Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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.
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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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
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.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 25th July 2026
Last updated
Fri 24th Jul 26 at
4:28PM
Summary for all mountain areas
Windy early, gale-force gusts in Scotland with significant wind chill. Morning rain in Scotland slips south into north England by midday, patchy sun breaks out in Scotland. Morning sun in Wales, rain reaching here through afternoon from north. Most rain on western hill groups where cloud will become extensive.
Headline for Eryri / Snowdonia National Park
Blustery; early sun, increasingly cloudy and drizzly
How windy? (On the summits)
Westerly 25 to 35mph, at times 40mph with some stronger gusts over higher northern mountains around midday hours. Easing tendency into evening towards 25mph, locally lighter.
Effect of the wind on you?
Strenuous walking and marked chill over the hills, buffeting gusts making balance challenging on exposed ridges, perhaps more widely arduous for a few midday hours.
How Wet?
Afternoon drizzly rain
A few spots of rain through morning on northwestern hills but more often dry. Through afternoon, drizzly over high tops with periods of light rain over western hills, staying generally damp into evening; patchier small amounts of drizzly rain further east.
Cloud on the hills?
Lowering to become extensive
Patchy cloud banks at first northwest areas, hills toward mid-Wales start clear, and Snowdonia summits seeing breaks for a few hours. Cloud lowers widely as midday approaches, blanketing hills to lower elevations in west, 500-700m inland/east.
Chance of cloud free summits?
80% dropping to 10%
Sunshine and air clarity?
Initially mostly sunny with good visibility, deteriorating to cloudy dull conditions, misty with poor visibility west.
How Cold? (at 900m)
11C rising to 13C. Feeling near to freezing directly in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 26th July 2026
Last updated
Fri 24th Jul 26 at
4:28PM
How windy? (On the summits)
West-northwesterly 20-30mph, with time trending more northwesterly and towards higher speeds, to 35 or 40mph.
Effect of the wind on you?
Ease of walking impacted, increasingly strenuous on high terrain with balance challenges and notable wind chill.
How Wet?
Showery rain
Often raining over high terrain of Eryri/Snowdonia NP and north and western areas. Further east, the rain more showery, but at times more frequent too; generally easing later.
Cloud on the hills?
High terrain stays shrouded
Terrain above 800m likely in cloud most or all day, more widely extensive to mid-slopes early. A few higher breaks, but also widely lowering during more showery periods. Slopes towards the west and north coasts more often shrouded.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Best bursts of sun towards east Wales. Varied visibility, very good where out of cloud and rain.
How Cold? (at 900m)
10 or 11C. Feeling at or below freezing in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 27th July 2026
Last updated
Fri 24th Jul 26 at
4:28PM
How windy? (On the summits)
Northwesterly 15-20mph, shifting southwesterly, easing briefly, rising again afternoon, to 25-30mph later.
Effect of the wind on you?
Fairly small, but ease of walking becomes affected later in the day.
How Wet?
Substantially dry
Some fine drizzle over the high tops at times when in cloud, but more often entirely dry.
Cloud on the hills?
Lifting to tops with breaks
Banks of cloud at varied elevations in the morning, some clear windows between layers possible. Through morning, mostly lifting to summit height, a few breaks from time to time, but caps also returning to the summits.
Chance of cloud free summits?
Rising to 50%
Sunshine and air clarity?
Often sunny, some high cloud coming and going. Very good visibility.
How Cold? (at 900m)
8 or 9C rising to 12C.
Freezing Level
Above the summits.
Planning Outlook
West-northwesterly winds prevail this weekend and early next week, transitioning to southwesterly through mid-to-late week, bringing spells of rain, drizzle and some showery falls; low cloud persistent across hills, particularly in the west. Lower wind speeds for Scotland on Sunday, staying quite breezy England and Wales. Rather cool this weekend and Monday, single-figures Celsius on high terrain. More prolonged heavier rain possible for western Scotland Monday-Tuesday. More humid and warm into mid and late week, especially England & Wales which could become hot later in the week. More uncertainty later in the week as a slow-moving area of low pressure is nearby, but risk areas of heavy rain and showers into next weekend as well.