Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Thursday'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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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
Thursday 22nd October 2026
Last updated
Wed 21st Oct 26 at
4:30PM
Summary for all mountain areas
Strong winds early in the day, gale force particularly toward the Cairngorms, lessening to lower speeds with time for all areas. Some early rain and upland snow in northeast Scotland clears. A few showers near west coasts fade. Cloud breaks above many tops with some sunshine, but remaining chilly all day.
Headline for Eryri / Snowdonia National Park
Fairly light wind most of day, early showers fade, cloud lifts.
How windy? (On the summits)
Westerly 25mph or briefly stronger at dawn, easing 15-20mph or less for a time middle of day, shifting southwest then southerly. From dusk onward rising southeasterly 30-40mph, then variable lulls into night.
Effect of the wind on you?
Mostly fairly small, but feeling chilly where exposed on high tops.
How Wet?
Shower fade, then rain into night
Showers drifting from Cardigan Bay from dawn, briefly frequent but tending to fade to just isolated spots of rain, and mostly dry afternoon. Rain returning into evening, then setting in overnight.
Cloud on the hills?
Lifting to caps on summits
Most hills above 700m begin shrouded, banks to 500m towards Cardigan Bay around showers. Cloud will tend to lift and break as showers fade, to mostly just caps above 900m for a time, and some breaks likely too.
Chance of cloud free summits?
30%, rising to 70% into afternoon
Sunshine and air clarity?
Patchy sunshine, brighter windows east, then high cloud building afternoon into evening. Very good visibility.
How Cold? (at 900m)
2C rising to 4C, rising further into night. Feeling like -5C in early wind, again into night.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 23rd October 2026
Last updated
Wed 21st Oct 26 at
4:30PM
How windy? (On the summits)
Variable from dawn, mostly 20mph and less, then shifting northwesterly, swiftly strengthening to 55-70mph.
Effect of the wind on you?
May be fairly small in the early hours, but rapidly deteriorating to difficult conditions with severe wind chill.
How Wet?
Rain most of the day
Rain fairly persistent from dawn, a few patchier moments early but then setting in for several hours at least, steadiest heavy falls towards northwest hills.
Cloud on the hills?
Extensive
Blanket fog to at least middle slopes likely all day, and often to lower slopes; some local variability as wind shifts direction. May begin to lift and break up a bit late in the day but perhaps only after dark.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull likely all day. Poor visibility.
How Cold? (at 900m)
Starting at 4 or 5C, soon lowering towards 1C. Feeling as cold as -15C in strongest wind.
Freezing Level
Above the summits to start, lowering to around 1000m later.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 24th October 2026
Last updated
Wed 21st Oct 26 at
4:30PM
How windy? (On the summits)
South-southwesterly, 30mph or briefly less at first, rising rapidly to reach 60mph+ as day goes on, little change afternoon.
Effect of the wind on you?
Deteriorating, becoming arduous walking, increasingly difficult mobility on higher terrain, significant wind chill.
How Wet?
Heavy rain sets in
Dry around dawn, for a few hours east Wales, but patchy rain soon moves in from west, setting in increasingly heavy middle of day onward, continuing into evening. Showery into night.
Cloud on the hills?
Lowering to become extensive
Initially most cloud above the hills, apart from odd patches at varied heights. Increasingly cloud will lower onto hills, forming to lower elevations coastal areas; some higher breaks remain north of Ogwen and toward east Wales.
Chance of cloud free summits?
70% at first, dropping to 20%
Sunshine and air clarity?
A little weak sun through high cloud from dawn, soon giving way to overcast skies. Good visibility at first becomes hazier, then poor as rain sets in.
How Cold? (at 900m)
2 or 3C from dawn, rising to 7C afternoon, later briefly 10C, then falling after dark. Always feeling below freezing in the wind.
Freezing Level
Close to highest tops before dawn, lifting well above the summits.
Planning Outlook
A deep area of low pressure moves toward northwest Scotland into the weekend to bring widespread rain and gales, stormy conditions develop over many mountains, the strongest sustained winds over Scottish tops into Sunday in excess of 70-80mph with more powerful gusts. Temperature will vary, briefly above freezing to all tops, then back just below zero on Scottish Munros by Sunday with frequent showers of hail and snow on high mountains. Atlantic west-southwesterlies remain dominant next week, bringing several low pressure systems with rain and wind, punctuated by brief clearer windows.