Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Wednesday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Wednesday 1st July 2026
Last updated
Tue 30th Jun 26 at
4:28PM
Summary for all mountain areas
Rapidly strengthening wind into the afternoon, gales develop increasingly widely later. Odd showers, then rain sweeps into western Scotland through the afternoon, setting in. England & Wales largely dry until evening. Cloud fairly widely on western hills in the morning, lifting for a time prior to rain.
Headline for Eryri / Snowdonia National Park
Varied cloud, wind increasing, gales and rain late in day.
How windy? (On the summits)
Westerly 20mph in morning, briefly less, then strengthening southwesterly, to 30-35mph afternoon, during evening toward 50mph, gusts 60mph high tops, turning westerly again 50-60mph into night.
Effect of the wind on you?
Fairly small in the morning, but becoming more blustery, walking uncomfortable then arduous later in exposure, with considerable wind chill by evening. Ongoing very difficult conditions overnight.
How Wet?
Mostly dry until late, rain toward dusk
Generally dry in morning, an odd light shower in north. Late in day, some spots of rain develop from northwest, amounting to very little until dusk, then an hour or so of steadier rain, breaking to showers into night.
Cloud on the hills?
Fairly extensive, lifting until late, some breaks
Covering many hills in the morning, to some mid-slopes in west. Tending to lift and break toward upper slopes, clearing best inland and toward east by middle of day into afternoon. Lowering and filling in western hills up to dusk.
Chance of cloud free summits?
20% rising to 60%; by dusk 20% west
Sunshine and air clarity?
Fairly cloudy, some sun breaks through, then giving way to thickening high cloud from west. Visibility very good below/out of cloud.
How Cold? (at 900m)
8 or 9C, little variation all day. Feeling near or later below freezing on high tops as wind increases.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 2nd July 2026
Last updated
Tue 30th Jun 26 at
4:28PM
How windy? (On the summits)
Westerly, 50-60mph dawn-early morning, lessening to 30mph during morning, 20-30mph in afternoon.
Effect of the wind on you?
Severe conditions from overnight and still difficult well into daytime, walking and balance challenging, slowly improving.
How Wet?
Showers fade
Overnight rain likely clears to leave showery conditions in the morning, becoming well scattered and brief afternoon, more often dry.
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. Visibility good below cloud, some haze toward coastal areas.
How Cold? (at 900m)
9 or 10C, little variation all day. 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
Tue 30th Jun 26 at
4:28PM
How windy? (On the summits)
Southwesterly 20 to 30mph, speeds likely to fluctuate during the day, may increase to 40mph at least in gusts.
Effect of the wind on you?
Blustery over the hills, affecting comfortable walking on exposed higher areas, some buffeting gusts on ridges.
How Wet?
A little rain west
Patchy drizzle, most common western hills, may develop into some steadier rain at times, but likely small amounts; little if any reaching eastern areas.
Cloud on the hills?
Varied cloud mostly western tops
Patchy cloud banks mostly over western hills, a chance of filling in for periods on tops, but sometimes breaking up. More often clearer well inland and eastern hills.
Chance of cloud free summits?
40% west, 70% east.
Sunshine and air clarity?
A mix of sun and high cloud, but may cloud over more in west. Visibility good out of cloud inland, some haze toward coast.
How Cold? (at 900m)
10 or 11C, little variation all day. Feeling nearer to 0C directly in the wind.
Freezing Level
Above the summits.
Planning Outlook
West to southwesterlies 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. An improving trend from the south over the weekend as higher pressure builds, best conditions for Wales and eastern hills elsewhere. Drier and warmer conditions more likely into next week, very warm some days England and Wales, though southwesterlies still bring more cloud to western Scotland, some rain at times, wettest toward northwest.