Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 27th July 2026
Last updated
Sun 26th Jul 26 at
4:18PM
Summary for all mountain areas
Fresh to strong west to southwesterly winds, rather cool on Scottish tops. Rain and drizzle frequent in western Scotland, patchier eastwards. Some drizzly rain for Lakes and north Wales. Low cloud affecting most western hills, higher bases eastwards.
Headline for Eryri / Snowdonia National Park
Blustery, some drizzle, low cloud western tops.
How windy? (On the summits)
Westerly 25mph, slightly less toward mid-Wales, gusts 30-35mph higher northern mountains, sustained speeds tending to rise in afternoon.
Effect of the wind on you?
Ease of walking affected on tops, more strenuous with time with stability affected, balance at times challenging on ridges. Feeling rather cool on high terrain.
How Wet?
Drizzle mostly west
Some fine drizzle over the high tops at times when in cloud, some drier moments in morning, but steadier drizzle developing for periods afternoon onward. Very little toward eastern hills.
Cloud on the hills?
Varied then lowering over hills more widely
Banks of cloud at varied elevations in the morning, some clear windows between layers possible, lifting for a time with breaks. Cloud increasingly filling in over the hills into the afternoon, to mid-elevations near west coast, widely above 700-800m inland.
Chance of cloud free summits?
50% dropping to 20%
Sunshine and air clarity?
Mostly sunny early with good visibility, trending towards cloudier conditions afternoon, visibility reducing in drizzle.
How Cold? (at 900m)
8 or 9C rising to 12C, staying elevated into the night and may rise slightly. Feeling near to freezing directly in the wind on high tops.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 28th July 2026
Last updated
Sun 26th Jul 26 at
4:18PM
How windy? (On the summits)
Southwesterly 25 to 40mph, gusts 50mph around higher northern tops.
Effect of the wind on you?
Strenuous walking conditions, frequent buffeting gusts knocking you off balance on exposed terrain. Marked wind chill.
How Wet?
Drizzle and some rain west
Drizzly rain frequent over western areas, some more steadier rain occasionally. Very little reaching eastern Wales.
Cloud on the hills?
Extensive, may persist west
Blanket cloud likely covering the hills, to lower elevations in west in the morning, 500-600m further northeast. Bases tend to rise, but may linger over west coast tops.
Chance of cloud free summits?
10% rising to 30% west, 60% east.
Sunshine and air clarity?
Largely cloudy, misty in west, poor visibility widely in rain; some improvements and brief moments of sun east Wales.
How Cold? (at 900m)
12C northwest, little variation all day, to locally 15C eastern hills, quite humid. Feeling like 2 to 5C directly in wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 29th July 2026
Last updated
Sun 26th Jul 26 at
4:18PM
How windy? (On the summits)
South to southwesterly 20 to 30mph, gusty in places over higher terrain.
Effect of the wind on you?
Blustery over the hills, affecting comfortable walking at times on higher exposed tops and ridges.
How Wet?
Local drizzle, chance a shower
Some drizzle around low cloud on hills near Cardigan Bay. Chance of an isolated thundery burst of rain inland later in day.
Cloud on the hills?
Mostly west coast hills
Cloud banks to lower elevations on coastal hills in west, tending to thin but may linger around some slopes all day. Further north and east, odd patches, may largely clear.
Chance of cloud free summits?
30% west, to 70% north/east.
Sunshine and air clarity?
Locally cloudy and misty in west, may improve. Otherwise sun and varied high cloud, visibility very good.
How Cold? (at 900m)
12C rising to 15C, possible 18C mid-Wales. Some valleys reach 25C or above mainly inland and east; quite humid.
Freezing Level
Above the summits.
Planning Outlook
Southwesterly winds will bring rain to most places early this week, some more prolonged heavier falls for western Scotland into Tuesday, accompanied by gales over high terrain, severe on Scottish tops, but rather humid for all, warm for England and Wales. Cooler air toward northwest Scotland moves across all of Scotland by Wednesday. Showery rain through mid-late week, some heavy and possibly thundery bursts, mainly Scotland. Likely drier for Wales and southern Pennines. Remaining very uncertain detail toward next weekend and early the following week, but indications favour a broad zone of low pressure bringing areas of rain and heavy showers through early August.