Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Thursday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow
Snowfall continuous or frequent over the mountains, beware of conditions becoming challenging on higher terrain. At lower elevations falling as rain.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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.
Snow
Snowfall continuous or frequent over the mountains, beware of conditions becoming challenging on higher terrain. At lower elevations falling as rain.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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
Thursday 8th January 2026
Last updated
Wed 7th Jan 26 at
4:15PM
Summary for all mountain areas
Fairly benign conditions, breezier in northern Scotland. Local snow flurries, patchy cloud and some sun. A developing system to the southwest moves into Wales with heavy snow setting in increasingly widely later, extending into the Peak District by evening, accompanied by gales.
Headline for Eryri / Snowdonia National Park
Wind increasing ahead of snow setting in evening onward.
How windy? (On the summits)
Westerly at first 20mph, soon often less, variable direction. Becoming easterly by dusk, rapidly 30-50mph evening, turning northerly into night.
Effect of the wind on you?
Mostly small during daylight. Deteriorating quickly into the evening.
How Wet?
Patchy light snow, heavy snow after dark
Occasional snow flurries on tops, sleet or rain to mid-slopes. Toward evening and into night, increasingly persistent and heavier snow developing to lower elevations, greatest amounts east.
Cloud on the hills?
Varied cloud and fog
Patchy cloud around some higher tops, possible fog some valleys also. Later cloud banks developing more widely over hills.
Chance of cloud free summits?
50%
Sunshine and air clarity?
High cloud thickening across the sky. Visibility very good in morning, possible haze or mist lower down.
How Cold? (at 900m)
-1 or -2C. Starting to feel colder up to dusk as wind increases, wind chill -10C after dark.
Freezing Level
700 to 800m, partly frozen terrain lower down, slight frost from dawn inland valleys. Toward evening dropping to 200-400m, then to most lower slopes later evening.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 9th January 2026
Last updated
Wed 7th Jan 26 at
4:15PM
How windy? (On the summits)
North to northwesterly 25 to 40mph, risk over 50mph up to dawn.
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?
Snow fading, local showers
Expect considerable fresh lying snow from valleys upward inland following overnight falls, which may continue as light snow into the morning, turning to sleet or rain lower slopes, breaking into showers.
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, visibility may improve 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 may persist.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 10th January 2026
Last updated
Wed 7th Jan 26 at
4:15PM
How windy? (On the summits)
North-northwesterly 15 to 25mph.
Effect of the wind on you?
Fairly small, but risk noticeable wind chill in exposure on hills.
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.
Freezing Level
Much terrain frozen inland, frost into valleys in morning; then 400-500m, up to 600-700m nearest the west coast.
Planning Outlook
Terrain remaining widely frozen into the weekend, extensive deep snow cover for Highlands, less nearer the central belt. A fresh good covering for Wales and south Pennines from Thursday night too. Quiet weather for Saturday daytime. Then into 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 - some thawing develops, rising just above freezing toward higher slopes; more pronounced thawing in England and Wales to the tops. Uncertain patterns next week, colder air may return across Scotland, whilst further south often generally milder. Some further hill snow mainly in Scotland.