Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Tuesday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Tuesday 31st March 2026
Last updated
Mon 30th Mar 26 at
3:50PM
Summary for all mountain areas
A foggy, drizzly start for most, fog to lower slopes in western coastal areas. Fog lifts with time and drizzly rain eases, bursts of sun breaking out east, and perhaps more widely afternoon. Fog and drizzle lingers longest west Scotland and south Pennines. Blustery early, easing for most; a mild feel in England and Wales.
Headline for Eryri / Snowdonia National Park
Breezy and drizzly early, improving, best east with sun breaks
How windy? (On the summits)
Northwesterly, 25-30mph at dawn, likely gusty too, up to 35mph over high tops and passes. An easing trend and shifting westerly with time, settling near 15-20mph.
Effect of the wind on you?
Fairly small most of the day, but balance affected on exposed ridges in stronger speeds and gusts in the morning; feeling quite chilly in the morning despite milder air.
How Wet?
Drizzly rain, fading during day, driest east
Drizzle and light rain most persistent and widespread during the morning on the high mountain groups nearest to coasts. Tending to fade, but patchy drizzle may linger near west coast, feeling generally damp where within cloud, making rock surfaces slippery.
Cloud on the hills?
Extensive, then rising and breaking
Blanket low cloud across the hills in the morning, from lower elevations up in west, 400-500m inland. Tending to rise to 600-700m, breaks gradually forming, but banks likely come and go on high western tops, only fleeting breaks off highest tops.
Chance of cloud free summits?
Below 10%, rising to 40% afternoon.
Sunshine and air clarity?
Cloudy and misty early, brighter moments emerge with time inland, perhaps more widely afternoon, visibility becoming good where cloud lifts and breaks.
How Cold? (at 900m)
5 or 6C. Feeling like -3 to -5C directly in the wind, particularly in the morning.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 1st April 2026
Last updated
Mon 30th Mar 26 at
3:50PM
How windy? (On the summits)
West to southwesterly 15 to 25mph, may strengthen with time from north.
Effect of the wind on you?
Fairly small, but may start to feel more noticeable and gusts affecting balance on exposed ridges.
How Wet?
Little if any rain until late
Chance of odd drizzly showers. Later in the day, greater risk of patchy rain developing from the northwest.
Cloud on the hills?
Covering higher slopes most often west
Cloud banks over higher tops, most frequent or persistent toward Cardigan Bay above 600-800m. Mostly above 800m by mid-morning near and east of A5 corridor.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Patchy sunshine breaking out here and there, perhaps more frequently for a time afternoon. Visibility good below cloud.
How Cold? (at 900m)
4C, may rise a degree. Feeling nearer -4C if exposed to wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 2nd April 2026
Last updated
Mon 30th Mar 26 at
3:50PM
How windy? (On the summits)
West-northwesterly 15-20mph.
Effect of the wind on you?
Fairly small
How Wet?
Substantially dry
A chance of spotty drizzly rain here and there, most likely north and west slopes, but most areas entirely dry.
Cloud on the hills?
Rising to just high terrain, summit breaks
In the morning, most cloud Snowdon group to Carneddau, 700m and up, a risk more extensive around dawn. Fog lifts to mostly just summits, may only briefly clear above 900m highest summits as well as western slopes.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Often or mostly sunny. Excellent visibility.
How Cold? (at 900m)
-1C, lifting to 0C.
Freezing Level
600-700m, lifting towards 800-900m.
Planning Outlook
A drop of temperature is expected across Scotland during Wednesday as a band of rain drifts slowly southwards, turning to heavy upland snow. Atlantic weather patterns and west-southwesterly winds follow behind into the start of the Easter period at least, but day-to-day detail is uncertain. Temperature and wind will be variable, periods of gales and possibly often cold over the mountains with snow and hail showers at times to lower elevations at least in Scotland, sometimes more widely, mixed with some spells of rain - precipitation generally most frequent west and northwest, though bands of heavy rain will sweep east at times. Some windows of drier and brighter conditions, as well as milder days in England and Wales, occasionally milder Scotland too.