Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Wednesday'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.
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.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate 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.
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.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 11th November 2026
Last updated
Tue 10th Nov 26 at
3:25PM
Summary for all mountain areas
Many places stay dry all day with sunshine and broken cloud. Below freezing on Scottish tops. A band of rain and hill snow moves into northern Scotland during the day, plus a strengthening northwesterly wind. Easterly winds for Wales, light rain in the south fizzles out, but leaves low cloud and dampness.
Headline for Eryri / Snowdonia National Park
Gusty wind; largely dry, cloud thinning, clearer west.
How windy? (On the summits)
Easterly 20 to 30mph, typically strongest in mid Wales, stronger gusts in places around tops, passes and locally to some lower slopes; easing a little during the day.
Effect of the wind on you?
Affecting comfortable walking on exposed terrain, variable gusts but lessening. Marked wind chill.
How Wet?
A little rain mainly mid Wales in morning
Patchy light rain mostly toward mid Wales from before dawn into early morning, will break up and fizzle out before middle of day. Largely dry all day northwestern mountains around the wider Snowdon group.
Cloud on the hills?
Mostly eastern hills, little northwest
Banks of cloud lowest and most persistent toward mid Wales and the Bala-Berwyn group in the morning, thinning gradually into afternoon. Further north/west, the cloud base higher and patchier, mostly around Carneddau for a few hours, but increasingly clearing.
Chance of cloud free summits?
20% rising to 50% east/mid Wales, 70% much of day northwest.
Sunshine and air clarity?
A veil of cloud thins from the north to allow sun to break through, mainly western areas. Poor visibility where in early cloud and rain mid-Wales, but very good northwest.
How Cold? (at 900m)
2 or 3C. Feeling like -5 to -8C directly in the stronger wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 12th November 2026
Last updated
Tue 10th Nov 26 at
3:25PM
How windy? (On the summits)
Northerly 20 to 30mph.
Effect of the wind on you?
Affecting comfortable walking on exposed high terrain, gusts may affect balance. Considerable wind chill.
How Wet?
Showers in north for a time
Occasional brief showers drifting onto coastal hills from the north in the morning, snow flurries above 600m.
Cloud on the hills?
Grazing tops at times
Occasional patches cap higher slopes from time to time, mainly areas facing north nearer the coasts.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Mostly sunny, a little patchy cloud toward coasts. Visibility excellent.
How Cold? (at 900m)
-1C. Feeling like -10C directly in the wind.
Freezing Level
800m, or slightly higher near coast. Also frost many inland valleys in morning.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 13th November 2026
Last updated
Tue 10th Nov 26 at
3:25PM
How windy? (On the summits)
North-northwesterly, 15mph or likely dropping less during the day.
Effect of the wind on you?
Mostly small.
How Wet?
Substantially dry
Chance of an odd light shower drifting onto coastal areas near Llyn peninsula.
Cloud on the hills?
Mostly little if any
Some patchy cloud occasionally drifting onto upper slopes of Carneddau and Snowdon group, but often clearing. Very little if any cloud further south and east.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Mostly sunny, some patchy cloud near to coasts in northwest. Visibility excellent.
How Cold? (at 900m)
0 or -1C.
Freezing Level
Around 800-900m, but frost widely in valleys in morning, in places all day inland out of sunlight.
Planning Outlook
Chillier in the second half of this week with frost widely, but much clearer conditions for all with sunshine. Into the weekend, as the wind shifts west then southwesterly, less cold air drifts in from the Atlantic bringing more cloud onto western hills - some rain mainly in western Scotland, whilst England and Wales may remain largely dry for the weekend. A changeable outlook into next week with varying temperatures, stronger wind at times, rain and some upland snow possible. Unsettled patterns are more likely to prevail beyond mid-month.