Eryri / Snowdonia National Park

Includes all summits in the the northern half of Wales from Pumlumon northwards.

Tuesday's Forecast

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Click here to download the latest PDF Last Updated Mon 22nd Apr 24 at 4:30PM
View our detailed version Last Updated Mon 22nd Apr 24 at 4:30PM

Viewing Forecast For

Eryri / Snowdonia National Park
Tuesday 23rd April 2024
Last updated Mon 22nd Apr 24 at 4:30PM

Summary for all mountain areas

A cold northerly breeze - notable chill factor on the tops, particularly eastern areas. Feeling pleasant where sheltered in the sunshine, especially by afternoon, best in western Scotland. Most places dry all day, low risk of a brief light shower or flurry. Early showers clearing south across Wales.

Headline for Eryri / Snowdonia National Park

Chilly winds. Soon dry with sunshine after early showers.

How windy? (On the summits)

North to northeasterly, 20 to 25mph, may reach 30mph at times over higher tops toward the north of Eryri.

Effect of the wind on you?

Considerable wind chill over higher terrain. Blustery in places which may start to affect ease of walking and balance on exposed higher ridges.

How Wet?

Occasional showers at first

Scattered brief showers or snow flurries on tops, mostly northern coastal hills at first, pushing southwards for a time, but fading out to be mostly dry by late morning.

Cloud on the hills?

Lifting above tops

Banks of cloud on some higher slopes in the morning, mostly Carneddau area. Bases rising, patches may come and go on higher tops for a few hours, but by afternoon most cloud above the tops.

Chance of cloud free summits?

60% rising to 90%

Sunshine and air clarity?

Broken cloud and mostly good amounts of sun; beware sunburn. Visibility excellent.

How Cold? (at 900m)

1 or 2C. Wind chill feeling like -7 to -10C on high tops.

Freezing Level

Close to freezing around 1000m.

Viewing Forecast For

Eryri / Snowdonia National Park
Wednesday 24th April 2024
Last updated Mon 22nd Apr 24 at 4:30PM

How windy? (On the summits)

North to northeasterly 15 to 20mph, occasionally 25mph some higher tops in Yr Wyddfa/Snowdon range.

Effect of the wind on you?

Mostly small effect on walking. Feeling chilly in the wind, but pleasant where sheltered in the sun.

How Wet?

Occasional showers

Risk of a brief flurry of soft hail or snow, mostly northern hills in the morning, moving southwards, likely fading.

Cloud on the hills?

Lifting to tops, clearing

Patches on some higher slopes in the morning, lifting above most summits by afternoon.

Chance of cloud free summits?

60%

Sunshine and air clarity?

Broken cloud and sun. Visibility excellent.

How Cold? (at 900m)

1C rising to 3C. Wind chill feels like -6C on tops in morning, still sub-zero in afternoon.

Freezing Level

Frost in sheltered valleys and some upper cols at first. Lifting above all tops.

Viewing Forecast For

Eryri / Snowdonia National Park
Thursday 25th April 2024
Last updated Mon 22nd Apr 24 at 4:30PM

How windy? (On the summits)

West to northwesterly, 15 to 25mph.

Effect of the wind on you?

Fairly small effect on walking, but continued notable wind chill on hills.

How Wet?

Showers developing

A few showers near to coasts in the morning, then forming more widely inland with time, possible hail, plus snow flurries over higher terrain.

Cloud on the hills?

Occasionally covering higher areas

Banks of cloud drifting onto some higher slopes in the morning. Bases rising toward higher summits, often lifting above tops by middle of day onward.

Chance of cloud free summits?

70%

Sunshine and air clarity?

Variable cloud and sun, best in morning. Visibility excellent.

How Cold? (at 900m)

2 or 3C. Wind chill feeling like -5C.

Freezing Level

Near freezing sheltered higher areas and valleys at first. Otherwise just above freezing to tops.

Planning Outlook

Northerly breezes continue into midweek, feeling distinctly chilly over higher terrain - temperatures will fluctuate from below freezing in the morning, to a few degrees above into the afternoon for a few days - coldest toward the east and northeast. Sunny spells with excellent visibility, mixed with scattered brief showers or snow flurries. Lowering pressure Thursday into Friday, turning more widely showery again with hail and snow on some hills, but winds fairly light. A risk of a rain system spiraling across Britain over the weekend, upland snow for a time, accompanied by stronger east to southeasterly winds.