Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today'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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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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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.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Wednesday 21st January 2026
Last updated
Tue 20th Jan 26 at
4:30PM
Summary for all mountain areas
Rain and hill snow in eastern Scotland in the morning tends to ease off; largely dry toward west. E-SE'ly gales in north, lower wind speeds S & W Highlands, but increasing again later. In England & Wales, upland gales all day, rain and initially snow on tops extending north, becoming milder from the south.
Headline for Eryri / Snowdonia National Park
Upland gales. Rain and low cloud becomes widespread.
How windy? (On the summits)
East to southeasterly soon strengthening from dawn to 40-50mph, speed may vary a little, but at times gusts 60mph around high tops.
Effect of the wind on you?
Walking arduous over exposed terrain, gusts frequently knocking you off balance. Significant wind chill.
How Wet?
Rain or some snow high tops, becoming persistent
Largely dry start, for a few hours in north, but pulses of rain moving in from the south, becoming persistent steadier rain at times, some heavier bursts mixed in, initially snow on high tops, turning all to rain higher up. Heavy showery rain onward into evening.
Cloud on the hills?
Fairly extensive
Some early breaks in northwestern areas toward high tops, but soon lowering to cover most higher hills, from 500 to 700m upward, higher cloud bases toward the north, some breaks Carneddau.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Overcast and increasingly dull, poor visibility in rain, locally better north mainly in morning.
How Cold? (at 900m)
Around 0C, rising later in day to 2C. Wind chill feeling like -10 to -15C where exposed on higher areas.
Freezing Level
900-1000m, briefly lower in morning, but tending to rise into afternoon above freezing to higher tops.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 22nd January 2026
Last updated
Tue 20th Jan 26 at
4:30PM
How windy? (On the summits)
Easterly 35 to 50mph, stronger gusts in places around high tops and downslope to west; strongest northern areas.
Effect of the wind on you?
Challenging conditions, difficult in exposure and gusts knocking you off balance not just on tops. Significant wind chill.
How Wet?
Patchy rain
A little rain on and off, amounts mostly small, but risk odd heavier bursts drifting up from the south, risk hail.
Cloud on the hills?
Fairly extensive on tops
Often capping higher slopes, most persistent mid-Wales, but bases varying. Highest bases northwest Snowdon group, clearing above tops occasionally.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Largely cloudy, some brighter moments western areas, sun may break through. Visibility good, but some haze likely.
How Cold? (at 900m)
2C. Wind chill feels as cold as -15C.
Freezing Level
Just above freezing on highest tops.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 23rd January 2026
Last updated
Tue 20th Jan 26 at
4:30PM
How windy? (On the summits)
Easterly 40 to 50mph, stronger gusts around high tops and downslope. Risk strengthening after dark.
Effect of the wind on you?
Challenging conditions, difficult in exposure and gusts knocking you off balance not just on tops. Significant wind chill.
How Wet?
Rain/sleet mostly afternoon
A little rain on and off, amounts mostly small, but increasingly frequent through afternoon, falling as snow on the tops and sleet across high terrain.
Cloud on the hills?
Fairly extensive on tops
Often capping higher slopes, most persistent mid-Wales, but bases varying. Highest bases northwest Snowdon group, clearing above tops occasionally.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Largely cloudy, some brighter moments western areas, sun may break through. Visibility good, but some haze likely.
How Cold? (at 900m)
0 or 1C. Wind chill feels as cold as -15C.
Freezing Level
900-1000m
Planning Outlook
Sustained gale force easterlies over most mountains later this week, powerful gusts downslope toward west; severe chill factor. Colder air and lowering freezing level moves into Scotland Thursday-Friday, much mountain terrain then frozen into the weekend and early next week. Substantial snowfalls over eastern Scottish hills later this week, drier to the west. Dropping just below freezing on high tops in England and Wales - a mix of rain and high level snow; colder further south over the weekend. Circulating low pressure and cold air into next week, with further snowfalls likely. Lower wind speeds early in the new week, but then likely increasing E-SE'ly again.