Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday'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.
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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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.
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
Friday 10th April 2026
Last updated
Thu 9th Apr 26 at
3:50PM
Summary for all mountain areas
A few morning snow flurries in west Scotland, then dry and sunny for most. Cloudier in Wales, some light afternoon rain; high cloud gradually weakening the sun more widely. Wind strengthens from the west afternoon, most notably in Scotland where reaching gale-force in exposure by evening, severe in west around dusk.
Headline for Eryri / Snowdonia National Park
Increasingly windy, gales later; afternoon light rain, cloud lowers.
How windy? (On the summits)
Westerly 10-15mph at dawn, briefly less. Shifting southerly during morning and strengthening, to 30-40mph during afternoon, strongest in west, 50mph by dusk, 60mph for a few hours after dark, moderating a little then overnight.
Effect of the wind on you?
Mostly small in morning, but with time becoming increasingly blustery in exposure, strenuous conditions with notable wind chill developing later afternoon, further deteriorating to become difficult during evening.
How Wet?
Some patchy rain afternoon
The morning and early afternoon are likely entirely dry. During afternoon, patchy rain, a mix of drizzle and some steadier rain in west; snowflakes on high terrain, mostly light in nature. Heavier rain in west into night.
Cloud on the hills?
Clear through morning, returning to high terrain at times afternoon
Patchy cloud on higher terrain in the morning, most facing Cardigan Bay/Llyn Peninsula. Cloud soon lifts and breaks after sunrise, clear hills into early afternoon, then banks returning to the summits in afternoon rain, may lower towards 600-700m in heavier moments, variable into dusk.
Chance of cloud free summits?
90%, lowering to 50%
Sunshine and air clarity?
Largely cloudy, some weak sun through high cloud with occasional brighter moments, but trending more widely cloudy with time. Very good visibility, a light early haze; poorer later where rain develops.
How Cold? (at 900m)
-1C much of the morning, rising to +1C afternoon, staying lifted into night and my rise a few degrees further for a few hours. Later, feeling like -10 to -15C in wind.
Freezing Level
700-800m at dawn, slowly lifting to the high summits in the afternoon, lifting off the summits for several overnight hours.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 11th April 2026
Last updated
Thu 9th Apr 26 at
3:50PM
How windy? (On the summits)
Southwesterly 25-30mph, gradually strengthening, 40-50mph by dusk.
Effect of the wind on you?
Fairly small at dawn, blustery in exposure, increasingly challenging conditions through afternoon and wind chill setting in.
How Wet?
Snow showers, risk hail
Showers stream in from the west throughout the day, snow to 500m, some hail mixed in as well. Frequency will vary, with more persistent showers but also drier times.
Cloud on the hills?
Mostly passing caps on high terrain
Variable cloud mostly above 700m in the morning, may be briefly more extensive at dawn, but bases lifting through the morning, breaks forming off the tops, perhaps for extended periods, but occasionally returning to the summits in showers.
Chance of cloud free summits?
Rising to 60%
Sunshine and air clarity?
Bursts of sunshine, some extended periods of sun. Variable visibility, often very good but poor in showers.
How Cold? (at 900m)
-1 or 0C, may rise slightly. Later, feeling like -15C in direct wind.
Freezing Level
800-900m, some variability, and tending to rise slightly.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 12th April 2026
Last updated
Thu 9th Apr 26 at
3:50PM
How windy? (On the summits)
South to southwesterly, uncertainty about peak speeds, likely varying 30 to 40mph, risk 50mph for a time higher tops.
Effect of the wind on you?
Expect blustery conditions, risk often arduous walking on tops, squally gusts affecting balance. Considerable wind chill.
How Wet?
Heavy showers, hail, snow
Broadly showery, locally more frequent precipitation for periods, mostly toward west in morning; heavy bursts with hail, snow at times falling toward 600m, risk of isolated thunder.
Cloud on the hills?
Varying on high tops
Most cloud often confined above 700-800m, clearing tops periodically, but briefly lower patches around 600m in showers, most frequent in west in morning.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Brief moments of bright sunshine. Visibility changing suddenly from very good to very poor or briefly appalling in showers.
How Cold? (at 900m)
1 or 2C. Wind chill feeling like -8 to -12C.
Freezing Level
1000m or above.
Planning Outlook
Showers and sunshine this weekend, windy with gales at times, and cool temperatures bringing snowflakes to some middle slopes. Variable weather regimes next week: Atlantic west-southwesterly winds likely dominant, with low pressure to the northwest of the country, bringing 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, though any snow unlikely to accumulate here. Next weekend, indications of high pressure increasingly building, bringing drier and brighter conditions with mild days, though the risk remains of occasional rain and cooler temperatures, notably in Scotland.