Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Tuesday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
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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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 14th July 2026
Last updated
Mon 13th Jul 26 at
4:00PM
Summary for all mountain areas
Dry with strong sunshine, warmest in west. Early fog and low cloud over eastern hills retreats toward the North Sea in the morning. Gusty easterlies mainly central Scotland southwards, strongest for Wales. Extremely dry ground conditions - beware high risk of fire.
Headline for Eryri / Snowdonia National Park
Strong gusty wind, warm sunshine, early patchy cloud east.
How windy? (On the summits)
Easterly 25mph, but some gusty spots 35mph around upper slopes, strongest gusts not necessarily on summits; speeds lessen a little afternoon, may rise slightly again up to dusk.
Effect of the wind on you?
Breezy over the hills, gusty areas making walking uncomfortable and affecting balance on ridges; feeling cooler where exposed.
How Wet?
No rain expected
Cloud on the hills?
Little if any
Patchy cloud over some eastern hills from dawn, mainly Bala and Berwyn areas, above 500-600m; very highest tops may be just above cloud. Very little if any elsewhere. Soon largely dispersing.
Chance of cloud free summits?
70% at first east, otherwise practically certain.
Sunshine and air clarity?
Mostly sunny west, some patchy cloud in east early in day and a little fair-weather cloud builds during day. Visibility very good, some haze locally. High UV, beware sunburn.
How Cold? (at 900m)
12 to 15C from dawn, coolest if in cloud in east, rising to 18 or 19C (valleys reach 27 to local 29C afternoon). Directly in the wind will feel fresher, but beware dehydration.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 15th July 2026
Last updated
Mon 13th Jul 26 at
4:00PM
How windy? (On the summits)
Easterly 20 to 25mph, some gusty spots 35mph around higher mountains, passes and downslope to west in morning.
Effect of the wind on you?
Feeling breezy over the hills, gusty areas starting to affect comfortable walking and balance at times.
How Wet?
No rain expected
Cloud on the hills?
Little if any
From dawn, some patchy cloud around 500-600m mainly Berwyn to Bala hills, some high tops above this cloud, soon all thinning and dispersing. Brief fragments in west, but largely clear.
Chance of cloud free summits?
Soon practically certain
Sunshine and air clarity?
Strong sunshine most of the day, a little thin fair-weather cloud. Visibility excellent, some early haze.
How Cold? (at 900m)
15C from dawn (cooler on some eastern hills if in cloud), rising to 18C afternoon (valleys reaching 27C).
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 16th July 2026
Last updated
Mon 13th Jul 26 at
4:00PM
How windy? (On the summits)
Easterly 15-20mph, some gusty areas at times 25-30mph, not just on the highest terrain.
Effect of the wind on you?
Fairly small, but some more gustier locations may make walking uncomfortable through high passes and some slopes.
How Wet?
No rain expected
Cloud on the hills?
Hills clear
Any patchy cloud on easternmost hills at first soon dispersing.
Chance of cloud free summits?
Practically certain
Sunshine and air clarity?
Sunshine over the hills dawn til dusk, occasional thin high cloud. Visibility excellent.
How Cold? (at 900m)
15C from dawn (warmer than valleys at first), rising to 18C (valleys reach 27C).
Freezing Level
Above the summits.
Planning Outlook
Staying broadly fine likely through the weekend into early next week at least - dry with pleasantly warm temperatures and often plenty of sunshine. Some coastal fog rolling inland overnight for misty dawns in places this week. Valley temperatures rising to 25C or above, typically warmer in Wales and Peak District. Gusty easterly winds for England and Wales. An ongoing very high risk of fire with extremely dry ground conditions. Into the weekend, northerly breezes develop more widely, a cooling trend for a time, particularly Scotland where summit temperatures likely dip back below 10C; some cloud may be drawn onto northern mountains at times, small chance of isolated showers.