Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
Whiteout
Fog and lying snow over the mountains, possibly with falling or blowing snow, very disorientating. Map and compass essential, beware of unseen hazards.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Snowdrifts
Considerable lying snow over the mountains, with substantial drifting in places.
Click an icon for more information or click here for a key to all icons.
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
Whiteout
Fog and lying snow over the mountains, possibly with falling or blowing snow, very disorientating. Map and compass essential, beware of unseen hazards.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Snowdrifts
Considerable lying snow over the mountains, with substantial drifting in places.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 9th January 2026
Last updated
Thu 8th Jan 26 at
4:10PM
Summary for all mountain areas
Patchy snowfall and low cloud over the eastern Highlands & N/E Pennines, little if any reaching western Scotland where hills will be clearer, some low-level fog. Extensive fresh snow cover for Wales and Peak District, residual flurries fade, but wind remains strong; showers with hail near west coast of Wales.
Headline for Eryri / Snowdonia National Park
Windy, gales on tops morning. Showers, hail; extensive lying snow.
How windy? (On the summits)
North to northwesterly 30 to 40mph, nearer 50mph up to dawn, tending to ease slightly during daytime.
Effect of the wind on you?
Considerable wind chill and affecting ease of walking on exposed terrain; risk more challenging early in day.
How Wet?
Showers with hail, snow on tops
Expect considerable fresh lying snow from valleys upward inland following overnight falls, substantial drifts in places. Continuing light snowfall into the morning, turning to sleet or rain lower slopes, breaking into showers, some heavy near coast with hail, plus snow over hills above 400-500m.
Cloud on the hills?
Fairly extensive, rising to tops
Shrouding most higher areas in the morning, banks of cloud mid-slopes up in places. Tending to lift to higher slopes, but often capping tops in north and west.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, rare if any sun due to a veil of high cloud. Difficult navigation if in fog over snow cover and if snow blows around; visibility improves with time away from showers.
How Cold? (at 900m)
-2 or -3C. Feeling like -10C if exposed to stronger winds.
Freezing Level
500 to 600m, but terrain partly frozen into valleys inland in the morning, where snow cover persists.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 10th January 2026
Last updated
Thu 8th Jan 26 at
4:10PM
How windy? (On the summits)
North-northwesterly 15 to 20mph, strongest early morning, likely to ease and shift west later southwesterly.
Effect of the wind on you?
Mostly small, but risk noticeable wind chill in exposure on hills early in day.
How Wet?
Local showers, flurries
Risk of occasional light showers drifting in from the coast, snow flurries over hills, mostly rain spots below 500m.
Cloud on the hills?
Varied patches
Patches of cloud some slopes, may often drift over higher tops, well broken further inland. Local mist possible in valleys.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Mix of cloud and sun. Visibility very good.
How Cold? (at 900m)
-2C. Feeling like -8C if exposed to wind in morning.
Freezing Level
Much terrain frozen inland, frost into valleys in morning; then 400-500m, up to 600-700m nearest the west coast.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 11th January 2026
Last updated
Thu 8th Jan 26 at
4:10PM
How windy? (On the summits)
Southerly, strengthening rapidly up to dawn, in range 45 to 60mph much of daytime, at times 70mph high tops.
Effect of the wind on you?
Difficult conditions with frequent buffeting and powerful gusts to some lower slopes, significant wind chill.
How Wet?
Snow soon rain
Snow briefly over the hills, moving in quickly, possibly freezing rain for a time, soon becoming sleet then all rain up to higher slopes, setting in heavier over western hills in particular.
Cloud on the hills?
Extensive
Shrouding the hills widely, to lower slopes near coast and Llyn peninsula, higher bases toward north of the A5 and more eastern groups.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast and mostly dull. Visibility generally very poor.
How Cold? (at 900m)
0C rising toward +5C, small variation of temperature with height. Wind chill feeling like -10 to -15C.
Freezing Level
300 to 500m up to dawn, partly frozen into inland valleys; rising variably but perhaps quickly above freezing to high tops.
Planning Outlook
Terrain stays widely frozen away from coastal slopes this weekend, fresh extensive snow for Wales and Peak District, whilst substantial snow remains across Scottish mountains. By Sunday, southerly winds strengthen to gales - as a frontal system approaches, snow then freezing rain is likely. A rise of freezing level from the southwest - thawing develops, rising just above freezing toward all higher slopes; in England and Wales much snow will thaw - here only occasionally near freezing on highest tops in the week ahead. In Scotland next week, higher mountains often near or below freezing at 800-1000m upward. A mix of rain and high-level snowfall, often windy through mid-month.