Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday'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.
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.
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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.
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.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 7th June 2026
Last updated
Sat 6th Jun 26 at
4:46PM
Summary for all mountain areas
Scotland: Strong and gusty south-westerly winds will drive hill fog and frequent rainfall across western mountains, setting in during afternoon. Rainfall patchier across eastern hills with higher bases. England and Wales: Windy with patchy light rain onto western hills, becoming more widely damp or wet through the day.
Headline for Eryri / Snowdonia National Park
Windy with low cloud and a little patchy rain. Becoming wetter in the afternoon.
How windy? (On the summits)
Southwesterly 30-40mph, strong gusts over tops to 45mph, possibly stronger.
Effect of the wind on you?
Walking strenuous, including lower slopes early, and often arduous over tops with considerable wind chill.
How Wet?
Drizzly rain west, will deteriorate
Some spotty rain drifting onto western slopes from time to time, perhaps a fine drizzle on high terrain in the early hours. More frequent and heavier rain developing from mid-afternoon.
Cloud on the hills?
Clinging to high west slopes
May be fairly extensive from middle slopes up in the morning, to the lower slopes west of high terrain. Lifting, likely largely above 700m, perhaps clearing summits of Berwyn group and Carneddau, but highest summits will struggle to clear.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Weak sunshine through high cloud, but becoming overcast. Good visibility though a haze over the sea.
How Cold? (at 900m)
7 or 8C, may rise to 9C Carneddau. Feeling near or below freezing in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 8th June 2026
Last updated
Sat 6th Jun 26 at
4:46PM
How windy? (On the summits)
Southwesterly 15 to 25mph.
Effect of the wind on you?
Fairly small effect on walking, but feeling blustery and a noticeable chill on exposed high terrain.
How Wet?
Rain then odd showers
A band of rain clears eastward around dawn, briefly heavy. Then a scattering of showers, risk some more frequent in west later.
Cloud on the hills?
Often capping western tops
Varied cloud banks often over western tops above 800m, some lower patches in showers. Some breaks to tops more often north and east Carneddau to Bala.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Brief bursts of sun. Visibility good away from showers and below cloud.
How Cold? (at 900m)
4 or 5C. Feeling below freezing directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 9th June 2026
Last updated
Sat 6th Jun 26 at
4:46PM
How windy? (On the summits)
West to south-westerly 20 to 30mph, lifting to 35 to perhaps 40mph at times across the tops.
Effect of the wind on you?
Be prepared for very blustery conditions and a cold feel for the time of the year. Perhaps fairly arduous tops at times.
How Wet?
Frequent showers
Frequent precipitation through the day, in the form of shower after shower feeding in across the hills. Some hail mixed in with the risk of thunder inland.
Cloud on the hills?
Frequently covering upper slopes
Fairly extensive above 500-700m at first, but bases rising to become mostly around 700-900m afternoon, perhaps some breaks to tops, mainly well inland.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Often cloudy, patchy sun best in the east. Visibility often poor due to rain.
How Cold? (at 900m)
3C lifting to 5C
Freezing Level
Above the summits
Planning Outlook
The unsettled period of weather will persist over the coming week with low pressure area centres tracking just to the northwest of Scotland, allowing south-westerly winds to prevail. Rainfall often showery in nature, but coming in frequently to western mountains with the greatest falls for western Scotland. Chilly and windy at times; freezing level touching highest tops Scotland on Tuesday and Wednesday, when showers will fall as snow over the tops. Temperatures trending milder again next weekend, pressure may begin to rise in the south to give drier weather more widely.