Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Winter kit required on higher terrain
Snow cover over higher mountains. Safe progress over some terrain will require suitable footwear - possibly crampons and ice-axe where necessary.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Winter kit required on higher terrain
Snow cover over higher mountains. Safe progress over some terrain will require suitable footwear - possibly crampons and ice-axe where necessary.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 1st February 2026
Last updated
Sat 31st Jan 26 at
4:30PM
Summary for all mountain areas
Extensive low cloud and patchy areas of rain, or snow on higher mountains, merging into more constant precipitation from the west over England, Wales and southwest Scotland. Driest conditions for the coastal northwest Highlands. Improving afternoon for Wales. Variable winds, dropping fairly light Highlands.
Headline for Eryri / Snowdonia National Park
Blustery, rain sets in, snow develops on tops; clearing later.
How windy? (On the summits)
West-southwesterly 20 to 30mph, squally gusts during heavier precipitation, tending to increase generally and turn west-northwesterly later.
Effect of the wind on you?
Starting to affect comfortable walking, more strenuous over exposed higher terrain, affecting balance on ridges. Considerable wind chill.
How Wet?
Rain becomes heavy, turns to snow high tops; clearing to showers afternoon
Patchy rain up to higher tops in morning, becoming persistent and heavier at times into middle of day, turning increasingly to sleet or snow above 700m. Fading into afternoon, but a few showers with risk of hail follow in west.
Cloud on the hills?
Extensive, later rising
Covering hills widely, from mid-slopes upward or some lower elevations in west for a few hours. Base rising into afternoon, breaks starting to form to upper slopes.
Chance of cloud free summits?
10% later 30%
Sunshine and air clarity?
Overcast and dull, poor visibility in rain, very poor if in snow on tops; then some improvement later in day to very good visibility away from showers.
How Cold? (at 900m)
1 or 2C, dropping to 0C afternoon. Feeling like -10C directly in the wind.
Freezing Level
Just above highest summits in morning, but dropping to 800-900m middle of day into the afternoon.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 2nd February 2026
Last updated
Sat 31st Jan 26 at
4:30PM
How windy? (On the summits)
Southeasterly 20-25mph, shifting easterly and rising, reaching 35-45mph by dusk, likely gusty, after dark 55mph.
Effect of the wind on you?
Fairly small at dawn but gradually deteriorating, arduous conditions later with buffeting and significant wind chill.
How Wet?
Spotty light rain
Occasional spots of light rain drifting from the south, mostly affecting southern and eastern hills. Slopes near Anglesey may stay dry all day.
Cloud on the hills?
Well-broken early, filling in with time
Some cloud patches on high tops early, notably east, but many western slopes start clear. Cloud increasingly fills in across high terrain, lowest bases east Wales; slopes towards Cardigan Bay and Anglesey stay clearest.
Chance of cloud free summits?
40% lowering to 20% east
Sunshine and air clarity?
Best of sun in the morning and west, cloud building with time. Generally good visibility.
How Cold? (at 900m)
0 or -1C at dawn, lifting to +1C. Feeling like -10 to -13C in the wind.
Freezing Level
800-900m, but slightly higher on some western slopes and slight rise during day to above 1000m. High terrain stays frozen.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 3rd February 2026
Last updated
Sat 31st Jan 26 at
4:30PM
How windy? (On the summits)
East to southeasterly 20 to 35mph, very gusty in places around high tops, locally to some lower slopes in west.
Effect of the wind on you?
Blustery, in places more uncomfortable, affecting ease of walking and balance; considerable wind chill.
How Wet?
Local sleet or hill snow
Patchy snow or sleet, risk more persistent mainly mid Wales. Rain or sleet up to 500-600m, or higher near west coast.
Cloud on the hills?
Fairly extensive, higher west
Covering most higher terrain, above 500-600m in east Wales, 600 to 800m further westwards, some breaks to upper slopes west of Snowdon/Yr Wyddfa group.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely overcast, dull, locally brighter toward west coast. Hazy, poor visibility in rain/snow.
How Cold? (at 900m)
0 or -1C, up to local +1C in west. Wind chill feeling like -7 to -10C.
Freezing Level
Varied, 500m particularly eastern areas, but further west locally just above freezing point to some upper slopes.
Planning Outlook
Southeast then easterly winds will prevail during the week ahead, strong to gale force over many hills for sustained periods. From Monday into Tuesday onward, colder air temperature and lower freezing level again, leaving mountain terrain widely frozen from mid-elevations upward, or to lower slopes in eastern Scotland. Further snow will affect eastern mountains, with additional accumulations and drifting. Some periods of hill snow for England and Wales into midweek. Cold easterly patterns are expected to continue onward into mid February, though higher pressure to the north may see reduced precipitation amounts, always driest with highest cloud in west.