Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Mild
Air temperature +5C or above 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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Mild
Air temperature +5C or above 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
Thursday 24th April 2025
Last updated
Thu 24th Apr 25 at
7:46AM
Summary for all mountain areas
Low cloud from the North Sea covering all but some western mountains widely from dawn will gradually clear as it retreats eastwards into the middle of the day, some patches may remain on eastern slopes. Sunny most or all day western coasts. Small risk an afternoon shower.
Headline for Eryri / Snowdonia National Park
Sunshine and patchy cloud, breeze increasing later.
How windy? (On the summits)
Southeasterly 10-15mph, strengthening toward evening to 20mph, soonest on/near Llyn peninsula.
Effect of the wind on you?
Mostly small
How Wet?
Chance of a late shower
By late afternoon, one or two isolated showers may form and drift northwards.
Cloud on the hills?
Little if any west
Cloud mostly east Wales base 450m (higher tops may be above the cloud) from dawn, will break up mid to possibly locally late morning.
Chance of cloud free summits?
Almost certain by late morning
Sunshine and air clarity?
Cloud, mainly east Wales, breaking to give extensive sunshine. Visibility excellent, some morning haze.
How Cold? (at 900m)
5C rising to 7C.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 25th April 2025
Last updated
Thu 24th Apr 25 at
7:46AM
How windy? (On the summits)
South or southeasterly 20-25mph, gusty 30mph in places toward and west of Snowdon group.
Effect of the wind on you?
Higher winds starting to affect comfortable walking. Some sudden buffeting gusts around Snowdon and west.
How Wet?
Occasional rain, risk wetter later
Patchy rain throughout the day. Some more persistent rain possible at times toward Llyn peninsula. Greater risk of more widely persistent rain toward evening, may become heavier from dusk.
Cloud on the hills?
Lowering in west in rain
Patchy cloud banks likely to come and go over higher slopes, more persistent in west. Best breaks to tops toward Carneddau. Lowering to 600m near and west of Snowdon in rain.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Little or no sun. Visibility good when dry, but reducing in rain, later poor.
How Cold? (at 900m)
5C. Feeling near -5C in strongest winds.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 26th April 2025
Last updated
Thu 24th Apr 25 at
7:46AM
How windy? (On the summits)
Southerly 15mph, to occasional 20mph higher tops.
Effect of the wind on you?
Mostly small
How Wet?
A little rain, risk a showery burst
Rain from overnight may leave a little drizzly rain into the morning. Likely fading out, but possible local bursts of rain forming mostly inland in afternoon.
Cloud on the hills?
Fairly extensive, rising slowly
Widely covering the hills in the morning, banks at various heights, in places to lower slopes toward west. Gradually lifting to upper slopes, some breaks forming, soonest near/north from Ogwen valley.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Glimpses of sun mainly afternoon. Misty, murky start widely, visibility slowly improving to become good below cloud.
How Cold? (at 900m)
6C
Freezing Level
Above the summits
Planning Outlook
Weak fronts will encroach from the Atlantic by Friday into the weekend, bringing more humid air, with low cloud and patchy rain or drizzle, local showery bursts. Possibility of more persistent rain in western Scotland by Sunday with stronger southwesterly winds for a time. Generally mild, or increasingly warm into early next week as southerly air prevails. High pressure rebuilding with a good deal of dry and sunny weather expected next week into the start of May.