Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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
Friday 3rd April 2026
Last updated
Thu 2nd Apr 26 at
3:45PM
Summary for all mountain areas
Cold with showery snow in the Highlands, also hail in north. Varied winds, blustery in northern Scotland, moderating for a time central Highlands. In England & Wales, a swathe of gales likely affects the mountains, but still some uncertainty about the northward extent; rain and drizzle, plus low cloud covering many hills.
Headline for Eryri / Snowdonia National Park
Gales likely over mountains. Rain and low cloud west.
How windy? (On the summits)
Southwesterly, after overnight gales, a possible brief lull around dawn to 25mph or less, but likely to rapidly increase again to 50mph in morning, risk powerful gusts 60mph+ near high tops, elevated passes and locally downslope to east. Lessening only later in daytime.
Effect of the wind on you?
Likely deteriorating soon to arduous walking conditions, making balance challenging, buffeting gusts could knock you off your feet in exposed spots. Considerable wind chill.
How Wet?
Rain most frequent west
Rain comes and goes over most hills throughout the day, typically light and patchy in nature, through some heavier bursts over western hills. Easing off toward Berwyn and Bala hills for periods.
Cloud on the hills?
Extensive, local breaks north/east
Covering western tops much of day, and blankets hills to middle slopes or lower in the morning; higher bases to 600m or above near/north of the A5. Bases tending to rise with some breaks toward tops in north and east afternoon.
Chance of cloud free summits?
10% west, to 30% afternoon north/east.
Sunshine and air clarity?
Overcast and dull, a few glimpses of sun around Carneddau mainly into afternoon, where visibility then good, but generally poor around rain.
How Cold? (at 900m)
4 or 5C, rising slightly higher mid-Wales. Feeling as cold as -10C in strongest wind.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 4th April 2026
Last updated
Thu 2nd Apr 26 at
3:45PM
How windy? (On the summits)
Southerly, soon increasing from 20mph up to dawn, to 50-60mph before noon, then in afternoon 70mph+ higher mountains.
Effect of the wind on you?
Small just at first, but soon deteriorating - any mobility increasingly difficult onward into middle of day and afternoon.
How Wet?
Rain and drizzle
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. By evening, heavier rain for a time. Into night, hail showers, snow to 700m.
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?
20% 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 later, to 0C after dark. Feeling like -10C as wind strengthens.
Freezing Level
Near highest tops up to dawn, but soon rising well above summits. Into night, dropping back toward 900m.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 5th April 2026
Last updated
Thu 2nd Apr 26 at
3:45PM
How windy? (On the summits)
Westerly 40mph from dawn, easing gradually to 25-30mph afternoon, or less later in daytime.
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 mixed in over tops, mostly above 500m by noon.
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)
-3C rising to 0C. Feeling like -10 to -13C in the wind.
Freezing Level
600m from dawn, rising to 900m afternoon.
Planning Outlook
A storm system moves across Britain over the Easter weekend, bringing severe conditions increasingly widely - severe gales over the mountains advancing northwards into Scotland by later Saturday daytime. Rain and hill snow also sweeps northward - a substantial snowfall develops particularly in northern Scotland later Saturday. Colder for all by Sunday with all mountains sub-zero, above 600-700m in Scotland, 800m in England and Wales - hail and snow showers with gales bringing severe chill factor. Milder southerlies develop for Monday, dry for most, but risk of gales especially in the west. A changeable weather regime is expected to continue next week, possibly turning chillier again later in the week.