Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday'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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Hazy, some fog banks
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Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Bright sunshine
Beware of sunburn from bright spring sunshine, despite feeling cool in any breeze on higher terrain.
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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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Hazy, some fog banks
Distant views reduced by haze, locally foggy for a time in valleys and some hill slopes.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Bright sunshine
Beware of sunburn from bright spring sunshine, despite feeling cool in any breeze on higher terrain.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 20th March 2026
Last updated
Thu 19th Mar 26 at
3:00PM
Summary for all mountain areas
Southwesterly winds over the Highlands will be gusty in places, strongest toward far northwest where locally up to gale-force. Cloud banks near Scottish west coast, otherwise largely clear with strong early spring sunshine, beware sunburn. Early areas of fog clearing. Light winds England and Wales.
Headline for Eryri / Snowdonia National Park
Light winds. Warm sunshine.
How windy? (On the summits)
Easterly or variable 10mph or less.
Effect of the wind on you?
Small.
How Wet?
Precipitation not expected
Cloud on the hills?
Hills clear, early low fog east
Patchy fog in valleys from dawn, briefly lifting onto some hill slopes for a time in eastern areas, but all dispersing by middle of day.
Chance of cloud free summits?
Practically certain.
Sunshine and air clarity?
Sun and thin high cloud. Visibility excellent on hills, some haze lower down.
How Cold? (at 900m)
6 to 8C, some cooler spots at first, then some slightly warmer spots by afternoon.
Freezing Level
Above the summits, but slight frost in valleys and some sheltered higher areas at dawn.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 21st March 2026
Last updated
Thu 19th Mar 26 at
3:00PM
How windy? (On the summits)
Variable 10mph or less.
Effect of the wind on you?
Negligible.
How Wet?
Precipitation not expected
Cloud on the hills?
Early low-level fog clearing
Fog mostly confined to valleys in the morning, some patches briefly rising upslope, mainly eastern hills, otherwise the mountains clear.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Mostly sunny, thin high cloud. Hazy views.
How Cold? (at 900m)
7C, rising slightly into afternoon.
Freezing Level
Above the summits, but patchy frost in valleys and sheltered higher areas around dawn.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 22nd March 2026
Last updated
Thu 19th Mar 26 at
3:00PM
How windy? (On the summits)
Westerly or variable, 15 to 20mph, may be variable lower speeds for periods toward mid-Wales.
Effect of the wind on you?
Fairly small.
How Wet?
Rare if any rain
Chance of a few spots of rain as high cloud thickens, mainly into the afternoon.
Cloud on the hills?
Early fog clearing, patchy cloud west
Some areas of fog in valleys and lower hill slopes in the morning, briefly drifting upslope, but clearing to leave clear hills. Occasional cloud caps drift over higher tops in northwest, may fill in later.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Mostly sunny morning, giving way to some thickening high cloud from northwest, may become more overcast with time. Visibility good, but some haze.
How Cold? (at 900m)
5 to 7C, likely warmest in morning.
Freezing Level
Above the summits. Slight frost inland valleys at dawn.
Planning Outlook
High pressure slowly retreats over the weekend to allow west-southwesterly winds to move into Scotland, bringing more cloud to the northwest and some drizzle on Saturday, though most places remain dry. By Sunday, stronger westerly winds and a front passing eastwards with a spell of rain followed by lowering temperatures and showers with snow and hail over the hills in Scotland. A chilly start to the new week, near or below freezing over higher mountains, particularly Scotland. Changeable westerlies during next week, windy for all at times, showery conditions most common in western Scotland. High pressure to the south rebuilds at times to settle things again.