Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday'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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Saturday 2nd May 2026
Last updated
Fri 1st May 26 at
2:58PM
Summary for all mountain areas
Very varied weather across the country: wettest in far northern and later eastern Scotland as cold and blustery weather penetrates southwards. Rain will later set in from south across Wales. Otherwise, areas of low cloud and pockets drizzle lifting to give patchy sunshine.
Headline for Eryri / Snowdonia National Park
Low cloud and pockets drizzle gradually clearing.
How windy? (On the summits)
Generally south, later easterly; 10mph or less.
Effect of the wind on you?
Negligible
How Wet?
Local drizzle morning; rain toward or after dusk
Largely or perhaps completely dry. However, risk pockets of fine drizzle morning between Snowdon and Lleyn peninsula. Risk rain beginning to spread north toward dusk.
Cloud on the hills?
Very extensive from dawn; will gradually lift above most or all tops.
From dawn, cloud may be below 300m between Snowdon and Lleyn peninsula, whilst elsewhere only extensive on higher slopes. A progressive improvement likely: most or all summits cloud free by afternoon - but patches reforming in rain late on.
Chance of cloud free summits?
20% rising gradually to 60%
Sunshine and air clarity?
Sunshine gradually coming through as low cloud lifts and breaks later morning or in wet Wales perhaps middle of day. Cloudy again evening. increasingly good visibility after a misty start.
How Cold? (at 900m)
6 to 11C, warmest east Wales in afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 3rd May 2026
Last updated
Fri 1st May 26 at
2:58PM
How windy? (On the summits)
Low confidence in forecast due to proximity of low centre. Wind direction varied, between 20 and possibly 35mph.
Effect of the wind on you?
Expect wind to impede ease of walking.
How Wet?
Perhaps raining most of daylight
A broad band of rain may drift or clear only slowly away, - although as it clears, heavy showers could then develop.
Cloud on the hills?
Blanket of fog although some improvement through day
Fog enveloping the hills, sometimes from lower slopes, particularly on hills accessible from and northeast of the A5. As rain clears, so cloud base will rise, perhaps to 800 to 1000m, albeit patches reforming lower down near showers.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Patchy sunshine probably extending north. Visibility frequently poor in rain, but mostly very good by afternoon.
How Cold? (at 900m)
6C: may well feel as cold as minus 4C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 4th May 2026
Last updated
Fri 1st May 26 at
2:58PM
How windy? (On the summits)
Northwesterly 15mph, perhaps 20mph higher mountains west Wales.
Effect of the wind on you?
Small
How Wet?
Very likely dry: chance brief shower
Well scattered showers may develop east Wales afternoon.
Cloud on the hills?
Clearing most or all summits during the morning
After dawn, cloud likely to be widespread on higher areas, particularly west Wales. Cloud base likely to rise through morning to clear most or all summits: although may not clear or intermittently clear above 900m.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patches of sunshine, perhaps extensive sun spreading gradually inland afternoon. Visibility very good.
How Cold? (at 900m)
3C, rising by mid afternoon to 6 to 8C, warmest east Wales.
Freezing Level
Above the summits
Planning Outlook
Lower than normal temperatures on the mountains most or all next week, particularly across the Scottish highlands where fresh snow in some areas and freezing level sometimes below 750m. Generally though, although the weather mixed, total rainfall will be fairly small and winds often light (at least until toward the weekend). Cloud will frequently be above mountain summits.