Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Sunday'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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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
Sunday 2nd August 2026
Last updated
Sat 1st Aug 26 at
2:07PM
Summary for all mountain areas
A temporary ridge of high pressure will bring a fine day with light wind almost everywhere. Cloud will be above nearly all summits and the air will be very clear. Nevertheless a few showers at first NW Scotland and later cloud thickening many areas ahead of rain.
Headline for Eryri / Snowdonia National Park
Light wind; very clear air; sunshine gradually weakening.
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 very unlikely
Risk of a burst of rain from about dusk.
Cloud on the hills?
Not expected
Chance of cloud free summits?
Almost certain
Sunshine and air clarity?
Sunshine will give way by about midday 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
Sat 1st Aug 26 at
2:07PM
How windy? (On the summits)
Easterly 20 to 25mph.
Effect of the wind on you?
Mostly fairly small.
How Wet?
Rain now and again
Frequently dry, although occasional rain - perhaps no more than the odd burst - most likely toward evening, when risk of a thundery burst.
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?
80%
Sunshine and air clarity?
Sunshine, often weak, through high level cloud. Some haze, although generally very good visibility.
How Cold? (at 900m)
15C
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 4th August 2026
Last updated
Sat 1st Aug 26 at
2:07PM
How windy? (On the summits)
Generally southerly 20 or 25mph.
Effect of the wind on you?
Mostly fairly small - gusty near showers
How Wet?
Risk heavy showers
Confidence low: Patches drizzly rain possible at first before becoming dry. In afternoon heavy, possibly thundery showers may develop.
Cloud on the hills?
Extensive, although may clear at times afternoon
Confidence low: In morning, expect blanket of fog across higher ares, sometimes the cloud below 500m or 300m near Lleyn peninsula. Will improve as general cloud base lifts to 500 to 700m, and perhaps clears at times east Wales and north of A5.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Occasional sunshine. Hazy, and visibility poor in rain.
How Cold? (at 900m)
14C
Freezing Level
Above the summits.
Planning Outlook
Confidence in the detail remains low through the first half of the coming week. Areas of rain (and accompanying low cloud) will circulate across Scotland - quite large falls in some areas. Although total rain fairly small across England and Wales, bursts of rain, in places thundery, will occur in some areas. Later in the week, very little rainfall England and Wales, whilst mainly in western Scotland, some rain from time to time - though probably total rainfall small. Terrain remains exceptionally dry, ('tinder dry') except for W Scotland.