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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Monday 24th March 2025
Last updated
Sun 23rd Mar 25 at
4:08PM
Summary for all mountain areas
Westerly winds strengthening, reaching gale force over tops in the Highlands. Rain moves into northwest Scotland, setting in heavier during afternoon; patchy rain extending southeastwards later. Dry all daylight for England, Wales and southern Scotland, with good amounts of sunshine.
Headline for Eryri / Snowdonia National Park
Light winds middle of day. Dry with sun and broken cloud.
How windy? (On the summits)
Northerly 15-20mph early morning, easing to 10mph for a few hours; turning westerly afternoon, later 20mph, or 25mph by dusk.
Effect of the wind on you?
Mostly small
How Wet?
Rain very unlikely
Chance of an isolated drizzly shower toward north coast early morning.
Cloud on the hills?
Patches for a time, lifting and clearing
Banks of cloud above some hills mainly toward north and east early morning above 500-700m. Lifting to upper slopes, patches may come and go for a few hours, but many tops often clearing, cloud largely above hills into afternoon.
Chance of cloud free summits?
50% rising to 80%
Sunshine and air clarity?
Patchwork of sun. Excellent visibility.
How Cold? (at 900m)
2C rising to 4C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 25th March 2025
Last updated
Sun 23rd Mar 25 at
4:08PM
How windy? (On the summits)
Northwesterly 20 to 25mph, occasional 30mph around highest tops.
Effect of the wind on you?
Feeling blustery and chilly around higher tops, starting to affect balance on exposed ridges.
How Wet?
A little rain at first
Patchy rain and drizzle from before dawn into the early morning, persistent for an hour or so, clearing southwards to be dry by mid-late morning.
Cloud on the hills?
Covering hills for a few hours, breaking
Shrouding the hills above 400 to 600m from dawn, lowest near coast. Lifting to upper slopes during morning, then increasingly breaking to tops in afternoon.
Chance of cloud free summits?
10% rising to 70%
Sunshine and air clarity?
Cloudy morning, sun breaking through in afternoon, later increasingly sunny. Visibility reduced in rain, then very good.
How Cold? (at 900m)
3 to 5C. Wind chill feeling like -3 to -5C.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 26th March 2025
Last updated
Sun 23rd Mar 25 at
4:08PM
How windy? (On the summits)
Southwesterly, strengthening 20 to 35mph, possibly 40mph higher mountains toward evening.
Effect of the wind on you?
Increasingly blustery, affecting balance on exposed ridges, walking becoming more strenuous with marked wind chill later.
How Wet?
Rain not expected
Cloud on the hills?
Occasional patches
Mist patches some valleys and lower hill slopes at first, mostly dispersing, but some patches may drift over higher slopes for periods in west; mostly lifting above tops.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Some sun through thin high cloud. Visibility very good.
How Cold? (at 900m)
4 to 6C. Wind chill feeling like -7C as speeds increase.
Freezing Level
Above the summits; possible slight frost some valleys at dawn.
Planning Outlook
A mixed westerly regime for the next week to ten days - fronts coming in from the west bringing spells of rain, interspersed with better days under ridges of high pressure. Rain most frequent in western Scotland. Frequently windy, periods of gale force wind over the mountains. Temperature varied, sometimes just below freezing on higher Scottish summits, with some showers of snow at times on the Munros - chillier more widely by Friday into Saturday as wind turns northwesterly for a time.