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.
Click an icon for more information or click here for a key to all icons.
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 24th July 2026
Last updated
Thu 23rd Jul 26 at
4:15PM
Summary for all mountain areas
Strong westerly winds, reaching gale-force on Scottish tops, increasing later. Low cloud and some drizzle in western Scotland, drier and some cloud breaks further east. More persistent rain develops from the northwest later. Largely dry England & Wales, some cloud capping high western tops.
Headline for Eryri / Snowdonia National Park
Largely dry, some cloud capping tops. Moderate breeze.
How windy? (On the summits)
West or northwesterly 20 to 25mph, lowest speeds toward mid-Wales, speeds tending to rise slightly later in day, reaching 30mph higher northern tops. Rising slightly further up to dawn on Saturday to 35mph.
Effect of the wind on you?
Breezy over the hills, starting to affect ease of walking in some exposed spots. Noticeable wind chill.
How Wet?
Rain unlikely
Chance of a brief patch of drizzle mainly hills toward north coast in the morning.
Cloud on the hills?
Sometimes capping high tops
Patches of cloud drifting over hills toward west and northern coasts in morning, mostly above 800m, breaking above tops for periods, increasingly broken afternoon. More often clear toward eastern tops.
Chance of cloud free summits?
60% rising to 80%
Sunshine and air clarity?
Cloud and intermittent sun, best in eastern mid-Wales; sunnier widely afternoon. Visibility very good.
How Cold? (at 900m)
10C rising to 12C, up to 15C mid-Wales. Feeling like 3 to 7C directly in the wind. Reaching 25C eastern valleys mid-Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 25th July 2026
Last updated
Thu 23rd Jul 26 at
4:15PM
How windy? (On the summits)
Westerly 25 to 35mph, at times 40mph with some stronger gusts over higher northern mountains morning to midday.
Effect of the wind on you?
Strenuous walking and marked chill over the hills, buffeting gusts making balance challenging on exposed ridges.
How Wet?
Rain and drizzle
Rain developing from the north during morning, a mix of drizzle and periods of persistent rain over western hills into afternoon, staying generally damp into evening; patchier small amounts of drizzly rain further east.
Cloud on the hills?
Lowering to become extensive
Patchy cloud banks at first northwest areas, hills toward mid-Wales start clear, but cloud likely to lower widely as rain develops, blanketing hills to lower elevations in west, 500-700m inland/east.
Chance of cloud free summits?
50% dropping to 10%
Sunshine and air clarity?
Initially high cloud and fairly bright, good visibility if dry, but deteriorating to cloudy dull conditions, misty poor visibility west.
How Cold? (at 900m)
11C, up to 13C eastern tops afternoon. Feeling near to freezing directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 26th July 2026
Last updated
Thu 23rd Jul 26 at
4:15PM
How windy? (On the summits)
West-northwesterly 20-30mph, with time trending more northwesterly and towards higher speeds.
Effect of the wind on you?
Ease of walking impacted, more strenuous on high terrain later and feeling chilly.
How Wet?
Showery rain
Often raining over high terrain of Eryri/Snowdonia NP and north and western areas. Further east, the rain more showery, but at times more frequent too.
Cloud on the hills?
High terrain stays shrouded
Terrain above 800m likely in cloud most or all day, more widely extensive to mid-slopes early. A few higher breaks, but also widely lowering during more showery periods. Slopes towards the west and north coasts more often shrouded.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Best bursts of sun towards east Wales. Varied visibility, very good where out of cloud and rain.
How Cold? (at 900m)
10 or 11C. Feeling like 1 to 3C in strongest wind.
Freezing Level
Above the summits.
Planning Outlook
Westerly winds prevail this weekend and early next week, then southwesterly into midweek, bringing spells of rain, drizzle and some showery falls; low cloud persistent across hills, particularly in the west. Upland gales early on Saturday tend to lessen, but staying breezy; lower wind speeds for Scotland on Sunday. Rather cool this weekend and Monday, single-figures Celsius on high terrain. Then more humid, and warmer, especially England & Wales. More prolonged heavier rain possible for western Scotland Monday-Tuesday, risk of gales again on high tops. More uncertainty later in the week as a slow-moving area of low pressure is nearby, but risk areas of heavy rain and showers.