Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today'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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Hazy, some fog banks
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Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
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
Monday 9th March 2026
Last updated
Sun 8th Mar 26 at
3:30PM
Summary for all mountain areas
Humid air will bring extensive low cloud and bursts of showery rain to the mountains. However, in places breaks in the low cloud will allow sunshine through, whilst the cloud base will be very varied - making detail difficult. Windy northern and western Scottish Highlands.
Headline for Eryri / Snowdonia National Park
Bursts of showery rain. Fog tending to lift.
How windy? (On the summits)
South to southwesterly 10 to on highest summits 15mph
Effect of the wind on you?
Small
How Wet?
Patchy rain; very little in total
Bursts, probably brief, of showery rain now and again. Some places may well stay dry, and total rainfall everywhere small.
Cloud on the hills?
Very extensive - although cloud base rising, perhaps breaking.
Very likely blanket of fog from lower slopes up from dawn - though some breaks to some higher slopes. Cloud base will rise from late morning, and by afternoon, most cloud will be above 600 to 800m, and may substantially clear.
Chance of cloud free summits?
10% rising to 50%
Sunshine and air clarity?
Widely dull and misty or murky morning. Patches of sunshine, perhaps extensive, will gradually come through, and visibility probably improving to be very good.
How Cold? (at 900m)
4C
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 10th March 2026
Last updated
Sun 8th Mar 26 at
3:30PM
How windy? (On the summits)
South to on higher slopes southwesterly; increasingly through day from 20-30mph to 30 to 50mph (strongest Snowdon range).
Effect of the wind on you?
Notable wind chill and balance affected by the wind on exposed higher slopes - increasingly so, NW Wales late in day.
How Wet?
Little or no rain until dusk
Risk of an isolated brief burst of rain. Rain more widely after dark.
Cloud on the hills?
Will come and go: may clear for a few hours before lowering afternoon
Morning: cloud base widely rising to or above 750-900m, but may persist near Lleyn peninsula. Afternoon: Will deteriorate from west as cloud forms widely above 600 to 750m, but may well form below 300m Lleyn peninsula to Snowdon.
Chance of cloud free summits?
30%, but 70% for a few hours middle of day.
Sunshine and air clarity?
Glimpses of sun some lower slopes - though possibly more extensive east Wales and north of the Carneddau. Excellent visibility though a haze westernmost areas.
How Cold? (at 900m)
3C - only slow drop in temperature higher up. Will feel as cold as minus 6C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 11th March 2026
Last updated
Sun 8th Mar 26 at
3:30PM
How windy? (On the summits)
Westerly up to 45mph post dawn. Will drop to typically 30 or on higher tops Snowdon range 35mph by midday.
Effect of the wind on you?
Expect considerable wind chill and walking to be arduous particularly at first.
How Wet?
Hail and snow showers
Occasional hail and above 750m snow showers.
Cloud on the hills?
Extensively covering higher areas
In precipitation, cloud temporarily forming below 400 to 600m (lowest morning westernmost slopes). Otherwise, by midday frequently between 750 and 1000m.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Bursts of sunshine, particularly afternoon. Visibility mostly very good or excellent.
How Cold? (at 900m)
0C rising slowly toward 2C. Will feel like minus 10C directly in the wind.
Freezing Level
900m slowly rising to just above highest summits.
Planning Outlook
Later this week - with the current mostly cloudy and hazy or murky conditions clearing on Tuesday night. Bouts of upland severe or storm force winds will reach the Scottish Highlands and gales periodically affecting other mountain areas. Freeze thaw cycles will occur on higher areas south from S Scotland whilst the Scottish Highlands experience infrequent thaw, with fresh snow sometimes reaching lower slopes, whilst extensive higher up.