Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday'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.
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.
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
Saturday 31st January 2026
Last updated
Fri 30th Jan 26 at
4:30PM
Summary for all mountain areas
Winter conditions on most high mountains; deep snow and large drifts in central/east Scotland, whiteout conditions in fog. Mostly dry NW Scotland. Morning rain in south Scotland and England trends patchy, often dry south Pennines. Often raining in Wales, most on western slopes. Freezing levels rise towards upper slopes.
Headline for Eryri / Snowdonia National Park
Often raining and blustery, wind easing slightly with time
How windy? (On the summits)
Southerly 30-35mph, gradually shifting southwesterly and easing to 20-30mph.
Effect of the wind on you?
Blustery in exposure, walking strenuous early in the day, trending towards lighter effects but winds likely remain uncomfortable in exposure.
How Wet?
Often raining, most in the west
Periods of rain will come and go through the day, the heaviest and most frequent falls on western slopes. Lowest rain totals will be around and east of Carneddau.
Cloud on the hills?
Fairly extensive, local improvements, best in the east
Cloud shrouds the high terrain of Eryri NP (Snowdonia) most of the day, extensively to middle slopes early. A slight lifting trend, some higher breaks possible, though variably lowering again.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Some glimpses of sun here and there but often cloudy. Mixed visibility, good where out of rain but often poor in western areas in fog and rain.
How Cold? (at 900m)
1C most of the day, may locally rise a degree.
Freezing Level
Likely just highest summits, may variably lift off the summits. Beware frozen ground/icy surfaces above 700-800m all day.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 1st February 2026
Last updated
Fri 30th Jan 26 at
4:30PM
How windy? (On the summits)
West-southwesterly 10-20mph. Some variability later in the day with stronger winds.
Effect of the wind on you?
Fairly small most of the day, though conditions may become quickly changeable late with impeding wind.
How Wet?
Patchy rain
Patchy light rain affects many hills throughout the day. Most frequent with heavier bursts in the west. A few drier hours are possible though rain will return later.
Cloud on the hills?
Fairly extensive but variable
Fog shrouds high terrain most or all day. Bases may lower to middle slopes locally in spots of rain (western slopes), but higher breaks possible as well, likely best around Berwyn group.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Glimpses of sun here and there, but often cloudy. Generally good visibility but reduced in rain.
How Cold? (at 900m)
1 or 2C.
Freezing Level
May just touch the highest summits in the morning, lifting off the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 2nd February 2026
Last updated
Fri 30th Jan 26 at
4:30PM
How windy? (On the summits)
Southeasterly 20-25mph, shifting easterly and rising, reaching 35-45mph by dusk, likely gusty, tops speeds to 55mph.
Effect of the wind on you?
Fairly small at dawn but soon 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%
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
May just touch the summit of Yr Wyddfa (Snowdon), may be locally lower but lifting with time.
Planning Outlook
Unsettled weather persists through the late weekend and into next week: a southerly flow is dominant through Monday, lifting freezing levels and brining precipitation to most mountain groups through the early week. The Munros will likely stay below freezing; precipitation will continue to fall as snow on high terrain: snowdrifts from the Cairngorms to central and southern Highlands with a continued risk of flooding here. Gales are likely as well. Southeasterly winds will tend to re-establish later in the week, lowering freezing levels and drawing cloud and precipitation into the Pennines and eastern Scotland, the snow level dropping to middle elevations with time. Cloud and precipitation more patchy in the west with the brightest skies northwest of high summits.