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 near or just above freezing 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 near or just above freezing 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
Sunday 13th April 2025
Last updated
Sat 12th Apr 25 at
3:36PM
Summary for all mountain areas
A notable drop of temperature compared to recent days - just below freezing over higher mountains in Scotland with considerable wind chill. Showers most frequent in western Scotland, but forming more widely inland during day, with snow and hail. Scattered showers England & Wales, fading from the west in afternoon.
Headline for Eryri / Snowdonia National Park
Chillier with occasional showers, mostly morning, cloud lifting.
How windy? (On the summits)
West turning southwesterly; 15 to 25mph, occasional 30mph higher tops. From dusk into night for a few hours southerly 40-45mph.
Effect of the wind on you?
Walking starting to be impeded in higher winds, stability at times challenged on exposed ridges. Deteriorating for a time into night.
How Wet?
Showers, snow highest tops, fading
Scattered mostly brief showers passing eastwards during the day. Falling as sleet or snow on higher terrain above 800-900m. Tending to fade from west in afternoon. Showery rain returns into night.
Cloud on the hills?
Rising toward or above tops
Covering mid and upper slopes at dawn. Bases rising to 800-900m through the day, though variable as showers come and go, breaking at times above the tops in the afternoon.
Chance of cloud free summits?
30%, rising to 70% afternoon
Sunshine and air clarity?
Glimpses of sun. Visibility soon improving, but then varying, at times very good, occasionally poor in showers.
How Cold? (at 900m)
1C. Wind chill like -7C on high tops.
Freezing Level
Around 1000m or just above.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 14th April 2025
Last updated
Sat 12th Apr 25 at
3:36PM
How windy? (On the summits)
South to southwesterly, 25 to 35mph, up to 40-45mph early in day.
Effect of the wind on you?
Blustery, affecting comfortable walking and balance over higher exposed terrain. Considerable wind chill.
How Wet?
Rain then showers
Frequent or persistent heavy rain in the morning associated with a front, sleet or possibly some snow on higher summits. Then scattered showers, some heavy, with hail, chance of isolated thunder & lightning.
Cloud on the hills?
Lifting toward high tops, some breaks
Covering hills to mid-slopes in morning rain, locally lower west coast. Cloud base rising to upper slopes, some breaks to tops forming during afternoon, best toward north.
Chance of cloud free summits?
30% rising to 60%
Sunshine and air clarity?
Glimpses of sun developing. Visibility poor during precipitation, becoming very good away from showers.
How Cold? (at 900m)
2 or 3C. Wind chill feeling like -7 to -10C.
Freezing Level
Just above highest tops.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 15th April 2025
Last updated
Sat 12th Apr 25 at
3:36PM
How windy? (On the summits)
Westerly 20mph at first, soon becoming variable 10-15mph or less.
Effect of the wind on you?
Soon mostly small.
How Wet?
Local brief showers
Mostly brief showers, near to the coast in the morning, then inland by afternoon.
Cloud on the hills?
Lifting mostly above tops
Patches on some mid to upper slopes during the morning, lifting above the tops. Brief patches lowering in showers.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Sun and high-level cloud. Visibility mostly very good.
How Cold? (at 900m)
1 to 3C.
Freezing Level
1000m from dawn, rising just above highest summits.
Planning Outlook
Wetter conditions through the week ahead as complex areas of low pressure circulate slowly around the British Isles, bringing cloud and spells of rain and showers, at times heavy, though day-to-day detail is very uncertain. Some drier and brighter periods. Temperatures generally cooler, near-freezing on higher summits, especially Scotland, where snow will fall at times on tops. Variable wind speeds, squally in showers, mostly south to southwesterly, then later in week southeasterly, may strengthen locally considerably for short-periods during the week.