Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Friday'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
Friday 12th June 2026
Last updated
Thu 11th Jun 26 at
4:07PM
Summary for all mountain areas
Strong wind for all. Showers and fog in west Scotland all day, passing east afternoon, persistent for a few later hours. Gales into Scotland from the west late afternoon into evening. Morning rain, drizzle, and fog in England, easing afternoon, driest S Pennines. Drizzle in Wales fades afternoon, sun glimpses break out.
Headline for Eryri / Snowdonia National Park
Drizzle, slowly fading afternoon; windy, gale-force gusts
How windy? (On the summits)
Westerly 30-40mph, notable gusts over high terrain much of the day, regularly to 45mph, or stronger early in the day.
Effect of the wind on you?
Strenuous walking where exposed, buffeting gusts affecting balance on ridges, notably early when strongest gusts may knock you off balance. Feeling cool despite fairly mild air.
How Wet?
Drizzly rain, fading through afternoon
Damp over many western hills with drizzle often in the air, but may amount to little in total rainfall - some steadier light rain possible at times. Eastern hills drier, and the drizzle fading more widely as afternoon goes.
Cloud on the hills?
Extensive, lowest west, breaks forming afternoon
Persistent across the hills, foggy from lower elevations upward toward the west coast, cloud base rarely above 500m most western areas. Higher bases northeast of Ogwen and near Bala, but often shrouded above 600m; rising chance of breaks late in the day.
Chance of cloud free summits?
10% rising to 30%
Sunshine and air clarity?
Largely cloudy, glimpses of sun mostly east Wales, and breaking into patchy sun through high banks of cloud through afternoon. Poor visibility, misty and hazy in west, locally better visibility below cloud in east.
How Cold? (at 900m)
9 or 10C, little change during the day, but notably cooling overnight. Feeling like 0 to -3C where exposed to wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Saturday 13th June 2026
Last updated
Thu 11th Jun 26 at
4:07PM
How windy? (On the summits)
Northwesterly 25-30mph at dawn, easing to 20-25mph most of the day; risk stronger northernmost hills, gusty over tops too.
Effect of the wind on you?
Walking may be strenuous with buffeting gusts and wind chill early, easing to fairly small effects.
How Wet?
Minimal patchy rain and drizzle
Damp with fine drizzle over the high tops with a few patches of rain drifting from the northwest from time to time. East Wales hills likely substantially dry, and any chance of rain reducing later.
Cloud on the hills?
Lifting to high terrain
Fairly extensive above 600-700m in the morning. A general lifting and breaking trend with time, though banks cling to terrain above 800-900m, and some variable lower banks on western slopes too.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Glimpses of sunshine, most often cloudy to the west. Good visibility, perhaps a light haze.
How Cold? (at 900m)
6C rising to 10C. Feeling below freezing in early direct wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 14th June 2026
Last updated
Thu 11th Jun 26 at
4:07PM
How windy? (On the summits)
Northwesterly 15mph at dawn, gusting 20-25mph over high tops and passes, easing and becoming variable, 10mph or less.
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?
Patchy banks on high slopes, most north
Variable banks of cloud above the mid-slopes at dawn, some thin mist in sheltered valleys as well; many slopes start clear. Cloud will lift to largely above 800m, mostly dissipating, but clinging to northern slopes for longer; summits may be between cloud layers.
Chance of cloud free summits?
Rising to 70%
Sunshine and air clarity?
Sun increasingly breaks out but probably weakened by high cloud. Very good visibility.
How Cold? (at 900m)
7C rising to 13C.
Freezing Level
Above the summits.
Planning Outlook
Higher pressure to the southwest this weekend, bringing warmer and drier conditions to Wales. Showery rain affecting Scotland on Saturday, some patches reaching northwest England; staying very windy and cool in Scotland and northern England on Saturday too. Sunday will be a clearing day for most: early rain in Scottish Highlands easing and most cloud lifting off summits, sunshine but weakened by high cloud. Temperature more widely mild, warm in Wales. Into next week, a mixed southwesterly pattern remains, windy at times with periods of rain, drizzle and low cloud most persistent in the west. Warmest in England and Wales, but cooler westerly air likely returns at times mid-late week. Pressure generally trending higher, but extensively settled weather may remain elusive in the near-term.