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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
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
Saturday 18th July 2026
Last updated
Fri 17th Jul 26 at
3:23PM
Summary for all mountain areas
Fog and patchy light rain north Scottish highlands early, breaking for a dry bright afternoon; smokey views east Scotland. Warm and dry with widespread high fire risk. Sun and fair weather cloud England and Wales, afternoon scattered showery bursts from Yorks Dales NP southward to Wales.
Headline for Eryri / Snowdonia National Park
Risk afternoon showers, trending southward
How windy? (On the summits)
Northerly, some variability, 10-20mph, gusty early. A northeasterly trend later, trending towards the higher end of the range.
Effect of the wind on you?
Fairly small, some nuisance gusts, and walking increasingly inconvenienced into evening.
How Wet?
Rising chance of showers mid-Wales afternoon
Largely dry well into the day, a rising chance of showers through afternoon, risk of local heavy bursts. The showers will trend southward, Eryri/Snowdonia NP perhaps entirely dry.
Cloud on the hills?
Passing banks on tops
Varied patchy mist on middle and low slopes early, many hills start clear. Mist lifting and mostly dissipating soon after dawn. Cloud banks forming at and above 800m from time to time over Eryri/Snowdonia NP, but cloud regularly above the tops as well, and clearest late in the day.
Chance of cloud free summits?
80%
Sunshine and air clarity?
A patchwork of cloud and sunshine, perhaps more widely sunny to the north later in the day. A light haze tends to fade, visibility becomes good.
How Cold? (at 900m)
12 to 14C, coolest Carneddau to Llanberis where little or no rise in temperature; valleys rising to 18C, warmer east Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 19th July 2026
Last updated
Fri 17th Jul 26 at
3:23PM
How windy? (On the summits)
North-northeasterly 5-15mph.
Effect of the wind on you?
Mostly small.
How Wet?
Likely dry
Small chance of a few sprinkles on slopes near coasts in the afternoon, more likely entirely dry.
Cloud on the hills?
Hills clear
Chance some light mist in sheltered areas in the morning, this fading but also some cloud banks lifting to the high tops; plenty of clear spells expected.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Often sunny, some thin high cloud and fair weather cloud developing; sunniest to the north. Excellent visibility.
How Cold? (at 900m)
10C rising to 13C Eryri/Snowdonia NP, least rise north slopes; may be a degree warmer to the south and east.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 20th July 2026
Last updated
Fri 17th Jul 26 at
3:23PM
How windy? (On the summits)
Northerly 5-15mph; both speed and direction somewhat variable.
Effect of the wind on you?
Mostly small.
How Wet?
No rain expected
Cloud on the hills?
Early mist, some banks on high tops
Some early patchy mist in valleys, this soon fading but variable cloud banks form on higher terrain as the northerly wind becomes steadier. With time, banks isolate to high summits with breaks.
Chance of cloud free summits?
Rising to 70%
Sunshine and air clarity?
Often sunny, some fair weather cloud building, cloudiest on upper northern terrain. Very good visibility.
How Cold? (at 900m)
11C rising to 14C, or milder well-inland.
Freezing Level
Above the summits.
Planning Outlook
Ground conditions remain very dry with wildfire risk; some areas in north Wales, the Peak District, and Cairngorms NP are currently inaccessible due to fire hazards. Weather remains settled late weekend into next week as high pressure persists west of Ireland. A northerly flow will cool temperatures slightly, dawn temperatures in the middle single digits in Scotland; staying warm in England and Wales but hill temperatures unlikely reaching the 20s. Cloud and drizzle starts to affect northwest Scotland more often, occasionally drifting further south, chance of an area of rain slipping south through the country Tuesday to Wednesday, though totals likely small. An unsettling trend is indicated for the following weekend, bringing wind, some rain, and cooler temperatures.