Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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
Friday 9th October 2026
Last updated
Thu 8th Oct 26 at
4:00PM
Summary for all mountain areas
Gale-force winds across all mountains will make walking challenging and lower temperatures also adds to a significant chill factor. A front clears south over England & Wales with a spell of early rain. Then broadly showery, frequent in west, falling as snow on Scottish Munros, also hail.
Headline for Eryri / Snowdonia National Park
Gales, strongest in morning; early rain then showers.
How windy? (On the summits)
Westerly sustained 45-55mph early with powerful gusts over 60mph in places, lessening to around 35-40mph afternoon.
Effect of the wind on you?
Arduous conditions in exposure all day, gusts constantly challenge balance, more difficult early. Notable wind chill.
How Wet?
Early rain, then showers forming
Rain and drizzle from overnight into morning, a brief heavy burst, then a dry window. Scattered showers afternoon, trending more frequent, particularly into night.
Cloud on the hills?
Extensive early, the varied on high terrain
Blanket low cloud to start, fog patches into valleys west of high terrain. Cloud will lift and break up rapidly as midday approaches, then cloud variably coming and going above 800-900m. Hills east of highest tops substantially clear.
Chance of cloud free summits?
Rising to 60%
Sunshine and air clarity?
Overcast and dull to start, clearing to mostly sunny with good visibility. Patchy high cloud tending to build.
How Cold? (at 900m)
Starting around 11C, suddenly cooling to around 6C. Feeling like -4 to -8C in direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 10th October 2026
Last updated
Thu 8th Oct 26 at
4:00PM
How windy? (On the summits)
Westerly 35 to 50mph, quite gusty, may lessen somewhat later.
Effect of the wind on you?
Challenging conditions in exposure likely all day, considerable buffeting always affecting balance. Significant wind chill.
How Wet?
Showers
Showers stream in from the northwest most of the day, generally light but a few heavy bursts and extended falls may occur.
Cloud on the hills?
Mostly northwest areas, highly variable
Cloud base will vary considerably, typically between 600-900m, lowest during showers on northwestern aspects. Summits east of highest Snowdon group summits will see breaks during dry windows.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Patchwork of cloud and sun, more often cloudy northwest Snowdonia NP. Varied visibility, sometimes poor in rain and also a haze.
How Cold? (at 900m)
4C. Feeling like -7 to -10C in strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 11th October 2026
Last updated
Thu 8th Oct 26 at
4:00PM
How windy? (On the summits)
Northwesterly 20-25mph from dawn into morning, easing to 10-15mph into afternoon.
Effect of the wind on you?
Early in day, marked wind chill and feeling breezy on exposed high tops, modest effect on walking; becoming small.
How Wet?
Early local showers fade
Brief scattered showers in morning, mostly west coast hills, fading to be largely dry. Rain may push in from west into night.
Cloud on the hills?
Clearing tops
Patchy cloud drifting over some higher slopes mainly in western areas in the morning, but likely all dispersing or lifting above tops.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Patchwork of cloud and sun; high cloud may start to build from west later. Visibility excellent.
How Cold? (at 900m)
4 or 5C much of day, then lifting slightly higher onward into evening-night. Feeling like -3C in early wind.
Freezing Level
Above the summits. Slight frost inland valleys at dawn.
Planning Outlook
The weekend begins windy with gales over all mountains, severe on some high tops; showers or more constant rain west, brighter breaks east. Sunday sees a more settled day as a small ridge of high pressure builds from the west; wind eases, sun and cloud clearing most tops, cool temperatures. Next week sees continued mixed weather: bands of rain coming and going, temperatures similarly fluctuating: generally mild, briefly chilly in Scotland with freezing levels temporarily onto high Munros where rain turns to snow; any accumulating snow soon thaws. West-southwesterly winds will be dominant, often quite strong, gales at times, but this allows for drier, brighter windows on eastern hill groups between weather systems.