Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Wednesday'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.
Hazy, some fog banks
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Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra 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.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 25th February 2026
Last updated
Tue 24th Feb 26 at
4:54PM
Summary for all mountain areas
Mild for the time of year; freezing levels above all summits, snow still lying on high Munros but continuing to thaw to the summits. Windy, strongest near Irish Sea and south Scotland with buffeting gusts. Rain and extensive hill cloud in west Scotland, passing east and into England and Wales with time.
Headline for Eryri / Snowdonia National Park
Driest with high cloud east and north, deteriorating; blustery
How windy? (On the summits)
South-southwesterly 35-40mph, notable gusts including to middle slopes. Greatest risk of strong wind near Anglesey, reaching up to 45mph at times.
Effect of the wind on you?
Arduous walking in exposure most of the day with considerable wind chill. Gusty as well, the strongest of which (towards Anglesey) necessitate extra effort to maintain balance.
How Wet?
Afternoon patchy rain
Some drizzle affects the summits and high western slopes of the Snowdon group. With time, a risk of patchy rain arrives from the west, may set in for an extended period on high and western slopes. East of high tops will only see patchy rain.
Cloud on the hills?
Fairly extensive western slopes
Extensive fog from middle elevations up on slopes facing Cardigan Bay, from Yr Wyddfa (Snowdon) south to Penygader. Higher bases Carneddau and Berwyn groups, some chance of clear summits early, but more widely extensive with time.
Chance of cloud free summits?
30%, lowering to 10%
Sunshine and air clarity?
Bright/sunny breaks for a time to the north and east, increasingly overcast and dull widely. Good visibility where out of cloud and rain though some haze.
How Cold? (at 900m)
6 or 7C. Feeling near or just below freezing in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 26th February 2026
Last updated
Tue 24th Feb 26 at
4:54PM
How windy? (On the summits)
Southwesterly 35-40mph, a trend towards the higher end of the range with time and reaching up to 50mph+ over high terrain.
Effect of the wind on you?
Strenuous-to-arduous walking all day, most powerful wind requiring bracing/crouching for stability; significant wind chill.
How Wet?
Rain on-and-off
Rain comes and goes, often patchy and light Carneddau and Berwyn groups. Between pulses of rain, spotty rain in the wind continues to affect slopes facing Cardigan Bay, setting in for a time later
Cloud on the hills?
Extensive over high terrain, lowest west
Fog shrouds high summits likely all day, the lowest bases on slopes facing Cardigan bay, often to 700m and at times lower. Patchier with higher bases to the east and Carneddau, small chance of breaks towards summits here during drier periods.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Often cloudy, though a period of brighter skies/sun breaks is possible. Mixed visibility, good out of fog/rain, but a haze towards the sea.
How Cold? (at 900m)
4 or 5C, may rise a degree for a time afternoon. Feeling like -8 to -10C in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 27th February 2026
Last updated
Tue 24th Feb 26 at
4:54PM
How windy? (On the summits)
Highly uncertain: variable speed and direction possible, though a trend towards strengthening westerlies, up to 35mph.
Effect of the wind on you?
Uncertain, variable conditions: effects may be small for several hours but a deteriorating trend likely.
How Wet?
Morning rain likely, becoming patchy
A broad area of rain passes across the region overnight and through the early hours, followed by some patchy rain, primarily affecting hills to the west, dry intervals too.
Cloud on the hills?
Extensive early, improving
From dawn, a sheet of cloud shrouds the hills from middle slopes upward, ragged patches to lower slopes too. A lifting and breaking trend with time, likely largely above 700m, best chance of summit breaks east of high Snowdon group peaks.
Chance of cloud free summits?
10% rising to 40%
Sunshine and air clarity?
Overcast and dull at dawn, increasingly clearing for regular sun bursts. Very good visibility, a haze towards the Irish Sea.
How Cold? (at 900m)
2 or 3C dawn, likely lowering but timing uncertain, approaching 0C into night. Feeling like -8C in strongest wind.
Freezing Level
Above the summits, may lower to just the highest terrain.
Planning Outlook
Thursday will be windy with a swathe of rain affecting all areas at some point. A low pressure core is likely to affect the country on Friday, but detail is highly uncertain: there is a risk of rain and strong wind for central and southern areas, a general cooling trend. Snow returning to the Scottish Highlands, the snowfall level lowering into nighttime. A fast-moving ridge of high pressure leads into Saturday, then a return to west-southwesterly wind with bands of rain passing west to east through the weekend into the following week. Mixed conditions are indicated in the following week, with low and high pressure competing for dominance: freezing levels will vary, high Scottish terrain often at or below freezing, the level occasionally lifting to and above tops.