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.
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.
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 14th June 2026
Last updated
Sat 13th Jun 26 at
3:52PM
Summary for all mountain areas
Some early drizzle and patchy light rain in northern Scotland fades by afternoon. Elsewhere dry all day and often sunny though some high cloud weakening sun in places; sun may be more patchy east Scotland and later northern England. Warm southern Pennines and Wales. Light wind, though starting blustery in east Scotland.
Headline for Eryri / Snowdonia National Park
Weak sunshine, occasional thicker cloud, mild to warm
How windy? (On the summits)
Northwesterly 15mph at dawn, gusting 20-25mph over high tops and passes. Easing and shifting northerly, 10mph and often less through afternoon and direction often variable.
Effect of the wind on you?
Some notable gusts over high terrain just at and before dawn, but soon small.
How Wet?
No rain expected
Cloud on the hills?
Likely largely clearing the summits by afternoon
Variable banks of cloud above the mid-slopes at dawn, mostly northern areas and towards east Wales, some thin mist in sheltered valleys as well; many slopes start clear. Cloud will lift to above 800m, mostly dissipating, but clinging to northern slopes for a few extra hours.
Chance of cloud free summits?
Rising to 80%
Sunshine and air clarity?
Sun increasingly breaks out but weakened by high cloud, and some moments of thicker high cloud too. Very good visibility.
How Cold? (at 900m)
6C rising to 11C. Hills south of Yr Wyddfa group likely a degree warmer.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 15th June 2026
Last updated
Sat 13th Jun 26 at
3:52PM
How windy? (On the summits)
South-southeasterly 15-25mph, notable gusts early, and may rise to sustained 30mph for a time afternoon.
Effect of the wind on you?
Walking becoming impeded on high terrain, perhaps moments of strenuous walking during strongest gusts.
How Wet?
Some patchy rain, most often dry
A band of rain passes northeast through morning; precise timing uncertain and many hills may stay substantially dry. Afternoon is mostly dry, just a few light patchy falls possible.
Cloud on the hills?
Caps may cling to high summits
Patchy banks of cloud early at various heights, mostly south/western slopes and many clear areas too. Bases lift to largely 900m and up, some breaks but caps may cling to high summits, and may fill in again for periods afternoon.
Chance of cloud free summits?
Rising to 60%
Sunshine and air clarity?
Often cloudy, a few glimpses of weak sun from time to time. Variable visibility, sometimes good but reduced in rain.
How Cold? (at 900m)
10 to 12C; some uncertainty, could be a degree cooler.
Freezing Level
Well above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 16th June 2026
Last updated
Sat 13th Jun 26 at
3:52PM
How windy? (On the summits)
Southwesterly 10-20mph dawn, strengthening to 30-40mph afternoon, several hours near higher end of range.
Effect of the wind on you?
Fairly small at dawn, deteriorating to strenuous conditions, stability challenged over tops with considerable wind chill.
How Wet?
Patchy rain, later setting in
Patchy rain drifts from the southwest through morning, plenty of dry windows, but rain increasingly frequent afternoon, first towards mid-Wales, then more widely persistent across the west into evening.
Cloud on the hills?
Fairly extensive, some early breaks
High terrain shrouded from dawn, likely 500-600m upward; some morning periods of higher bases, any breaks to summits brief. Then more extensively shrouded afternoon from 400m up, higher bases north of the A5.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Mostly overcast, rare glimpses of weak sun early. Very good visibility below cloud, deteriorating later in rain.
How Cold? (at 900m)
10 or 11C. Feeling near freezing in strongest wind.
Freezing Level
Above the summits.
Planning Outlook
Through Monday, cloud will return from the southwest and bring some patchy rain with it. From Tuesday onward, a variable southwesterly will dominate through at least mid-week. Windy at times with periods of rain, drizzle and low cloud most persistent in the west; Tuesday into Wednesday is likely a wetter and unsettled period, with the unsettled weather lingering well into Wednesday in Scotland. Warmest in England and Wales, but may stay cooler in Scotland as low pressure to the northwest recycles air from the north Atlantic back onto the Munros. Pressure generally trending higher later in the week, centred southeast of England, but low pressure to the west of Ireland will prevent any extended settled periods with more windy, wet weather at times next weekend; temperatures likely become more widely warm.