Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Wednesday'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.
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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.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 8th April 2026
Last updated
Tue 7th Apr 26 at
4:09PM
Summary for all mountain areas
Light wind and warm England and Wales; mostly clear hills and often sunny; some haze weakens visibility, notably Pennines. Some hill-cloud lingers in Lakeland. Morning cloud and summit drizzle west/central Scotland, cloud moves east but an improving trend; wind strengthens northwest, cooler here too.
Headline for Eryri / Snowdonia National Park
Warm and often sunny, patchy hill cloud north and west
How windy? (On the summits)
Westerly 5 to 15mph, trending southwesterly with time, starting to strengthen later, 20mph over tops in the evening with stronger gusts.
Effect of the wind on you?
Small, but becoming blustery in exposure later in the day.
How Wet?
No rain expected
Cloud on the hills?
Some patchy cloud, mostly north and west, often clear
Mist in some valleys from dawn, mostly east Wales, possible patches of cloud around some hill slopes, soon lifting and mostly dispersing. Variable patches of cloud drifting onto western slopes and high terrain, mostly above 700m, occasionally more extensive on high briefly, most likely north and west.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Often sunny but some high cloud around, also some hill cloud occasionally blocking the sun, particularly north and west. Visibility good but a light haze around.
How Cold? (at 900m)
10 to 12C, little change with added height, and several degrees cooler in the valleys at dawn.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 9th April 2026
Last updated
Tue 7th Apr 26 at
4:09PM
How windy? (On the summits)
Northwesterly 30-35mph, though westerly early in the day. Sudden strong gusts probable much of the day.
Effect of the wind on you?
Strenuous walking in exposure most of the day with notable wind chill. Sudden strong gusts challenging balance at times.
How Wet?
Several hours of rain, some showers later
Drizzle on the high slopes at dawn, rain setting in for several hours through morning. Breaking afternoon, perhaps a dry spell, but then followed by scattered showers, falling as snow above 700m.
Cloud on the hills?
Fairly extensive during rain, breaking through afternoon
Fairly extensive over high terrain in the morning, lowest bases in the west, to 500m during midday/afternoon rain. Lifting and breaking later, mostly above 800-900m, clear summits for periods, and trending towards clearer conditions into evening.
Chance of cloud free summits?
30%, rising to 60% through afternoon
Sunshine and air clarity?
Mostly cloud early with poor visibility in rain. Sunshine breaking out afternoon with very good visibility, best in the east.
How Cold? (at 900m)
5 or 6C from dawn, cooling to 0C. Feeling like -10C in direct wind.
Freezing Level
Above the summits at dawn, lowering to the summits with time, reaching 900m around evening.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 10th April 2026
Last updated
Tue 7th Apr 26 at
4:09PM
How windy? (On the summits)
Southwesterly 15mph at dawn, shifting southerly and gradually strengthening, 40-50mph by dusk, strongest west.
Effect of the wind on you?
Fairly small early, walking increasingly impeded for challenging conditions and significant wind chill by dusk.
How Wet?
Some patchy rain
Occasional patches of rain drifting from the west, mostly welly scattered but may be more frequent for a few hours later morning. More often not raining.
Cloud on the hills?
Mostly just high tops, more in afternoon
Banks of cloud on higher terrain in the morning, most facing Cardigan Bay/Llyn Peninsula, odd lower patches too. Cloud lifts and breaks after sunrise, likely clear hills for a time, caps grazing high tops, more often over high terrain afternoon.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Largely cloudy, some weak sun through high cloud with occasional brighter moments east. Good visibility.
How Cold? (at 900m)
-1C from dawn, rising to +2 or 3C, staying lifted for several hours into night. Later, feeling like -10 to -13C in wind.
Freezing Level
800-900m at dawn, slowly lifting to clear the summits through afternoon.
Planning Outlook
Variable weather regimes in the extended forecast. Atlantic west-southwesterly winds will be dominant, with low pressure to the northwest of the country, brining cloud, rain, and mild temperatures, often followed by sun, showers, and cooler temperatures; rain will be increasingly common to the high Munros, but the snowfall level will lower too during periods of cooler weather, and perhaps to high Lakeland fells too, though any snow unlikely to accumulate here. In the longer term, indications of high pressure increasingly building from the southwest, brining drier, brighter, and milder conditions to England and Wales and occasionally Scotland too, though the risk of occasional rain and cooler temperatures remains.