Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday'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.
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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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.
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
Friday 3rd July 2026
Last updated
Thu 2nd Jul 26 at
3:56PM
Summary for all mountain areas
Early hill cloud in Wales and central/east parts England and Scotland lifts and breaks for sun through high cloud. Warm for most, mild Scottish Highlands but feeling chilly in wind. Hill cloud and patchy rain west highlands, setting in into night. Some patchy cloud lingers near tops of Eryri/Snowdonia and Lakeland.
Headline for Eryri / Snowdonia National Park
Often sunny, patchy cloud; strengthening wind later
How windy? (On the summits)
Westerly 15-20mph, some variability both above and below this range. Later shifting southwesterly and strengthening, speeds to 30mph over tops with stronger gusts into evening.
Effect of the wind on you?
Fairly small most of the day, becoming blustery through late afternoon with some notable gustiness affecting ease of walking.
How Wet?
No rain expected
Cloud on the hills?
Variable banks west slopes, mostly early
Patchy cloud banks mostly over western hills, may thicken for a few early hours over most high terrain, but becoming well-broken afternoon with occasional passing banks, again primarily on western hills and not just on the high tops. East-Wales hills stay clear.
Chance of cloud free summits?
40% rising to 80%
Sunshine and air clarity?
A mix of sun and high cloud, the cloud thickening in north Eryri/Snowdonia NP. Very good to excellent visibility.
How Cold? (at 900m)
9 or 10C, slightly rising in sunshine to finish near 11 or 12C and staying elevated into night.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 4th July 2026
Last updated
Thu 2nd Jul 26 at
3:56PM
How windy? (On the summits)
Westerly 25 to 35mph, stronger gusts may develop at times around higher mountains, and downslope to the east early.
Effect of the wind on you?
Affecting comfortable walking and balance on higher tops and ridges, more frequent buffeting for periods highest areas.
How Wet?
Fine drizzle high tops
Some drizzle in the air for periods, mostly western coastal hills, and amounting to very little. Little if any east Wales.
Cloud on the hills?
Fairly extensive, lowest west
Blanket cloud across hills toward west much of the day, bases 400-600m or sometimes lower near coast. Mostly above 600m further east, some higher breaks at times, some chance of a clear summit towards Berwyn group.
Chance of cloud free summits?
20% west, to 40% east.
Sunshine and air clarity?
Largely cloudy and misty west Wales, better visibility below cloud further inland and north, some sunny breaks.
How Cold? (at 900m)
11C rising to 13C afternoon. Feeling like 2 to 4C directly in the wind on tops.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 5th July 2026
Last updated
Thu 2nd Jul 26 at
3:56PM
How windy? (On the summits)
Westerly 20-30mph, some variability, also quite gusty over the tops and elevated passes.
Effect of the wind on you?
Locally fairly small, but ease of walking becoming impacted on high exposed terrain, occasional buffeting gusts.
How Wet?
Little or no rain
Some fine drizzle in the air over high terrain where in cloud, small chance of an odd light patch of rain coming from the west, but more often or entirely dry.
Cloud on the hills?
Lifting to upper slopes
Fairly extensive high terrain with banks to at least middle slopes, patches to lower western slopes; high summits may be near the top of the cloud layer. Lifting trend with time to largely 800m and above, some breaks forming too, but caps often cover the summits.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Increasingly sunny on lower slopes but weakened by high cloud, best east. Very good visibility.
How Cold? (at 900m)
10 or 11C, may rise slightly.
Freezing Level
Above the summits.
Planning Outlook
Westerlies prevail across northern Britain. Rain, drizzle and low cloud over western hills from Lake District northward through the weekend. Temperatures near average, but feeling cool in exposure to wind on tops, which could regularly be quite strong and gusty. Generally drier northeast areas with higher cloud bases but patchy rain and drizzle reach here too. Higher pressure south maintains drier conditions in Wales and the south Pennines but cloud and some drizzle will affect high western slopes from time to time. A drier and warmer window looks probable from middle next week as high pressure builds. Very warm temperatures for England and Wales, spells of sunshine more widely. Some showers and patchy rain are likely to continue through late week and next weekend, though detail is uncertain.