Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today'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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
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
Wednesday 22nd April 2026
Last updated
Tue 21st Apr 26 at
4:00PM
Summary for all mountain areas
Easterly winds, very gusty around higher tops and downslope to the west, strongest over England and particularly Wales, where gale-force in places. Dry overall, sunshine all day in western areas, whilst patchy cloud around eastern hills will tend to thin and retreat away to the coast.
Headline for Eryri / Snowdonia National Park
Gales over hills with powerful gusts. Dry and sunny.
How windy? (On the summits)
Easterly 40mph, with gusty spots 50mph or very locally stronger around higher mountains in the morning; lessening gradually toward 30mph, but still gusts over 40mph during afternoon-evening, may increase again later in mid-Wales.
Effect of the wind on you?
Very blustery, strenuous walking on tops, buffeting gusts challenging balance not just higher slopes, in places suddenly more difficult mobility and gusts could knock you over. Marked wind chill.
How Wet?
No precipitation expected
Cloud on the hills?
Hardly any west, early cloud east
Patchy cloud banks drifting over some hills early morning, mostly Bala and Berwyn group, some patches may roll westwards for a time, but all likely to disperse.
Chance of cloud free summits?
Soon practically certain
Sunshine and air clarity?
Sunshine most or all day west, and developing increasingly in east. Visibility good, but slight haze.
How Cold? (at 900m)
3C rising to 6C. Feeling like -5 to -10C directly in the wind, coldest in the morning.
Freezing Level
Above the summits. Possible pockets of frost sheltered spots both higher and lower slopes at dawn.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 23rd April 2026
Last updated
Tue 21st Apr 26 at
4:00PM
How windy? (On the summits)
East or southeasterly 25 to 30mph, gusts 35mph near and west of higher mountains, locally downslope especially mid-Wales.
Effect of the wind on you?
Blustery over the hills, making walking strenuous in exposure, some buffeting gusts, feeling chilly despite mild air.
How Wet?
No precipitation expected
Cloud on the hills?
Little or none
Possible patchy cloud some eastern slopes early morning, otherwise the mountains clear.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Largely sunny, possibly thin high cloud. Visibility good, some slight haze.
How Cold? (at 900m)
7 or 8C, small variation all day. Feeling like 0C if directly in the wind.
Freezing Level
Frost in sheltered valleys at dawn. Otherwise above freezing to the summits. (Valleys approach 20C afternoon).
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 24th April 2026
Last updated
Tue 21st Apr 26 at
4:00PM
How windy? (On the summits)
Southeasterly or variable, 15mph, some local gusts 20-25mph, particularly mid-Wales.
Effect of the wind on you?
Mostly small.
How Wet?
No rain expected
Cloud on the hills?
Cloud not expected
Chance of cloud free summits?
Practically certain
Sunshine and air clarity?
Extensive sunshine. Very good visibility, slight low-level haze.
How Cold? (at 900m)
11 or 12C, little change on high terrain. (Valleys start much cooler, then approach 20C especially in west afternoon).
Freezing Level
Above the summits. At dawn, slight frost inland valleys and possibly sheltered elevated hollows.
Planning Outlook
A settled spell of weather onward through late week into the weekend, with increasingly warmer temperatures on the hills, reaching 10C+ on many tops. Valleys and some sheltered higher areas will start with a risk of frost but increasingly by the afternoons many valleys will warm up toward 20C, particularly in the west. Briefly cooler air may extend back into northeastern areas over the weekend. Strong April sunshine widely across the mountains, beware risk of sunburn. Misty starts in some valleys. After a gusty easterly during midweek, the wind will drop light for most places by late this week. A settled springtime outlook is likely for next week.