Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Thursday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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.
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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of 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 26th February 2026
Last updated
Wed 25th Feb 26 at
4:27PM
Summary for all mountain areas
Gale-force southwesterlies, strengthening to be severe on higher mountains. Rain increasingly persistent from the west, some heavier falls setting in for periods combined with lowering cloud over the hills. Near freezing on higher Scottish tops, where some snow falls for a time.
Headline for Eryri / Snowdonia National Park
Upland gales. Rain increasingly persistent, heavier.
How windy? (On the summits)
Southwesterly, strengthening in morning 40 to 55mph, gusts over 60mph higher mountains middle of day into afternoon. Then lessening gradually after dark.
Effect of the wind on you?
Arduous walking all day on the hills, most powerful wind requiring bracing/crouching for stability, on higher exposed terrain gusts may knock you over; significant wind chill.
How Wet?
Rain on-and-off, becoming persistently heavier.
Rain comes and goes in morning, often patchy and light toward Berwyn group. Between pulses of rain, spotty rain in the wind continues to affect slopes facing Cardigan Bay. More prolonged heavier rain increasingly sets in from west by middle of day into afternoon.
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 and some sun through high cloud early in day, mainly in east. Mixed visibility, good out of fog/rain, but a haze towards the sea.
How Cold? (at 900m)
4 or 5C, rising slightly 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
Wed 25th Feb 26 at
4:27PM
How windy? (On the summits)
Uncertain - direction and speed may vary considerably, risk strengthening north to northwesterly 25-30mph.
Effect of the wind on you?
Uncertain, variable conditions: effects may be small for several hours but a deteriorating trend possible.
How Wet?
Periods of rain
High uncertainty - rain likely affecting most hills at some point through the day, some dry moments too, but also a risk of setting in more widely for several hours.
Cloud on the hills?
Extensive, may vary
From dawn, a sheet of cloud shrouds the hills from middle slopes upward, ragged patches to lower slopes too. A lifting and breaking trend away from rain, but if rain lingers or returns, cloud widely lower.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Fairly cloudy, a veil of high cloud even if skies do brighten for a time. Visibility poor in rain, but some improvements at times possible.
How Cold? (at 900m)
2 or 3C, lowering to near 0C into night. Feeling like -8C in strongest wind.
Freezing Level
Above the summits, may lower to just the highest terrain after dark.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 28th February 2026
Last updated
Wed 25th Feb 26 at
4:27PM
How windy? (On the summits)
Variable then W-NW'ly 10 to 20mph. Becoming SW'ly 25mph later afternoon. Risk 40-50mph into night.
Effect of the wind on you?
Fairly small, but in places more blustery occasionally, feeling chilly. Deteriorating onward after dark.
How Wet?
Largely dry during day
Possible brief showers in morning, snow flurries above 800m, likely to fade. Onward into night, risk of rain moving in from west.
Cloud on the hills?
Likely clearing
Cloud banks may cover some higher slopes in morning, likely to lift and largely clear.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Mostly good amounts of sun, some patchy cloud early in day. Visibility excellent.
How Cold? (at 900m)
0 to 2C. Feeling like -5 to -7C if exposed to stronger breeze on hills.
Freezing Level
900 to 1000m or rising just above.
Planning Outlook
A changeable southwesterly regime continues through the weekend into early next week. Colder for a time with a drop of freezing level Friday into Saturday allowing some refreezing of higher mountain terrain mainly in Scotland, the snowpack on high mountains consolidating following recent thawing. Milder air and thawing returns into Sunday, accompanied by rain and upland gales. During next week, higher pressure is expected to develop around the British Isles, bringing quieter weather, drier for most with lighter winds. Some fronts may continue to graze northwest Scotland with rain and stronger winds locally for a few more days. Temperatures tending to be on the milder side during early March, but some frosts into valleys at times.