperatures over the coming weekend, but likely staying dry.

Mountain hazards

Mountain weather hazards

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

Strong Sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.

Mountain weather forecast

Dry with warm sunny spells. Breezy.

Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
Weather
(at 800m)
Weather symbols Sunny intervals Sunny intervals Sunny intervals Sunny Sunny Partly cloudy (night)
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 SE 16mph knots
SE
16mph
SE 12mph knots
SE
12mph
E 8mph knots
E
8mph
NE 10mph knots
NE
10mph
N 7mph knots
N
7mph
NE 9mph knots
NE
9mph
600m
600m SE 6mph knots
SE
6mph
SE 9mph knots
SE
9mph
E 7mph knots
E
7mph
NE 10mph knots
NE
10mph
N 8mph knots
N
8mph
N 5mph knots
N
5mph
300m
300m SE 4mph knots
SE
4mph
SE 7mph knots
SE
7mph
NE 6mph knots
NE
6mph
NE 9mph knots
NE
9mph
N 6mph knots
N
6mph
N 3mph knots
N
3mph
Valley
Valley S 4mph knots
S
4mph
SE 7mph knots
SE
7mph
NE 6mph knots
NE
6mph
N 10mph knots
N
10mph
N 6mph knots
N
6mph
NW 3mph knots
NW
3mph

Wind gust

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m 20mph 15mph 11mph 13mph 10mph 12mph
600m
600m 13mph 12mph 10mph 14mph 11mph 7mph
300m
300m 11mph 10mph 9mph 13mph 10mph 6mph
Valley
Valley 11mph 10mph 10mph 14mph 9mph 5mph

Altitude above mean sea level
Time
Time
06:00
09:00
12:00
15:00
18:00
21:00
900m
900m 12 degrees Celsius 12 degrees Celsius 16 degrees Celsius 16 degrees Celsius 16 degrees Celsius 14 degrees Celsius
600m
600m 16 degrees Celsius 16 degrees Celsius 18 degrees Celsius 18 degrees Celsius 18 degrees Celsius 17 degrees Celsius
300m
300m 18 degrees Celsius 19 degrees Celsius 21 degrees Celsius 21 degrees Celsius 20 degrees Celsius 18 degrees Celsius
Valley
Valley 18 degrees Celsius 21 degrees Celsius 22 degrees Celsius 21 degrees Celsius 21 degrees Celsius 19 degrees Celsius
Freezing Level Freezing Level
2400m
2400m
2400m
2500m
2600m
2700m

Additional weather information

Meteorologist's view

High UV so appropriate sun protection is recommended. With sunshine largely unbroken, and warm temperatures, sufficient hydration will also be needed.

Weather

A dry and bright day with plenty of strong sunshine, possibly turning a little hazy at times due to high-level cloud.

Chance of cloud-free hill tops

Greater than 95%.

Low cloud and visibility

No low cloud or visibility issues expected, very good to excellent visibilities with wide ranging views of distant peaks possible.

Ground conditions

Please see - https://yrwyddfa.live/

Summit specific forecast