Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday'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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
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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.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Clear
Excellent or superb visibility, no navigation issues.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 8th August 2026
Last updated
Fri 7th Aug 26 at
3:59PM
Summary for all mountain areas
Ranging from persistent gales, and increasingly toward west and north, rain and fog across the Scottish Highlands to blustery but largely dry Cumbria and S Scotland. Extensively warm and sunny elsewhere.
Headline for Eryri / Snowdonia National Park
Fine warm and sunny - beware sunburn.
How windy? (On the summits)
Southerly 20mph although lighter post dawn and again in evening. Above about 800m on Snowdon range, probably 25mph for several hours through middle of day
Effect of the wind on you?
Fairly small.
How Wet?
Rain not expected
Cloud on the hills?
Little if any
Chance cloud coming and going above 400m on hills toward Lleyn peninsula
Chance of cloud free summits?
90%
Sunshine and air clarity?
Extensive or unbroken bright sunshine. Excellent visibility.
How Cold? (at 900m)
9C rising to 13 or 18C, coldest west coastal slopes.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 9th August 2026
Last updated
Fri 7th Aug 26 at
3:59PM
How windy? (On the summits)
Westerly 20 to perhaps 30mph higher tops near and north of Snowdon.
Effect of the wind on you?
Mostly fairly small, although may well impede walking at times on higher summits northern Snowdonia NP.
How Wet?
Little or perhaps no rain
Chance of a little rain, most likely northernmost hills, where later in day may turn more widely drizzly.
Cloud on the hills?
Generally confined to or above higher areas
Some uncertainty: Cloud may not clear above 800-1000m westernmost slopes, and possibility of patches coming in - probably afternoon onwards - below 300m near west coast and 600m well inland. Northwest Wales most likely to be affected by this.
Chance of cloud free summits?
450%
Sunshine and air clarity?
Patchy sunshine; very good visibility - although will deteriorate in rain.
How Cold? (at 900m)
11 to well inland in afternoon 15C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 10th August 2026
Last updated
Fri 7th Aug 26 at
3:59PM
How windy? (On the summits)
Northwesterly 15mph, dropping to very low speeds by afternoon.
Effect of the wind on you?
Becoming negligible
How Wet?
Rain very unlikely
Cloud on the hills?
Mostly or all clearing during morning
Snowdon range: Cloud base rising through morning to 800 to about 1050m (some uncertainty at present as to whether highest tops will clear). Elsewhere, little if any.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Periods of sun - perhaps through areas of high level cloud and the Snowdon range may be intermittently cloudy. Excellent superb visibility.
How Cold? (at 900m)
8C, rising to 13 to 17C, warmest well inland.
Freezing Level
Above the summits.
Planning Outlook
Extensively fine and warm early next week - indeed very little rain or low cloud and frequently light winds England and Wales all week. Generally less settled after midweek northwestwards across Scotland where occasional rain and areas of low cloud.