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.
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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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
Thursday 16th July 2026
Last updated
Wed 15th Jul 26 at
3:59PM
Summary for all mountain areas
Extremely dry ground conditions with risk of wildfire, notably England and Wales. Remaining very warm and mostly sunny across the country, high cloud and haze weakening the sun in the north. Early sea fog affects low slopes of north and east Scotland and England, this burning off through morning.
Headline for Eryri / Snowdonia National Park
Very warm sun; dry ground with fire risk
How windy? (On the summits)
Easterly, later northeasterly; 5-15mph, some gusty areas to 20mph mainly early and late in the day, including down to lower slopes to the west.
Effect of the wind on you?
Fairly small, but some more noticeable gustier spots at times.
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, though sometimes weakened by high cloud. Visibility very good, a light haze.
How Cold? (at 900m)
15C from dawn (valleys slightly cooler at dawn), rising to 19C (valleys reach 27C).
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 17th July 2026
Last updated
Wed 15th Jul 26 at
3:59PM
How windy? (On the summits)
North to northeasterly 10 to 20mph, strongest over tops in Snowdon/Yr Wyddfa area and on Llyn peninsula.
Effect of the wind on you?
Mostly small.
How Wet?
No rain expected
Cloud on the hills?
Hills clear
Remote chance of an odd patch of cloud drifting onto northern slopes.
Chance of cloud free summits?
Nearly certain
Sunshine and air clarity?
Sunshine and thin high cloud. Visibility good though a slight haze.
How Cold? (at 900m)
15C from dawn, small rise to 17C; northernmost hills see little or no rise.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 18th July 2026
Last updated
Wed 15th Jul 26 at
3:59PM
How windy? (On the summits)
Northerly, some variability, 10-20mph; quite gusty in the morning.
Effect of the wind on you?
Fairly small, some nuisance gusts.
How Wet?
Chace scattered showers
Showers breaking out here and there, light in nature and highly regional; many hills stay dry.
Cloud on the hills?
Little expected
Patchy mist on middle and low slopes early, this lifting and mostly dissipating soon after dawn. A few banks may occasionally drift over high northern terrain but otherwise clear.
Chance of cloud free summits?
90%
Sunshine and air clarity?
A patchwork of cloud and sunshine. A light haze, visibility becomes very good to the east.
How Cold? (at 900m)
12 to 14C, coolest Carneddau to Llanberis where little or no rise in temperature.
Freezing Level
Above the summits.
Planning Outlook
Settled summer weather continues into the weekend and next week as high pressure dominates. Warm temperatures on the hills in midweek will trend cooler from the north from Friday into the weekend, dropping below 10C on summits for periods, mainly Scottish mountains. Most persistently cooler in the north where some cloud will be drawn onto high terrain and over tops at times, occasional light showery rain; occasional inversion conditions in the morning. Otherwise generally ongoing dry weather, with good amounts of sun and many hill tops often clear of cloud. Continuing very high risk of fire with extremely dry ground conditions. A change of weather pattern late in the month brings scope for rain and thundery showers.