Mountain weather
Eryri / Snowdonia Mountain weather forecast table
Confidence
Please note we are aware of an issue affecting forecast wind speeds and gusts for higher-elevation sites (typically above 500m) displayed on the Met Office website and app. The winds shown here in our Mountain Area Forecasts are not affected by this. Our teams are actively working to correct the issue and updates will be deployed as soon as possible. High confidence for unsettled, cold and windy conditions throughout this period. Lower for daily rain and snow details, especially from Tuesday.
This evening forecast
Outbreaks of rain, heavy at times with snow above 700m. Very cold with gale force southeast winds, gusts 50-60mph on the tops with a chance of blizzard conditions. Freezing level 900m.
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.
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.
Blizzards
Blizzards and whiteouts present challenging and serious conditions due to a combination of falling or blowing snow, strong winds and cold temperatures. They can be highly disorientating, often resulting in near-zero visibility with limited or no visual references and no distinction between ground and sky. Cliff edges and cornices may not be apparent, even close up. These conditions require very good navigational skills.
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.
Mountain weather forecast
Cloudy with patchy rain or snow. Feeling very cold with strong easterly winds.
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
Weather (at 800m) |
|
|
|
|
|
|
|
|
Chance of precipitation (at 800m) |
80% | 80% | 30% | 30% | 30% | 60% | 60% | 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 |
|---|---|---|---|---|---|---|---|---|
| 900m |
SE
39
|
S
32
|
SE
32
|
E
33
|
SE
28
|
E
25
|
E
24
|
E
26
|
| 600m |
SE
28
|
S
22
|
SE
20
|
SE
21
|
SE
21
|
E
15
|
E
14
|
E
16
|
| 300m |
SE
20
|
SE
15
|
SE
13
|
SE
13
|
SE
15
|
E
9
|
E
8
|
E
12
|
| Valley |
SE
19
|
SE
15
|
SE
13
|
SE
13
|
SE
15
|
E
9
|
E
7
|
E
11
|
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 |
|---|---|---|---|---|---|---|---|---|
| 900m | 48 | 39 | 39 | 40 | 36 | 32 | 31 | 32 |
| 600m | 37 | 29 | 28 | 28 | 28 | 22 | 20 | 26 |
| 300m | 34 | 27 | 25 | 25 | 25 | 18 | 16 | 22 |
| Valley | 33 | 27 | 25 | 24 | 25 | 17 | 14 | 20 |
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 900m |
1°
|
1°
|
0°
|
0°
|
0°
|
1°
|
0°
|
0°
|
| 600m |
3°
|
3°
|
2°
|
2°
|
3°
|
3°
|
2°
|
2°
|
| 300m |
5°
|
5°
|
4°
|
4°
|
6°
|
6°
|
4°
|
4°
|
| Valley |
6°
|
7°
|
5°
|
5°
|
7°
|
7°
|
6°
|
5°
|
| Freezing Level |
1,100m
|
1,000m
|
800m
|
900m
|
900m
|
900m
|
1,000m
|
900m
|
Altitude above mean sea level
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| 900m |
-8°
|
-7°
|
-8°
|
-8°
|
-7°
|
-6°
|
-7°
|
-8°
|
| 600m |
-4°
|
-3°
|
-4°
|
-4°
|
-3°
|
-2°
|
-3°
|
-4°
|
| 300m |
0°
|
1°
|
0°
|
0°
|
2°
|
3°
|
2°
|
0°
|
| Valley |
2°
|
3°
|
2°
|
2°
|
4°
|
5°
|
3°
|
1°
|
Additional weather information
Meteorologist's view
A very cold day in the hills, even at modest elevations, with a severe wind chill.
Weather
Rain, with snow above 700m, clearing in the early hours. A largely cloudy and dry day with patchy rain, falling as snow above 700m, mainly during the afternoon and evening.
Chance of cloud-free hill tops
60% becoming 30%.
Low cloud and visibility
Patchy cloud above 600m, mainly during the afternoon, becoming more persistent above 500m in the evening. Away from low cloud, visibility mainly good during the day, occasionally a few kilometres or less in rain or snow. Chance of blizzards on the tops in the early hours.
Ground conditions
Please see - https://yrwyddfa.live/
Mountain weather information
Weather
Mostly dry and cloudy through the day, perhaps the odd spot of rain or snow. Winds will strengthen with rain, sleet and snow arriving in the afternoon or evening but low confidence in timings. Feeling bitterly cold with a severe wind chill.
Chance of cloud-free hill tops
20%.
Maximum wind speed expected
East or SE 20 to 25mph gusts 30mph, increasing 40mph gusts 60mph later on ridges and summits.
Temperature
- At 800m Minus 1 or 2C.
- Valley Plus 5 or 6C.
- Freezing level 600m.
Low cloud and visibility
Rather extensive cloud above 500 or 600m. Otherwise mainly good visibility for most of the day becoming widely poor late in the day with a chance of blizzards on the tops.
Mountain weather information
Tue 27 Jan
Sunrise:
Sunset:
Heavy spells of sleet and snow. Severe conditions with southerly gales and blizzards. Becoming brighter with a few wintry showers in the afternoon. Freezing level 400m, rising to 800m later
Wed 28 Jan
Sunrise:
Sunset:
Dry and bright start then rain, sleet or snow spreading east later. Strong southerly winds. Freezing level 800m.
Thu 29 Jan
Sunrise:
Sunset:
Remaining unsettled and windy with periods of rain or hill snow.
Updated at:
Summit specific forecast
Mountain summit forecast map
Loading map…
Key
Mountain summits
Other points of interest
Cluster of multiple stations
The Eryri (Snowdonia) mountains are made up of 90 mountain peaks including the tallest mountain in Wales, Yr Wyddfa (Snowdon), standing at 1,085 metres.