Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 8 to 12C 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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 8 to 12C 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
Monday 23rd June 2025
Last updated
Sun 22nd Jun 25 at
4:00PM
Summary for all mountain areas
Windy for all regions, gale-force westerlies on higher mountains. Much cooler air than recently, feeling distinctly chilly where exposed on hills. Showery rain most frequent western Scotland and cloud often capping tops. Light showers England & Wales, drier spells.
Headline for Eryri / Snowdonia National Park
Cool and windy, near-gale. Light brief showers.
How windy? (On the summits)
Westerly 25 to 30mph, at times 35mph, likely strongest early in day, increasing again up to dusk.
Effect of the wind on you?
Blustery over the mountains, affecting comfortable walking and balance on exposed ridges. Marked wind chill.
How Wet?
Occasional light rain
Patchy light showers and drizzle, most common on hills nearer to coast in west. More persistent and heavier rain by dusk.
Cloud on the hills?
Covering tops, tending to rise
Banks of cloud mostly above 700-800m, lower patches in west in morning. Some breaks forming higher up with time.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Largely cloudy, glimpses of sun mostly east. Visibility good below cloud.
How Cold? (at 900m)
5C from dawn, rising to 9C. Feeling sub-zero in the wind, near -5C on high tops early in day.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 24th June 2025
Last updated
Sun 22nd Jun 25 at
4:00PM
How windy? (On the summits)
West to southwesterly 30 to 40mph.
Effect of the wind on you?
Very blustery over the mountains, walking becoming arduous in places on exposed higher areas. Considerable wind chill.
How Wet?
Drizzly rain
Generally damp with drizzly rain fairly persistent on western hills, risk some steadier rain. Small amounts in east.
Cloud on the hills?
Extensive
Shrouding the mountains from lower slopes upward near coast, above 400-600m inland, higher north/east of Ogwen.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Largely cloudy, little or no sun. Rather misty across hills, locally good visibility below cloud inland/east.
How Cold? (at 900m)
11C. Feeling near freezing in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 25th June 2025
Last updated
Sun 22nd Jun 25 at
4:00PM
How windy? (On the summits)
South to southwesterly 20 to 30mph, stronger gusts at times western areas.
Effect of the wind on you?
Starting to affect comfortable walking and balance on exposed tops and ridges.
How Wet?
Drizzly rain, risk wetter for a time
Frequently drizzly especially western areas. Most likely afternoon, developing into steadier rain for a few hours.
Cloud on the hills?
Lowest and most persistent west
Shrouding mountains most or all day, from mid-slopes upward western areas, or lower nearest coast. Higher cloud base toward and north of Ogwen valley, some breaks above 700m. Also clearer Berwyn group.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Largely cloudy, glimpses of sun toward north/east. Visibility good out of cloud.
How Cold? (at 900m)
Around 10C all day. Feeling close to freezing in the wind.
Freezing Level
Above the summits
Planning Outlook
West to southwesterly winds prevail this week and a series of frontal systems come in from the Atlantic. Rain and drizzle most frequent in west with low cloud often covering hills. Higher cloud bases and drier further eastwards. Much cooler than recently, temperatures nearer average, or lower at times in Scotland. Often windy, but by later in the week, risk of more extensive upland gales and some heavier rain as deeper areas of low pressure likely move in.