Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Thursday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
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
Thursday 2nd July 2026
Last updated
Wed 1st Jul 26 at
4:04PM
Summary for all mountain areas
Gales early, severe over tops of north England and Scotland. Wind gradually eases, though staying blustery north. Showers, drizzle, and low cloud early, particularly west hills. England, Wales, and east Scotland largely dry afternoon, few cloud caps over high tops; cloud and drizzle linger in west Scotland.
Headline for Eryri / Snowdonia National Park
Gales soon easing; early rain, dry afternoon
How windy? (On the summits)
Westerly, 50-60mph dawn-early morning, soon lessening and shifting northwesterly to 30-40mph noon, further easing to finish near 15-20mph, some gustiness over high terrain.
Effect of the wind on you?
Severe conditions from overnight and still difficult into the morning, walking and balance challenging with significant wind chill. Improving, likely fairly small effects with nuisance gusts over tops late in the day.
How Wet?
Showers fade, largely dry afternoon
Overnight rain clears to leave a few showers through the early hours, drizzly on the high tops, increasingly scattered by afternoon when only brief showers may drift from the northwest from time to time.
Cloud on the hills?
Lifting toward or above tops
Covering high terrain fairly widely from dawn, lifting toward highest tops and gradually tending to thin and break, but patches may come and go western tops.
Chance of cloud free summits?
30% rising to 60%
Sunshine and air clarity?
Occasional sun breaking through, most often eastern lower slopes, and perhaps more extensive sun here later. Visibility good below cloud, some haze toward coastal areas.
How Cold? (at 900m)
7C at dawn rising to 9 or 10C, warmest towards Berwyn group. Directly in the stronger winds feeling like -5C on tops, nearer 0C later.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 3rd July 2026
Last updated
Wed 1st Jul 26 at
4:04PM
How windy? (On the summits)
Westerly 15-20mph, quite gusty with time, tops gusts to 30mph over high tops.
Effect of the wind on you?
Fairly small but quite gusty over high tops affecting comfort of walking.
How Wet?
Likely none
Some fine drizzle on high terrain where in cloud, most likely in the early hours, this fading for dry hills.
Cloud on the hills?
Early cloud largely clears
Patchy cloud banks mostly over western hills, may thicken for a few early hours, but becoming well-broken afternoon with occasional passing banks, not just high terrain.
Chance of cloud free summits?
40% rising to 80%
Sunshine and air clarity?
A mix of sun and high cloud. Visibility good out of cloud inland, some haze toward coast.
How Cold? (at 900m)
10 to 12C, little variation all day. Feeling nearer to 0C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 4th July 2026
Last updated
Wed 1st Jul 26 at
4:04PM
How windy? (On the summits)
Westerly 25 to 35mph, stronger gusts may develop at times around higher mountains, and downslope to the east early.
Effect of the wind on you?
Affecting comfortable walking and balance on higher tops and ridges, more frequent buffeting for periods highest areas.
How Wet?
Occasional drizzle
Small amounts in total, but some drizzle in the air for periods, mostly western coastal hills. Little if any east Wales.
Cloud on the hills?
Fairly extensive, lowest west
Blanket cloud across hills toward west much of the day, bases 400-600m or sometimes lower near coast. Mostly above 600m further east, some breaks at times. Highest tops may be near top of cloud.
Chance of cloud free summits?
20% west, to 40% east.
Sunshine and air clarity?
Largely cloudy and misty coastal west Wales, some better visibility below cloud further inland, north and east.
How Cold? (at 900m)
11C rising to 13C afternoon. Feeling like 2 to 4C directly in the wind on tops.
Freezing Level
Above the summits.
Planning Outlook
Westerlies prevail across northern Britain. Rain, drizzle and low cloud most frequent over western hills from Lake District northward. Temperatures near average, but feeling cool in exposure to wind on tops, which could regularly be quite strong and gusty. An improving trend from the south into and over the weekend as higher pressure builds, best conditions for Wales and eastern hills elsewhere. A drier and warmer window looks probable from early-to-middle next week, very warm sunshine on some days England and Wales, southwesterlies still bring more cloud to western Scotland, some rain at times, wettest toward northwest. This pattern looks to continue into the following weekend with high pressure to the southwest maintaining drier conditions here with cloudier/damper conditions in the north and west.