Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today'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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
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
Monday 10th November 2025
Last updated
Sun 9th Nov 25 at
4:00PM
Summary for all mountain areas
Heavy rain for much of the Highlands from dawn into the morning, moving northwards, clearing to leave patchy rain, local showers in west; cloud base rising. Some showery rain in the Lakes, drier Pennines. Showers in Wales merging into clusters of heavy rain. Moderate to locally gusty southerly winds.
Headline for Eryri / Snowdonia National Park
Gusty winds. Rain and showery bursts become frequent.
How windy? (On the summits)
South to southwesterly, 15 to 30mph, speeds likely to vary, suddenly gusty around bursts of rain.
Effect of the wind on you?
Feeling noticeably blustery at times on exposed higher terrain; may start to affect comfortable walking; marked wind chill.
How Wet?
Early showers, then more frequent bursts
Showery rain from before dawn, largely clearing, but brief showers may remain. Drier for a few hours in morning, but into middle of day increasing risk heavy bursts of rain becoming frequent from south.
Cloud on the hills?
Often covering hills, varied extent
Shrouding higher areas most of the day, some breaks occasionally to upper slopes, mainly northern areas in the morning. Base lowering in rain, more extensive above 600-700m.
Chance of cloud free summits?
30%
Sunshine and air clarity?
A little sun mostly north in morning. Visibility good when dry, becoming poor in rain.
How Cold? (at 900m)
4 or 5C. Feeling below freezing if exposed to wind, nearer -5C at times on high tops.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 11th November 2025
Last updated
Sun 9th Nov 25 at
4:00PM
How windy? (On the summits)
Southerly, strengthening rapidly overnight up to dawn, 45 to 60mph all day, often 70mph western high tops.
Effect of the wind on you?
Difficult walking conditions, any mobility challenging around some high tops. Marked wind chill despite mild air.
How Wet?
Rain often heavy, setting in afternoon
Several hours of constant rain from dawn, heavy over western hills, fading for a few hours to lighter rain and drizzle, but likely during afternoon prolonged heavier rain setting in again onward into evening.
Cloud on the hills?
Extensive, lowest southwest
Blanket low cloud across hills, to lower elevations near coasts in west. Mostly above 600m inland with some higher breaks north/east of the A5.
Chance of cloud free summits?
Below 10%
Sunshine and air clarity?
Overcast and murky, better visibility locally toward north if drier for a time.
How Cold? (at 900m)
Rising from before dawn to 6C, soon up to 8 or 9C; only small fall with height. Feeling like -5C directly in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 12th November 2025
Last updated
Sun 9th Nov 25 at
4:00PM
How windy? (On the summits)
South-southwesterly 20-30mph, possibly less for a time, but risk strengthening later, 40mph into evening.
Effect of the wind on you?
Risk blustery over exposed terrain, though may be fairly small for periods. Later in day possibly deteriorating.
How Wet?
Patchy drizzle, then risk heavier rain
Very wet underfoot with streams in spate and flooding following previous rain. Patchy drizzly rain mostly western hills, increasing risk with time of more persistent then heavier rain returning.
Cloud on the hills?
Fairly extensive, some breaks north
Banks of cloud from lower elevations upward in the morning, may linger particularly western hills. Breaks mostly Carneddau. Lowering widely in rain.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast, varied layers of cloud. Misty areas may linger, locally good visibility mainly toward north.
How Cold? (at 900m)
8C. Feeling like 0C or below if in stronger wind.
Freezing Level
Above the summits
Planning Outlook
Unsettled south-southwesterlies through midweek, periods of heavy rain widespread, further flooding for Wales, the Lakes and southwest Scotland. Mountain gales on Tuesday for England, Wales, S & E Scotland. Cooler than recently in Scotland, but still generally mild England and Wales by day and night. Later in the week, colder air pushes into Scotland, dropping below freezing over the mountains, with some snow over higher terrain in the Highlands on Thursday-Friday; strong to gale force easterly winds develop widely. Colder northeasterly air is expected to become more widespread into the weekend and next week.