Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Thursday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Bright sunshine
Beware of sunburn from bright spring sunshine, despite feeling cool in any breeze on higher terrain.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Bright sunshine
Beware of sunburn from bright spring sunshine, despite feeling cool in any breeze on higher terrain.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 23rd April 2026
Last updated
Wed 22nd Apr 26 at
4:00PM
Summary for all mountain areas
Gusty easterly winds for England, Wales and southern Scotland, but warmer and less windy overall than recent days. Light winds for much of the Highlands. Some early low-level mist, mostly toward eastern Pennines, but the mountains clear with bright sunshine widely; high UV levels, beware sunburn.
Headline for Eryri / Snowdonia National Park
Strong gusty and cool wind. Sunshine, warm valleys.
How windy? (On the summits)
East or southeasterly 25 to often 30mph around higher mountains, gusts 35-40mph near and west of high tops and through passes, locally downslope especially mid-Wales, lessening a little toward evening.
Effect of the wind on you?
Blustery over the hills, making walking strenuous in exposure, buffeting gusts will affect balance not just on highest terrain. Marked wind chill 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?
Extensive sunshine. Visibility good, some slight haze.
How Cold? (at 900m)
7 or 8C, small variation all day. Feeling like 0 to -3C 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
Wed 22nd 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
Odd patches of light mist in sheltered inland and eastern valleys at dawn, soon dissipating after sunrise for cloud-free hills.
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.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 25th April 2026
Last updated
Wed 22nd Apr 26 at
4:00PM
How windy? (On the summits)
Variable direction mostly 10mph or less.
Effect of the wind on you?
Negligible.
How Wet?
No rain expected
Cloud on the hills?
None expected
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Extensive sunshine, thin high cloud may thicken to cover the sky. Visibility good, slight low-level haze.
How Cold? (at 900m)
Around 10C, little change all day.
Freezing Level
Above the summits. Patchy frost at dawn inland valleys and sheltered higher areas.
Planning Outlook
A generally dry spell of weather continues into the weekend and next week, with mostly light winds and pleasantly warm temperatures, reaching 10C+ on many tops. Valleys and some sheltered higher areas will see some frosty dawns but by the afternoons many valleys will warm up toward 20C. Briefly cooler air drifts back into northeastern areas later Saturday. Strong April sunshine widely across the mountains, beware risk of sunburn. Misty starts in some valleys.