Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday'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
Friday 20th February 2026
Last updated
Thu 19th Feb 26 at
4:30PM
Summary for all mountain areas
Extensive gale-force southwesterlies. A rise of freezing level toward higher tops in Scotland, where early hill snow soon turns mostly to rain. Lifting above freezing to highest tops in England & Wales by dawn, a few hours of heavy rain. Clusters of heavy showers follow into all western areas with hail, a chance of thunder.
Headline for Eryri / Snowdonia National Park
Upland gales. Wet much of day, heavy rain for periods.
How windy? (On the summits)
Southwesterly 45 to 60mph, speeds peak for a few hours in morning, but ongoing 40-50mph with powerful squally gusts; a westerly shift into afternoon.
Effect of the wind on you?
Challenging conditions all day with significant wind chill; maintaining stability requires constant effort/crouching.
How Wet?
Often raining, heavy at times, with hail afternoon
A swathe of persistent rain from dawn into early morning, widely heavy, most sustained toward west. Breaking into showers, but these clustering again into afternoon to more prolonged rain at times, heavy bursts with hail, risk isolated thunder. Wet underfoot where snow melts.
Cloud on the hills?
Fairly extensive
Cloud shrouds high terrain and slopes to the west and south down to the middle slopes most of the day. Cloud at times well broken and higher bases towards Carneddau, but filling in here too during rain.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Mostly cloudy but some bright/sunny breaks will come and go, best east. Variable visibility, good out of cloud and rain, but some haze too.
How Cold? (at 900m)
Rising from before dawn to 4C. Feeling like -7 to -10C in direct wind.
Freezing Level
Above the summits by dawn onward; beware of still frozen terrain on tops.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 21st February 2026
Last updated
Thu 19th Feb 26 at
4:30PM
How windy? (On the summits)
Southwesterly 35 to 45mph, lowest speeds early morning, but increasing through day toward 50-60mph mid-late afternoon.
Effect of the wind on you?
Strenuous walking conditions, making balance challenging on exposed ridges, increasingly difficult during afternoon.
How Wet?
Rain and drizzle
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.
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
Thu 19th Feb 26 at
4:30PM
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?
Frequent rain, hail
Overnight heavy rain likely clears southeast around or before dawn. Then showers, at times feeling more continuous, bursts of rain, some heavy with hail, particularly toward west coast.
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 or lower 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.
Planning Outlook
Southwesterly winds brings milder conditions into this weekend - lifting above freezing to tops in England and Wales with substantial thawing, and generally higher freezing levels in Scotland; periods of thawing to Munro summits will occur but also further snowfall and refreezing on higher terrain during the day-to-day variability of precipitation and freezing levels onward into early next week. Likely colder later next week, back below freezing on higher terrain for a run of days. Often windy with periods of upland gales. Some spells of heavy rain over all western hills and low cloud frequently covering the hills.