Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Bright sunshine
Beware of sunburn from bright spring sunshine, despite feeling cool in any breeze on higher terrain.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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
Friday 24th April 2026
Last updated
Thu 23rd Apr 26 at
3:19PM
Summary for all mountain areas
Some valley fog/mist at dawn, notably east, local frosts as well. Soon after sunrise, cloud dissipates for widespread strong sunshine and warming temperatures, many valleys approaching 20C, including Scottish Highlands; high UV levels, beware sunburn risk. Negligible wind, though a blustery start in south Wales.
Headline for Eryri / Snowdonia National Park
Chilly valleys at dawn, some mist east, soon warm sunshine
How windy? (On the summits)
Southeasterly 10-15mph, strongest winds south and particularly towards mid-Wales, gusts approaching 20-25mph.
Effect of the wind on you?
Mostly small, though blustery in exposure over high tops of mid-Wales.
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 but tending to improve.
How Cold? (at 900m)
10 or 11C, little change on high terrain. Valleys start much cooler, local frosts, 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
Thu 23rd Apr 26 at
3:19PM
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 around, thickening somewhat. Visibility good, slight low-level haze.
How Cold? (at 900m)
9 or 10C, little change all day.
Freezing Level
Above the summits. Patchy frost at dawn inland valleys and sheltered higher areas.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 26th April 2026
Last updated
Thu 23rd Apr 26 at
3:19PM
How windy? (On the summits)
Southerly or variable, 10mph or less.
Effect of the wind on you?
Negligible.
How Wet?
No rain expected
Cloud on the hills?
Likely cloud-free
Patchy mist in east-Wales valleys, this soon dissipating after sunrise for cloud-free hills. Snowdonia may be cloud-free dawn to dusk.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Often sunny, though occasionally weakened or shrouded by high cloud. Very good visibility.
How Cold? (at 900m)
9 or 10C. Starting several degrees cooler in the valleys.
Freezing Level
Above the summits.
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 and misty dawns but by the afternoons many valleys will warm up toward 20C. Briefly cooler air drifts back into northeastern areas later on Saturday, with a risk of some patchy nuisance rain here and there Sunday into Monday. Strong April sunshine widely across the mountains, beware risk of sunburn. Some uncertainty about the location of the centre of high pressure, with a risk of strong, gusty winds across England and Wales next week.