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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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.
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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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 22nd January 2026
Last updated
Wed 21st Jan 26 at
4:18PM
Summary for all mountain areas
Gales in north England and Scotland, severe on the high Munros, gusting to storm force in the north; severe wind chills. Frequent or persistent rain across most mountains, falling as snow onto the high Munros from dawn, the snow level lowering with time; snow will be heavy with whiteout conditions in east Scotland.
Headline for Eryri / Snowdonia National Park
Patchy rain and often cloudy; blustery with wind chill
How windy? (On the summits)
Southeasterly 30 to 45mph, stronger gusts in places around high tops and downslope to west; strongest northern areas. Wind will start to ease and direction will vary after dark.
Effect of the wind on you?
Walking often strenuous or arduous, at times challenging in exposure with considerable buffeting, which may require bracing for stability. Significant wind chill.
How Wet?
Patchy rain, more later in the day
Patchy rain on and off into the Berwyn group and east Snowdonia, amounts mostly small, through morning. Rain reaches more widely across the region with time, the heaviest fall on southern/eastern aspects.
Cloud on the hills?
Variable, fairly extensive on high terrain
Often capping higher slopes, most persistent mid-Wales and east, but bases varying. Highest bases northwest Snowdon group, some tops may occasionally clear but cloud banks likely to return.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, some brighter moments western areas, sun may briefly break through. Visibility variable, at times good but turning poor in rain.
How Cold? (at 900m)
2 or 3C. Wind chill feels as cold as -13C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 23rd January 2026
Last updated
Wed 21st Jan 26 at
4:18PM
How windy? (On the summits)
East-southeasterly 35 to 45mph, stronger gusts around high tops and downslope. Strengthening afternoon.
Effect of the wind on you?
Strenuous to arduous walking with considerable buffeting, may become challenging with time. Significant wind chill.
How Wet?
Rain/sleet mostly afternoon
A little rain on and off, amounts mostly small, but increasingly frequent through afternoon, falling as snow on the tops and sleet across high terrain.
Cloud on the hills?
Extensive over tops and east slopes
Often capping higher slopes, most persistent mid-Wales to middle slopes but bases varying. Highest bases northwest Snowdon group, clearing above tops occasionally and western slopes often clear.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Overcast, often dull on high tops and east slopes. Visibility good away from cloud and precipitation but some haze likely.
How Cold? (at 900m)
0 or 1C. Wind chill feels as cold as -15C.
Freezing Level
900-1000m, some variability but unlikely below 800m at any point.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 24th January 2026
Last updated
Wed 21st Jan 26 at
4:18PM
How windy? (On the summits)
Southeasterly 40 to 55mph, powerful gusts in passes and downslope to NW; top speed may fluctuate during day.
Effect of the wind on you?
Challenging conditions; walking and balance difficult in exposed areas, buffeting gusts lower down; significant wind chill.
How Wet?
Intermittent rain, snow tops
Rain on and off, most frequent eastern hills, falling as sleet or snow on higher tops, mostly above 700m. Patchier small amounts westward.
Cloud on the hills?
Lowest east, some breaks west
Covering many higher tops all day, lowest bases around Bala group, around 500-600m. Breaks toward some upper slopes nearer to western coasts.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, locally brighter west, where visibility good if dry. Poor visibility in rain, or very poor if in snow on high tops.
How Cold? (at 900m)
0C. Directly in the wind feeling like -15C.
Freezing Level
Around 800m, but some western high slopes may be just above freezing point.
Planning Outlook
Sustained gale force easterlies over most mountains into the weekend, powerful gusts downslope toward west; severe chill factor. Colder air and lowering freezing level moves into Scotland on Friday, much mountain terrain then frozen into the weekend and early next week. Substantial snowfalls over eastern Scottish hills later this week, drier to the west. Dropping just below freezing on high tops in England and Wales - a mix of rain and high level snow, turning colder further south over the weekend, with freezing level dropping to the southern Pennines summits next week. Circulating low pressure and cold air into next week, with further snowfalls likely. Lower wind speeds early in the new week, but then likely increasing E-SE'ly again.