Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday'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.
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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather 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
Sunday 1st March 2026
Last updated
Sat 28th Feb 26 at
4:00PM
Summary for all mountain areas
South-southwesterly upland gales, strengthening further for Wales during the day, later extending northward. Early snow on hills in the Highlands, patchier northwards, turning increasingly to rain as temperature rises, heavier rain for West Highlands. Generally wet for western England & Wales with blanket low cloud.
Headline for Eryri / Snowdonia National Park
Gales strengthening. Wet most of the day, very low cloud west.
How windy? (On the summits)
South-southwesterly 35 to 50mph, downslope gusts to north/east. Trending towards higher sustained speeds, 60mph later afternoon onward into evening.
Effect of the wind on you?
Challenging walking most of the day; considerable buffeting, including lower slopes; feeling chilly. Deteriorating further to become very difficult later.
How Wet?
Rain and drizzle most of day
Persistent drizzle mixed with periods of rain affect most mountains, wettest on slopes facing Cardigan Bay/Llyn Peninsula with a risk of extended steadier rain. Driest around Carneddau/Berwyn groups.
Cloud on the hills?
Extensive, lowest west
Covering many mountains all day, from 300-500m upward near Cardigan Bay, often extensive above 600-800m inland, highest breaks toward and north of Ogwen, also Bala and Berwyn areas.
Chance of cloud free summits?
Almost nil near west coast, to 20% north/eastward.
Sunshine and air clarity?
Overcast and dull west; best chance of glimpses of sun north and east. Good visibility locally north/east areas, but murkier west, hazy at best towards the sea.
How Cold? (at 900m)
4 or 5C. Feeling like -8 to -10C in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 2nd March 2026
Last updated
Sat 28th Feb 26 at
4:00PM
How windy? (On the summits)
South to southwesterly; speed likely to drop from risk 40-50mph at first, to around 20mph by middle of day onward.
Effect of the wind on you?
Difficult conditions around dawn likely to lessen in the morning, remaining blustery in places, but smaller effects with time.
How Wet?
Rain and drizzle slowly fading
A band of rain early in the day, may persist for a few hours, tending to ease off and break up from west, some uncertainty, may leave lingering patchy light rain and drizzle some areas.
Cloud on the hills?
Fairly extensive, improving with time
Covering many hills perhaps much of day, varied banks to some lower slopes for a few hours, higher bases north. Tending to gradually rise with some breaks onward through afternoon, mainly north.
Chance of cloud free summits?
10% rising to 30%
Sunshine and air clarity?
Cloudy likely all day, but some brighter skies and glimpses of sun may emerge from west. Visibility poor in rain, improving if dry later.
How Cold? (at 900m)
3C, dropping into night to 1C. If exposed to stronger wind, feeling like -8C early in day.
Freezing Level
Above the summits all day, then dropping close to freezing on highest tops after dark.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 3rd March 2026
Last updated
Sat 28th Feb 26 at
4:00PM
How windy? (On the summits)
Variable direction, 15-20mph in places at times, but likely often less.
Effect of the wind on you?
Mostly small.
How Wet?
A little drizzly rain
Patchy light rain or drizzle, tending to fade.
Cloud on the hills?
Risk locally persistent cloud banks
Uncertain extent of cloud, but risk shrouding the hills for several hours at least, varied banks, but likely clearer toward northwest of the region.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Largely cloudy, some brighter skies mostly toward the northwest where visibility good. Risk misty across some hills, dull where below cloud.
How Cold? (at 900m)
2 or 3C.
Freezing Level
Above the summits.
Planning Outlook
A drop of freezing level onto higher mountains develops during Monday into Monday night; weakening fronts bringing some precipitation, but fading. Higher pressure expands across the British Isles into Tuesday and stays nearby with commonly drier conditions and periods of light winds during early March, though mixed with pushes of strengthening south-southwesterlies bringing some occasional rain in from the west. Often milder air during the next couple of weeks, possibly briefly colder again by the end of the coming week.