Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday'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.
Clear
Excellent or superb visibility, no navigation issues.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind 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.
Clear
Excellent or superb visibility, no navigation issues.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 10th August 2026
Last updated
Sun 9th Aug 26 at
2:06PM
Summary for all mountain areas
Windy in northern and western Scotland, particularly morning. Elsewhere, the breeze dropping away. Periods of bright sunshine, particularly England and Wales - beware sunburn. Only occasional sunshine toward NW Scotland.
Headline for Eryri / Snowdonia National Park
Wind dropping. Bright sunshire.
How windy? (On the summits)
Northwesterly 15mph, dropping to very low speeds by afternoon.
Effect of the wind on you?
Becoming negligible
How Wet?
Low risk isolated shower at first
Possibly isolated brief showers Snowdon range until mid morning. - then dry.
Cloud on the hills?
Cloud confined above the summits by late morning
Snowdon range: Cloud base rising through morning, soon to 800m and by late morning above 1000m. Will then all clear - probably Carneddau slowest to clear. Elsewhere, little if any.
Chance of cloud free summits?
Almost certain by midday
Sunshine and air clarity?
Extensive sunshine - perhaps through areas of high level cloud and the Snowdon range may be intermittently cloudy (most likely morning. Excellent or superb visibility.
How Cold? (at 900m)
8C, rising to 13 to 17C, warmest well inland.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 11th August 2026
Last updated
Sun 9th Aug 26 at
2:06PM
How windy? (On the summits)
Southerly 10 or 15mph.
Effect of the wind on you?
Mostly negligible
How Wet?
Rain not expected
Cloud on the hills?
Very unlikely
Chance of cloud free summits?
90%
Sunshine and air clarity?
More or less unbroken sunshine. Excellent or superb visibility - haze may develop east Wales.
How Cold? (at 900m)
11C rising to 21C
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 12th August 2026
Last updated
Sun 9th Aug 26 at
2:06PM
How windy? (On the summits)
Southerly 10-15mph.
Effect of the wind on you?
Negligible
How Wet?
Rain very unlikely
Cloud on the hills?
Little if any
Chance of cloud free summits?
90%
Sunshine and air clarity?
Extensive sunshine. Good visibility although a haze.
How Cold? (at 900m)
14 rising to 21C.
Freezing Level
Above the summits.
Planning Outlook
Chance of bursts of rain, possibly locally thundery on Wednesday NW England northwards, with further occasional rain (and low cloud) later in the week, mainly across the W & NW Highlands. The almost completely dry and warm weather will persist elsewhere. Underfoot conditions will remain exceptionally dry. There may well be little change in the pattern into next week.