Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Saturday'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.
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.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Click an icon for more information or click here for a key to all icons.
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.
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.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 1st August 2026
Last updated
Fri 31st Jul 26 at
2:18PM
Summary for all mountain areas
England and Wales extensively dry with periods of sun and particularly Wales fairly light wind. Increasingly showery northwards across Scotland, although mostly confined to afternoon eastern mountains. Fairly chilly, particularly morning.
Headline for Eryri / Snowdonia National Park
Light wind; periods of sun. Small risk brief shower.
How windy? (On the summits)
Westerly 10-15mph, perhaps occasionally 20mph higher tops (mainly Snowdon range).
Effect of the wind on you?
Small.
How Wet?
Substantially or completely dry
Chance of the odd brief shower.
Cloud on the hills?
Early cloud largely clears summits
Some terrain above 700-800m starts in cloud, lowest and most widespread western hills of Snowdon range. Bases lift, clearing most or all summits by mid or late morning. Then only isolated, if any cloud on higher tops.
Chance of cloud free summits?
Rising to greater than 90%
Sunshine and air clarity?
Extensive bright sunshine. Very good becoming excellent or superb visibility.
How Cold? (at 900m)
7 rising to 10 to 13C, warmest eastern hills.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 2nd August 2026
Last updated
Fri 31st Jul 26 at
2:18PM
How windy? (On the summits)
Generally easterly 10mph. Toward evening will begin to strengthen, perhaps 20mph by dusk.
Effect of the wind on you?
Negligible.
How Wet?
Rain unlikely until almost dusk
Small risk rain toward or more likely after dusk.
Cloud on the hills?
Not expected
Chance of cloud free summits?
Almost certain
Sunshine and air clarity?
Sunshine will give way as high cloud thickens. Excellent visibility.
How Cold? (at 900m)
9C rising to 15C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 3rd August 2026
Last updated
Fri 31st Jul 26 at
2:18PM
How windy? (On the summits)
Easterly 20 to 25mph, possibly sometimes 30mph; very gusty in places.
Effect of the wind on you?
Mostly fairly small, but expect sudden gusts to develop (sometimes on lower slopes) making balance tricky.
How Wet?
Rain now and again
Low confidence as general of low pressure develops across Britain: Occasional rain likely, mostly afternoon or evening, when there may be heavy bursts.
Cloud on the hills?
Patches may form in rain
Most or all hills cloud free, probably all day. But in rain, most likely only later in day fog my begin to shroud some higher slopes, and possibly here and there extend to lower slopes.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Sunshine, sometimes weak, through thin high cloud. Some haze, although generally very good visibility.
How Cold? (at 900m)
15C
Freezing Level
Above the summits.
Planning Outlook
Still a few showers W & NW Highlands on Sunday, and threat of some rain by dusk western mountains. The rain will be ahead of a very complicated weather pattern early next week; areas of rain will drift slowly across central and mainly northern Britain, but the distribution of rain (and associated low cloud) remains very uncertain. Despite some recent rain (mainly in Scotland), away from the W & NW Highlands terrain remains exceptionally dry: 'tinder dry'.