Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday'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.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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.
Heavy rain
Near-constant heavy rain, sometimes torrential over the mountains, very wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Saturday 21st February 2026
Last updated
Fri 20th Feb 26 at
3:30PM
Summary for all mountain areas
Southwesterly winds strengthening during the day, becoming upland gales more widely later. Milder overall, soon rising above freezing to the highest summits in Scotland. Rain, drizzle and low cloud extensive, developing into more prolonged heavy rain from the west in the afternoon.
Headline for Eryri / Snowdonia National Park
Windy, becoming gales. Sustained heavy rain afternoon.
How windy? (On the summits)
Southwesterly 35mph in morning, but then increasing quickly afternoon to 50mph with gusts toward 60mph higher mountains mid-late afternoon.
Effect of the wind on you?
Strenuous walking conditions, making balance challenging on exposed ridges, increasingly difficult during afternoon, gusts may knock you off your feet later in day.
How Wet?
Rain and drizzle, setting in heavier afternoon
Rain on and off, persistently drizzly at least particularly western areas, more constant rain for periods, becoming heavier with time into afternoon. Patchier easternmost areas. Increasingly very wet underfoot, particularly where snow melts on higher areas, streams rising rapidly.
Cloud on the hills?
Extensive
Blanketing the hills all day, from lower elevations upward near Cardigan Bay, rarely above 400-500m inland. Furthest east, bases toward 600m at times.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull. Hazy, visibility widely poor in rain.
How Cold? (at 900m)
4 or 5C. Where exposed to stronger winds on tops, feeling like -6 to -8C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 22nd February 2026
Last updated
Fri 20th Feb 26 at
3:30PM
How windy? (On the summits)
Southwesterly 35 to 45mph, frequent squally gusts in showers, over 50mph on higher tops, tending to strengthen.
Effect of the wind on you?
Challenging conditions over higher terrain, frequent buffeting making walking arduous in exposure. Significant wind chill.
How Wet?
Showery rain
Overnight heavy rain likely clears southeast before dawn. Then showers, sometimes more frequent toward west coast, odd heavier bursts with possible brief hail.
Cloud on the hills?
Fairly extensive higher areas
Covering western mountains above 700-800m most of the time, but bases will vary in and out of showers, sometimes forming to 600m near coast. Occasional breaks higher up well inland and east.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Glimpses of sun, mostly toward east. Visibility at times very good, but reduced to occasionally poor in showers.
How Cold? (at 900m)
3C. Wind chill feeling like -10 to -13C on tops.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 23rd February 2026
Last updated
Fri 20th Feb 26 at
3:30PM
How windy? (On the summits)
Southwesterly 35 to 45mph, lowest speeds likely early afternoon, then increasing again up to 50mph toward dusk.
Effect of the wind on you?
Arduous walking conditions much of day, gusts knocking you off balance in exposure. Significant wind chill.
How Wet?
Rain may set in west
Rain on and off, persistently drizzly at least western hills, but risk setting in for more constant rain - greater likelihood of heavier persistent rain afternoon onward.
Cloud on the hills?
Extensive low cloud
Likely to cover the mountains all day, risk from mid-elevations upward, or lower toward west coast. Some breaks above 700m well inland and mainly further east.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Largely cloudy, hazy or increasingly murky west in rain. Some brighter moments in east with good visibility for a time.
How Cold? (at 900m)
3C, rising slightly toward dusk. Feeling like -10 to -13C directly in the wind.
Freezing Level
Above the summits.
Planning Outlook
West to southwesterly winds prevail during the week ahead as areas of low pressure move toward northwest Scotland whilst ridges of higher pressure occasionally nudge across southern Britain. Sustained gales over the mountains, only brief lulls. Temperatures will fluctuate above and below freezing on higher Scottish mountains, with periods of thaw and refreezing. England and Wales generally above freezing to tops with a substantial thaw of most upland snow. Frequent rainfall, often heavy over western mountains, at times showery with hail, some snow on Scottish Munros. The final days of February favour colder northwesterly air and a drop of freezing level.