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.
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 7th May 2026
Last updated
Wed 6th May 26 at
4:26PM
Summary for all mountain areas
South to southwesterly winds giving considerable chill factor over high terrain, up to gale-force over coastal northwest Highlands. Areas of showery rain, most widespread into the afternoon when some clusters of heavier rain forming. Rain generally becomes more persistent toward northwest Scotland.
Headline for Eryri / Snowdonia National Park
Breezy. Showers form, locally heavier afternoon onward.
How windy? (On the summits)
Southerly 15 to 20mph, strongest west coastal areas, local 25mph at times on and nearest to Llyn peninsula.
Effect of the wind on you?
Fairly small, but feeling chilly in exposure on higher terrain.
How Wet?
Showery rain, mostly afternoon
Largely dry start, odd showers in morning. Showery rain affecting many hills into afternoon when rain becomes locally heavier and more frequent over a few hours, but whilst nearby stays more often dry. Showers fade toward dusk.
Cloud on the hills?
Banks high west slopes and summits
Some varied fog banks in the morning, possibly to lower slopes, these lifting after dawn towards 800m with regular higher breaks. Greatest risk of cloud caps lingering on highest tops and upper western slopes, and more extensive over high ground in heavier showers.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Glimpses of sun. Excellent visibility but deteriorating during rain.
How Cold? (at 900m)
4 to 6C, or locally 7C Carneddau in the afternoon. Feeling like -3C to later 0C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 8th May 2026
Last updated
Wed 6th May 26 at
4:26PM
How windy? (On the summits)
Generally south-southeasterly 10-15mph, often less and direction varying.
Effect of the wind on you?
Mostly small.
How Wet?
Showers, most afternoon
Scattered showers most of the day, dry periods; a rising risk of locally heavy showers in the afternoon, moving around slowly, some places escape dry.
Cloud on the hills?
Lifting to summits, may be well-broken
Fog at various heights in the morning, but well-broken below 600m. Lifting through morning to 800m or higher, a chance of summit breaks too, but then a risk of more often capping summits if heavier afternoon showers occur.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Glimpses of sun. Variable visibility, very good during drier periods, may be very poor if heavier showers occur.
How Cold? (at 900m)
5C rising to 9C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 9th May 2026
Last updated
Wed 6th May 26 at
4:26PM
How windy? (On the summits)
Northeasterly 20 to 25mph, risk 30mph in places, gusty around higher mountains.
Effect of the wind on you?
Feeling blustery and rather cool, more noticeably gusty around some tops and ridges, affecting balance in exposure.
How Wet?
Rain rare if any
Most likely dry. Chance of odd spots if high cloud thickens. Low risk of showery rain forming more widely later.
Cloud on the hills?
Mostly little, risk cloud northern tops
Some patchy cloud banks forming over higher slopes, most likely toward the north and east of the region, greatest risk on Carneddau. Western hills more often clear, but patches if showers form.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Sun may be often weak through a veil of high cloud. Visibility very good.
How Cold? (at 900m)
5 to 7C. Feeling like 0C or just below if exposed to wind.
Freezing Level
Above the summits.
Planning Outlook
A notably chilly outlook for May into the weekend and early next week, with higher Scottish mountains almost continuously below freezing point possibly onward through much of next week as northwesterly air prevails. After a warmer end to this week, higher tops in England and Wales also dropping intermittently to freezing point from the weekend onward. Wind-speed varying day-to-day, but prepare for often considerable chill-factor on all mountains. Some frost overnight into valleys when skies are clear. Broadly showery through mid-May, plus some fronts bringing persistent rain most common in northwestern Scotland, often falling as snow on mountain tops, sometimes to below 600m. Drier intervals too, some days with fewer showers and broken cloud lifting above the summits, varying locally day-to-day.