Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Wednesday'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.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
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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.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 10th June 2026
Last updated
Tue 9th Jun 26 at
4:00PM
Summary for all mountain areas
Showery westerlies, scattered bursts of rain moving eastward across the country, locally heavy with a chance of thunder, mainly eastern areas by afternoon. Improving to drier and brighter conditions for western England and Wales with time. Breezes tending to freshen. Feeling rather cool.
Headline for Eryri / Snowdonia National Park
Showers easing. Moderate-to-strong breeze.
How windy? (On the summits)
Westerly 20 to 25mph, at times 30mph higher tops.
Effect of the wind on you?
Marked wind chill where exposed to the strongest breeze. Starting to affect ease of walking on some high tops and ridges.
How Wet?
Showers move east, fade with time
Showers initially western hills will develop more widely during morning, odd heavy bursts, chance of thunder inland. Heavier showers move away eastward in afternoon, leaving odd lighter showers later in day.
Cloud on the hills?
Often covering tops, rising
Varying, but tops often covered through the day, especially towards west coast in the morning. Breaks to tops best in afternoon away from showers.
Chance of cloud free summits?
30% rising to 60% afternoon
Sunshine and air clarity?
Variable cloud and patchy sun, best sun early in day well inland, then sunnier later in day near coasts. Visibility mostly good, but poor in showers.
How Cold? (at 900m)
3C lifting to 5C. Feeling like -5C directly in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 11th June 2026
Last updated
Tue 9th Jun 26 at
4:00PM
How windy? (On the summits)
Southwest turning westerly 35 to 45mph, at times 50mph higher mountains.
Effect of the wind on you?
Challenging walking conditions in exposure on high terrain, frequent buffeting. Considerable wind chill.
How Wet?
Persistent rain, often heavy
Rain arriving from before dawn, some steadier heavier falls for periods through the morning. May break up a little in afternoon, but still often raining, risk still some persistent heavier falls in west.
Cloud on the hills?
Extensive low cloud
Blanket low cloud across the hills, to lower slopes west coast areas, highest bases northeast of Ogwen valley, but rarely above 600m.
Chance of cloud free summits?
Below 10%
Sunshine and air clarity?
Overcast and dull, murky toward west. Poor visibility much of day in rain.
How Cold? (at 900m)
6C rising to 10C. Feeling like -3 to -6C directly in wind.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Friday 12th June 2026
Last updated
Tue 9th Jun 26 at
4:00PM
How windy? (On the summits)
Westerly 25 to 35mph, strongest Snowdon / Yr Wyddfa range, at times 40mph.
Effect of the wind on you?
Strenuous walking where exposed, buffeting gusts affecting balance on ridges. Feeling cool despite fairly mild air.
How Wet?
Drizzly rain west
Feeling 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.
Cloud on the hills?
Extensive, lowest west
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.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Largely cloudy, glimpses of sun mostly east Wales. Poor visibility, misty in west, locally better visibility below cloud in east.
How Cold? (at 900m)
9 or 10C, little change all day. Feeling like 0 to -3C where exposed to wind.
Freezing Level
Above the summits.
Planning Outlook
Damp westerly breezes on Friday will cloak most mountains in cloud and some drizzle, better conditions eastwards. Cool and strong westerlies persist in Scotland on Saturday, then warmer with lighter winds by Sunday. Some patchy rain remaining in west and northwest Scotland over the weekend. Pressure tends to rise from the south this weekend, bringing warmer air and drier conditions to England & Wales, although west coast mountains may hold onto cloud. 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. Higher pressure then shows more signs of expanding over the country by late next week bringing improving conditions.