Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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
Saturday 9th May 2026
Last updated
Fri 8th May 26 at
4:28PM
Summary for all mountain areas
Chilly but largely dry with light winds for Highlands, broken cloud lifting above most tops, isolated showers / flurries. Greater chance of heavier showers south-central Highlands later. Grey and damp for the Pennines, fresh NE'ly winds. Localised heavy downpours near Peak District & mid-Wales later afternoon.
Headline for Eryri / Snowdonia National Park
Localised heavy downpours form, risk thunder. Gustier wind later.
How windy? (On the summits)
Northeasterly 10-15mph or less particularly inland and further south in morning, rising to 20-25mph, or 30mph in places later afternoon, gusty around higher mountains.
Effect of the wind on you?
Feeling increasingly blustery and rather cool, more noticeably gusty around some tops and ridges, affecting balance in exposure.
How Wet?
Odd spots, then localised thundery showers later
A little patchy rain early in the day, an odd burst of rain, but mostly very little. Then increasing risk during afternoon of localised showers forming, later slow-moving heavy downpours, risk of thunder, particularly mid-Wales.
Cloud on the hills?
Varied, clearing for periods
Patchy cloud banks around the hills in the morning, tending to break and rise toward or above many tops. Western hills more often clear. Ragged patches form later at various heights during/after showers.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Sun often weak through a veil of high cloud, tending to become overcast. Some early misty areas, then visibility very good, reducing where showers form locally.
How Cold? (at 900m)
5 to 7C. Feeling like 0C or just below if exposed to wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 10th May 2026
Last updated
Fri 8th May 26 at
4:28PM
How windy? (On the summits)
Northeasterly 25 to 30mph and notably gusty particularly morning; speeds tend to lessen a little with time.
Effect of the wind on you?
Blustery with considerable wind chill at least in morning. Gusty spots affect ease of walking and balance on ridges.
How Wet?
Rain unlikely
Chance of brief spots of drizzle or light rain early in the day, mainly north and eastern hills, otherwise dry.
Cloud on the hills?
Local banks clearing
Cloud banks mostly drifting over east and northern tops in the morning, tending to lift higher and break above most or all tops.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Fairly cloudy in east in morning, some sunny breaks toward the west coast; broken cloud and sun afternoon. Visibility very good or excellent.
How Cold? (at 900m)
2C rising to 5C afternoon. Feeling as cold as -8C directly in the wind in morning, -3C afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 11th May 2026
Last updated
Fri 8th May 26 at
4:28PM
How windy? (On the summits)
North-northwesterly 20-25mph, may ease a little afternoon, turning toward west-northwesterly later in day.
Effect of the wind on you?
Fairly small, but blustery in exposure on higher tops and ridges, distinctly chilly especially in the morning.
How Wet?
Local showers
Brief showers mostly near north coast in morning, snow flurries on higher tops. One or two showers forming inland into afternoon.
Cloud on the hills?
Lifting and largely clearing
Some cloud banks drifting over tops mainly in northern areas above 700m early in day. Lifting higher up during morning and breaking above the summits.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patchy sunshine develops. Visibility excellent.
How Cold? (at 900m)
2C early morning, rising to 4C afternoon. Feeling like -6C in the wind in morning.
Freezing Level
Close to freezing on highest summits early in day, then rising further above the tops.
Planning Outlook
A chilly outlook into mid-May, with higher Scottish mountains staying near or often below freezing point as northwesterly air prevails. Higher tops in England and Wales also dropping intermittently to freezing point. Wind-speed varying day-to-day, but prepare for often considerable chill-factor on all mountains. Some frost overnight into valleys when skies are clear. Broadly showery weather over the next 10-day period, plus some fronts bringing persistent rain mostly to northwestern Scotland, often falling as snow on mountain tops, sometimes to below 600m. Drier intervals too, some days with fewer showers and broken cloud lifting above the summits, varying locally day-to-day.