Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday'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.
Cool to mild
Air temperature 5 to 10C 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.
Cool to mild
Air temperature 5 to 10C 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 4th May 2026
Last updated
Sun 3rd May 26 at
4:26PM
Summary for all mountain areas
Showers soon drifting into northwest Scotland, cloud spreading onto western high terrain, and rain later more widespread across northern Scotland. Scattered showers in southern Scotland and afternoon in England, early low cloud but many summits clearing. Some showers in Wales, mostly south with heavy bursts afternoon.
Headline for Eryri / Snowdonia National Park
Afternoon showers west; most hills become cloud-free
How windy? (On the summits)
North-northeasterly 5-15mph, trending towards the higher end of the range with time.
Effect of the wind on you?
Small, but trending breezy on the high summits later.
How Wet?
Some afternoon showers
The morning will by dry, possibly briefly drizzly in cloud on high tops. Through afternoon, a rising risk of showers on slopes facing the Llyn Peninsula, and coastal slopes south of here. A risk of a heavier shower towards mid-Wales.
Cloud on the hills?
Clearing most summits, but lingering on high north slopes
After dawn, cloud likely to be widespread on higher areas, particularly east Wales; some fog into sheltered valleys. Cloud base rises through morning, clearing summits south of Snowdon and Carneddau; banks linger on northern slopes above 700-800m; some risk of cloud returning to tops further south in showers.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patches of sunshine, a greater chance of extended sun breaks through afternoon. Visibility very good.
How Cold? (at 900m)
4C rising to 6C, or locally 7C on hills south of Snowdonia NP.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 5th May 2026
Last updated
Sun 3rd May 26 at
4:26PM
How windy? (On the summits)
Northerly 10-15mph, sometimes less.
Effect of the wind on you?
Mostly small.
How Wet?
Substantially dry
A chance of sparse light showers, though most hills stay dry.
Cloud on the hills?
Mostly just northern hills
Low cloud to 500-600m in north Snowdonia/Carneddau in the early morning, patches on higher terrain further south. Much of the cloud lifts and dissipates for clear hills, but patches continue to drift onto high northern slopes through the day.
Chance of cloud free summits?
80%, 60% northern slopes
Sunshine and air clarity?
Sunshine breaking out through morning for at least several hours, then a patchwork afternoon with fair weather cloud. Very good visibility.
How Cold? (at 900m)
3 or 4C, may locally rise to 5C, greatest chance mid-Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 6th May 2026
Last updated
Sun 3rd May 26 at
4:26PM
How windy? (On the summits)
Southeasterly, 15 to 20mph, some gustier spots 25mph.
Effect of the wind on you?
Fairly small, but feeling noticeably chillier if exposed to wind on higher tops.
How Wet?
Local showers
Risk of a little patchy light rain from time to time during the day. Scattered showers more likely in afternoon, moving northwest, but some places stay largely dry.
Cloud on the hills?
Covering some slopes at times, lifting
Some varied cloud around mid to upper slopes in the morning, larger banks if any rain occurs. Much cloud lifting to the tops and breaking above into afternoon, but some ragged patches return in showers.
Chance of cloud free summits?
70%
Sunshine and air clarity?
A little sun, perhaps often a rather cloudy sky; sun mainly near coasts afternoon. Visibility excellent.
How Cold? (at 900m)
3C, rising to 5C afternoon.
Freezing Level
Above the summits.
Planning Outlook
Chilly most or all week, particularly across the Scottish Highlands where fresh snow in some areas and morning freezing level sometimes below 700m; patchy frosts developing in the glens and corries, though always thawing soon after sunrise. Wednesday is likely the chilliest day. Mixed weather with showers drifting around the country, though total rainfall will be fairly small. Wind often light as well, though variable afternoon breezes will form, particularly around showers where gusts may be suddenly strong. Local low fog in the mornings, typically lifting towards high terrain, often above summits though regions for best breaks are uncertain; often cloud with just glimpses of sun for most. Next weekend is indicated to be wet in Wales and England; detail remains uncertain in Scotland.