Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
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.
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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Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
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.
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 4th April 2026
Last updated
Fri 3rd Apr 26 at
4:23PM
Summary for all mountain areas
A fine start for much of Highlands, a lull in wind, but snow moving in from south, setting in widely afternoon; snow to low elevations, then abruptly rain to tops in southern Highlands later. Rapidly strengthening gales for England & Wales, becoming stormy, extending across Scotland afternoon into evening.
Headline for Eryri / Snowdonia National Park
Storm-force winds developing. Drizzly rain, heavy by evening.
How windy? (On the summits)
Southerly, soon increasing from 20mph up to dawn, to 50-60mph during morning, then early afternoon 70-80mph higher mountains, strongest gusts later in day 90-100mph. Powerful damaging gusts also to lower slopes later in day.
Effect of the wind on you?
Small just at first, but soon rapidly deteriorating - any mobility increasingly difficult onward into middle of day and afternoon, gusts could blow you over even at mid-heights. Significant wind chill.
How Wet?
Rain and drizzle, heavy rain by evening
Patchy rain soon develops to be persistent for a time, leaving drizzly conditions in western areas much of the day, steady rain continuing for periods. Fading out in east. By evening, intense heavy rain for a time. Into night, hail showers, snow to 600m.
Cloud on the hills?
Fairly extensive, lowest west coast
Patchy cloud likely soon filling in widely over the mountains, down to lower slopes for a time in west coastal areas, base nearer 600m toward Ogwen. Western tops stay often covered. Higher breaks Carneddau to Bala afternoon.
Chance of cloud free summits?
10% west, to 50% north/east afternoon.
Sunshine and air clarity?
Largely overcast, dull or murky for a time. Visibility good at first mainly in north, becoming poor, may improve during afternoon inland.
How Cold? (at 900m)
1C at first, rising to 5C in morning, then lowering by evening, to 0 or -1C after dark. Feeling like -10C as wind strengthens.
Freezing Level
Near highest tops up to dawn, but soon rising well above summits. Into night, rapidly dropping back toward 700-800m.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 5th April 2026
Last updated
Fri 3rd Apr 26 at
4:23PM
How windy? (On the summits)
Severe gales overnight ease before dawn, then 30 to 40mph, tending to ease a little during afternoon.
Effect of the wind on you?
Strenuous walking conditions, buffeting in exposure, gradually improving but still blustery. Considerable wind chill.
How Wet?
Showery hail and snow
A scattering of showers, most frequent over west coastal areas early in day, extending further inland during morning, brief heavy bursts with hail; snow mostly above 500m by noon, rain lower down.
Cloud on the hills?
Varying on high tops
Cloud banks drifting over higher slopes, most often toward west coast above 700-800m, briefly lower in showers. Breaks above tops away from showers.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Bursts of bright sunshine and very good visibility, but briefly very poor in showers.
How Cold? (at 900m)
-2C rising to 0C. Feeling like -10 to -13C in the wind.
Freezing Level
700m from dawn, rising to 900m in afternoon or slightly higher later in day.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 6th April 2026
Last updated
Fri 3rd Apr 26 at
4:23PM
How windy? (On the summits)
Southerly 20 to 30mph, strongest on mountains nearest west coast.
Effect of the wind on you?
Affecting ease of walking on some exposed terrain, gusty in places around higher western tops.
How Wet?
Rare if any light rain
Substantially or completely dry. Chance of odd spots from thicker high cloud, mainly in west up to middle of day.
Cloud on the hills?
Mostly little
Patchy cloud over some western slopes for a time in the morning, but lifting and clearing.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine and a veil of high cloud. Visibility very good, slight haze may develop.
How Cold? (at 900m)
0 or -1C from dawn, rising to 4C afternoon. Feeling like -7C directly in wind early in day, then -2C afternoon.
Freezing Level
800-900m at first, plus slight frost some valleys around dawn. Rising above freezing to highest tops by noon.
Planning Outlook
Winter mountain conditions for Easter Sunday - all mountain tops sub-zero all day, above 600-700m in Scotland, 800m in England and Wales - hail and snow showers with gales bringing severe chill factor. Milder southerlies develop during Monday, dry and many hills clear with hazy sun, but gusty wind, risk of gales mainly west coastal mountains of Scotland. Quite warm by Tuesday, but strong to gale force south-southeasterly winds; dry for many, rain encroaching into western Scotland, thawing of recent snow. Scotland likely remains changeable, often windy later in the week, rain at times, varying temperatures, at times below freezing on higher Munros. Often drier and lighter winds for England and Wales.