Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday'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, Inversion
Banks of cloud or fog on lower or middle slopes, but higher terrain likely clear and sunny above an inversion.
Hazy, some fog banks
.jpg "Hazy, some fog banks"){kind=icon}
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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.
Click an icon for more information or click here for a key to all icons.
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, Inversion
Banks of cloud or fog on lower or middle slopes, but higher terrain likely clear and sunny above an inversion.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
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
Saturday 31st October 2026
Last updated
Fri 30th Oct 26 at
4:00PM
Summary for all mountain areas
Rain and low cloud affects the northwestern Highlands much of the day, plus blustery winds on some high terrain. Drier further inland/east in Scotland, best cloud breaks N/E of Cairngorms. England and Wales dry with light winds; morning fog on low ground, but the hills sunny above an inversion.
Headline for Eryri / Snowdonia National Park
Light wind, morning fog on low ground, hills sunny.
How windy? (On the summits)
Southerly 10mph or less.
Effect of the wind on you?
Negligible
How Wet?
No rain expected
Some dampness if in early low-level fog in east.
Cloud on the hills?
Patches of valley fog clearing
Fog in some valleys and lower slopes from dawn into morning mostly east Wales, whilst northwestern areas are clearer. Most hills above the fog layer, which tends to increasingly break up as the day goes on.
Chance of cloud free summits?
90% (some tops above fog in morning)
Sunshine and air clarity?
Sunshine breaking through early fog on low ground, where staying hazy. Widely sunny all day with superb visibility higher slopes.
How Cold? (at 900m)
8C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 1st November 2026
Last updated
Fri 30th Oct 26 at
4:00PM
How windy? (On the summits)
North to northeasterly 20mph, at times 25mph on tops mainly in the morning.
Effect of the wind on you?
Fairly small effect on walking, but noticeably breezy and rather chilly over high terrain particularly in the morning.
How Wet?
Occasional drizzle
A little patchy drizzly rain possible, mainly northernmost areas, perhaps later eastern hills, amounting to very little, may fade out.
Cloud on the hills?
Low cloud or fog, breaks west
Fairly extensive low cloud, in places fog from lower elevations upward in the morning. Some highest summits may start near top of the cloud layer. Some breaks emerge near west coast hills with time.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Rather cloudy and misty over the hills and to some lower elevations in morning, some improvement during day, best in west.
How Cold? (at 900m)
5C. Feeling just below 0C in breeze on tops.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 2nd November 2026
Last updated
Fri 30th Oct 26 at
4:00PM
How windy? (On the summits)
Northeasterly 20 to 25mph, gusty in places around high tops and passes, 30mph at times, speeds tending to rise a little.
Effect of the wind on you?
Feeling noticeably breezy and chilly on high terrain. Ease of walking more affected locally in gusty areas.
How Wet?
Rain not expected
Cloud on the hills?
Mostly little
Occasional patches grazing higher slopes mostly Carneddau, but often clear toward west coast.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patchwork of sun, best in west. Visibility very good, some haze lower down.
How Cold? (at 900m)
2 to 4C. Feeling nearer -5C directly in wind.
Freezing Level
Above the summits, but patchy frost in valleys at first, also some sheltered higher slopes.
Planning Outlook
High pressure centred over Scotland will persist during early November bringing settled conditions. Generally dry weather, but some areas of misty dampness and regular fog on low ground, some cloud banks on hills but also inversion conditions on high tops, particularly Scotland. Overnight frost in glens will be common, plus some frost pockets for sheltered high terrain, whilst many summits will stay often just above freezing point. Light winds for several days into next week for Scotland, but stronger easterlies are likely for England and particularly Wales which would push cloud banks higher up here during the week ahead.