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.
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.
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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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.
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
Saturday 15th August 2026
Last updated
Fri 14th Aug 26 at
4:30PM
Summary for all mountain areas
A fresh-to-strong westerly breeze across Scotland brings showery rain frequently to the northwest, cloud covering many western hills; fewer showers and higher cloud bases eastward. Moderate northwesterly breezes for England & Wales, cooler than recent days, early showers mostly fade with cloud lifting.
Headline for Eryri / Snowdonia National Park
Breezy start lessens. Patchy early rain, cloud slowly lifts/breaks.
How windy? (On the summits)
Northerly 20-25mph at dawn, strong gusts over high terrain and downslope southward; easing to 15-20mph into middle of day. Occasional 20-25mph westernmost tops later in day.
Effect of the wind on you?
Blustery in exposure with considerable buffeting early, feeling rather cool, tending to ease towards fairly small effects.
How Wet?
A little light rain, fading
From dawn to early morning, some spotty light rain drifts onto the hills from the north, drizzly on high terrain in cloud as well, fading out to leave dry conditions by middle of day onward.
Cloud on the hills?
Lifting to high summits, breaks afternoon
Fairly extensive early, particularly northwestern areas; some breaks at varied elevations south and east. Lifting through morning, to just banks over high terrain above 800-900m. Caps may come and go on highest tops nearer coasts into afternoon, but tending to lift and break; often clear sooner inland.
Chance of cloud free summits?
30% rising to 70%
Sunshine and air clarity?
Cloudy start, some sun breaking through to leave a mix of fair-weather cloud and sun into afternoon; becoming sunnier coasts. Very good visibility.
How Cold? (at 900m)
9 or 10C. Feeling like 2 to 5C in the wind, coldest early in day.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 16th August 2026
Last updated
Fri 14th Aug 26 at
4:30PM
How windy? (On the summits)
Northwest turning west then southwesterly, 10 to 15mph or at times less, rising a little through afternoon.
Effect of the wind on you?
Mostly small.
How Wet?
Little or no rain
A few odd patches of rain may drift onto the hills, generally light in nature and many hills often dry.
Cloud on the hills?
Lifting to summits, and likely above
Banks of cloud at varied heights in the morning, lifting towards high terrain, and likely off the summits for extended periods. Broader layers may cover high terrain in northwest should rain occur.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Varied cloud and sun weakened by high cloud; often cloudier northwest. Very good visibility.
How Cold? (at 900m)
9 or 10C, only slight rise, mainly east.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 17th August 2026
Last updated
Fri 14th Aug 26 at
4:30PM
How windy? (On the summits)
Southwesterly 15 to 20mph in morning, tending to rise to 25mph afternoon, later in day 30-35mph, into night 40mph.
Effect of the wind on you?
Fairly small, but starting to affect ease of walking later in daytime on high terrain, more challenging from dusk.
How Wet?
Patchy drizzly rain west
A little light rain in the morning on western hills, may leave drizzly patches afternoon, but amounts small. Some steadier rain develops onward into night from the north.
Cloud on the hills?
Most persistent western hills
Covering much high terrain in the morning, some banks of cloud from 500m up near coast in morning, higher bases inland. Varying into afternoon, some breaks, but often covering high terrain in west.
Chance of cloud free summits?
30% west, 50% east.
Sunshine and air clarity?
Sun fairly weak through high cloud, overcast for periods, cloudiest west. Visibility very good, but hazier near coast around light rain.
How Cold? (at 900m)
10 to 12C. As wind increases, later feeling like 5C, risk cooler by evening on tops.
Freezing Level
Above the summits.
Planning Outlook
Westerly weather patterns prevail into the new week bringing generally unsettled and cooler conditions - single-figure temperatures typical on the Munros and high tops elsewhere. On Monday, extensive rain spreads across Scotland, heaviest in the west. Winds strengthen, risk reaching gale force on many hills later on Monday, staying blustery widely into midweek. Rain extends south over England and Wales by Monday night into early Tuesday. The rest of the week likely sees showery rain common for all areas as low pressure dominates toward the north, the rain most persistent in western Scotland, but odd heavier bursts passing eastward, with a chance of thunder, especially later in week.