Includes all summits in the the northern half of Wales from Pumlumon northwards.
Eryri / Snowdonia National Park
Thursday 27th March 2025
Last updated
Wed 26th Mar 25 at
2:33PM
Widespread upland severe gales and rain across Scotland - although breaks in the rain some eastern and far northern areas (sometimes snow higher tops far north). South into England and Wales, less windy, particularly morning and away from hills open to the sea to the southwest, very little if any rain.
Increasingly windy - upland gales developing; chance drizzle western hills.
Southwesterly 25 to later 35mph, but on Snowdon range 40mph - possibly 55mph higher tops late in day.
Increasingly strenuous walking on higher exposed terrain, affecting balance on tops and ridges. Marked wind chill.
Patches rain and drizzle
Occasional drizzly rain western mountains - perhaps isolated apart from between Snowdon and Lleyn peninsula.
Extensive on higher areas
Blanket low cloud much of the day, shrouding hills to lower elevations in west coastal areas, widely 500m well inland - although mostly above 700m easternmost summits and near and north/east of Ogwen valley.
10%
Sunshine unlikely near the west coast; pockets of sun elsewhere, fairly widely easternmost hills. Very good or excellent visibility, but poor in rain.
4C. Feeling below-5C on higher tops afternoon.
Above the summits
Eryri / Snowdonia National Park
Friday 28th March 2025
Last updated
Wed 26th Mar 25 at
2:33PM
Westerly 35mph or in mid Wales, 30mph; squally near showers.
Considerable wind chill. Frequent buffeting, especially near precipitation.
Hail showers, risk lightning
Hail and snow showers, mainly afternoon, risk isolated thunder. Precipitation mostly rain below 600m.
Frequently covering higher tops.
Cloud base changing in and out of showers: mostly above 700m, clearing most tops periodically (especially east Wales), but patches below 500m in showers.
30% west to 70% east Wales
Patchy sun, mainly east Wales. Slight haze.
0C. Will feel as cold as minus 10C directly in the wind.
900m
Eryri / Snowdonia National Park
Saturday 29th March 2025
Last updated
Wed 26th Mar 25 at
2:33PM
Westerly 15 or 20mph, perhaps occasionally 25mph higher tops Snowdon range, particularly toward evening.
Mostly small.
Little or no rain
Substantially dry. But may turn drizzly toward evening most likely between Snowdon and Lleyn peninsula.
Probably extensive on highest tops
Cloud base typically 600 to 900m by late morning (lowest westernmost summits). Will probably lower, most pronounced western mountains toward evening, where below 400m.
60%
Patches of sunshine, mainly east Wales will tend to give way as cloud thickens afternoon. Very good or excellent visibility.
0 rising to 3C.
900m at first; above the summits by midday.
Frequently windy with intermittent rain (or widely snow and hail showers on Friday) until early next week. Pressure is then likely to build markedly over and east of Britain, bringing the return of dry and sometimes warm and sunny weather for much of next week.