Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Tuesday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and rain mix
Precipitation falling mostly as snow on higher terrain, rain on low-to-middle elevations, may turn to sleet or rain higher up.
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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and rain mix
Precipitation falling mostly as snow on higher terrain, rain on low-to-middle elevations, may turn to sleet or rain higher up.
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
Tuesday 13th January 2026
Last updated
Mon 12th Jan 26 at
1:27PM
Summary for all mountain areas
A cold front will move southeastwards brining a few hours of precipitation - although still some uncertainty in its exact shape and position. Snow and hail showers will affect W Scotland whilst most other areas will have a few hours of rain, in places finishing as snow, as the temperature drops.
Headline for Eryri / Snowdonia National Park
Rain for a few hours (finishing as snow higher up). Intermittently windy.
How windy? (On the summits)
Changing through day: Initially southerly 40mph, then a lull before westerly 30mph afternoon.
Effect of the wind on you?
Walking on higher areas intermittently arduous and wind chill considerable.
How Wet?
Rain and snow for a few hours
Two to four hours of precipitation morning and middle of day, turning to snow on higher areas before clearing early to mid afternoon from west.
Cloud on the hills?
Blanket of low cloud probable; cloud base may rise or have risen from west
Cloud may well fill in or have filled in across the hills in rain. There may be improvement from the west but this very uncertain.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Little or no sunshine. Widely misty or murky in rain.
How Cold? (at 900m)
4C dropping from west to 0C. Will feel as cold as minus 10C where exposed to the wind.
Freezing Level
Above the summits although later 850m west Wales.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 14th January 2026
Last updated
Mon 12th Jan 26 at
1:27PM
How windy? (On the summits)
West backing southerly 20-25mph in a lull after dawn. Will progressively strengthen to 40-50mph, strongest west Wales.
Effect of the wind on you?
Fairly small morning. Then walking increasingly difficult and wind chill becoming significant.
How Wet?
Risk of snow an hail showers
A few showers may come in off the sea giving hail and snow, although rain lower particularly coastal slopes. Threat precipitation setting in late in day.
Cloud on the hills?
Probably remaining extensive on most or all higher areas
Cloud sometimes forming below 450m near the coast, but cloud base generally rising to 600 to 800m - possibly a few breaks to higher summits, mainly east Wales. Cloud base may drop markedly later in day.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Occasional sunshine, mainly well inland morning. Visibility often very good, but poor in snow.
How Cold? (at 900m)
-1C. Directly in wind will feel as cold as minus 12C.
Freezing Level
800m coastal hills; otherwise 700m. Frost many valleys after dawn.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 15th January 2026
Last updated
Mon 12th Jan 26 at
1:27PM
How windy? (On the summits)
Southerly 25mph. Uncertainty later in day: There may be a pronounced lull but could strengthen markedly toward dusk.
Effect of the wind on you?
Mostly fairly small.
How Wet?
Risk showers
Most likely though extensively dry. But some uncertainty: chance showers morning west Wales, and of persistent rain late in day (snow higher slopes).
Cloud on the hills?
May well clear most summits
Cloud base likely to lift toward 900m widely, possibly sometimes clearing higher tops. Risk though in precipitation of cloud filling in across the hills.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Patches of sunshine - may give way to thickening cloud. Visibility excellent but very poor in precipitation.
How Cold? (at 900m)
0 or 1C
Freezing Level
900 or 1000m.
Planning Outlook
Mostly cloudy with precipitation from time to time over the next few days - although total rainfall is now expected to be fairly small on most mountains, particularly N Scotland. Temperature wise, it is highly likely to remain colder than recent January's with the snow pack across the Scottish Highlands being enhanced by further snowfall, whilst further south snow accumulates on higher areas, and occasional falls reaching lower slopes.