Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
Clear
Excellent or superb visibility, no navigation issues.
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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
Clear
Excellent or superb visibility, no navigation issues.
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
Sunday 19th April 2026
Last updated
Sat 18th Apr 26 at
4:00PM
Summary for all mountain areas
Fine conditions for many places with patchy cloud and sun. A chilly breeze will be strongest in northern Scotland. Brief showers with snow flurries on hills in northwest Scotland in the morning. Well scattered mostly light showers across Scotland and northern England into afternoon and early evening.
Headline for Eryri / Snowdonia National Park
Light wind, sunshine and broken cloud.
How windy? (On the summits)
Northerly 10 to 15mph, at times less.
Effect of the wind on you?
Generally small, but feeling chilly especially in the morning if exposed on tops.
How Wet?
Any precipitation unlikely
Cloud on the hills?
Mostly northern tops in morning
Patchy cloud mostly on northern slopes early morning, plus local mist some valleys at dawn. Patchy banks may linger on middle and upper slopes to the north for a time, but dissipating for cloud-free summits by afternoon.
Chance of cloud free summits?
50% north at dawn, rising to 80%
Sunshine and air clarity?
Mostly sunny, some thin high cloud around, and some fair weather cloud building afternoon. Excellent visibility.
How Cold? (at 900m)
1C from dawn, rising to 3 to 5C, mildest mid-Wales afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 20th April 2026
Last updated
Sat 18th Apr 26 at
4:00PM
How windy? (On the summits)
Easterly, 15mph, some gusty areas.
Effect of the wind on you?
Small effect on walking, but feeling rather chilly on exposed high tops.
How Wet?
Scattered showers
A few brief showers mainly toward north coastal areas in the morning, possible soft hail or a flurry of snow on higher slopes. Then a scattering of brief showers more widely afternoon, but locally often dry.
Cloud on the hills?
Capping some tops in morning, lifting
Patchy cloud banks mostly capping Carneddau above 700m in morning, occasionally drifting over higher Snowdon group for a time. Lifting higher up, leaving most cloud above hills afternoon.
Chance of cloud free summits?
60% rising to 90%
Sunshine and air clarity?
Patchwork of cloud and sun; best near west coast in the morning. Visibility often excellent, briefly reduced in showers.
How Cold? (at 900m)
0C rising to 3C afternoon. Where exposed to wind, feeling like -5C early in day, later -2C.
Freezing Level
Slight frost in valleys and close to freezing on highest tops above 900m from dawn. Rising above freezing to all tops.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 21st April 2026
Last updated
Sat 18th Apr 26 at
4:00PM
How windy? (On the summits)
Easterly 25 to 35mph, very gusty in places around higher tops, through passes and locally downslope to west.
Effect of the wind on you?
Considerable wind chill in exposure, blustery spots may affect balance and make walking uncomfortable.
How Wet?
A little rain
Patchy light rain or brief light showers, mostly east Wales.
Cloud on the hills?
Varied then mostly lifting
Cloud banks above 600-700m, mostly areas from Carneddau to Berwyn and Bala in morning, more broken in west. Tending to lift higher and may gradually break up.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Fairly cloudy, some brighter sunnier moments mostly west coastal areas. Visibility very good.
How Cold? (at 900m)
1C rising to 3C afternoon. Directly in the wind, feeling like -7 to -10C.
Freezing Level
Near to freezing on highest summits in morning, then further above all tops.
Planning Outlook
A cool northeasterly wind into Monday brings a scattering of showers, but plenty of dry weather too. High pressure stays nearby to the north of Britain through the week ahead giving a run of dry days with sunshine typically best in the west, but many mountains often free of low cloud. A cool easterly wind prevails for England and Wales, strongest toward the south, whilst Scotland has often lighter winds. Some overnight frosts. Daytime temperatures near average, typically a few degrees above freezing on high tops through midweek. Dry, settled conditions are likely to continue into next week.