Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
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.
Click an icon for more information or click here for a key to all icons.
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
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
Tuesday 5th May 2026
Last updated
Mon 4th May 26 at
3:54PM
Summary for all mountain areas
Cold Scottish Highlands, high terrain stays frozen. Snow flurries north and east, more persistent later east. Well scattered showers south Scotland, afternoon showers over the Pennines, later east Lakeland; varied cloud on high northern slopes. A few odd showers north Wales with patchy cloud, dry south.
Headline for Eryri / Snowdonia National Park
Patchy cloud and odd showers from north, clear hills south
How windy? (On the summits)
Northerly 10-15mph, sometimes less. Some risk of higher speeds in east Wales in the early hours.
Effect of the wind on you?
Mostly small.
How Wet?
Substantially dry, a few odd showers from the north
A chance of sparse light showers drifting from the north, but the hills mostly dry.
Cloud on the hills?
Mostly just northern hills
Low cloud in north Snowdonia/Carneddau in the early morning, as low as 300m; only patches on higher terrain further south. Much of the cloud lifts and dissipates for clear hills, but patches continue to drift onto high northern slopes through the day.
Chance of cloud free summits?
80%, 60% northern slopes
Sunshine and air clarity?
Sunshine breaking out through morning for at least several hours, then a patchwork afternoon with fair weather cloud. Very good visibility.
How Cold? (at 900m)
3 or 4C, may locally rise to 5C towards mid-Wales.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 6th May 2026
Last updated
Mon 4th May 26 at
3:54PM
How windy? (On the summits)
Southeasterly, 5 to 15mph, some gustier spots to 20-25mph at times.
Effect of the wind on you?
Fairly small, but feeling noticeably chillier if exposed to wind on higher tops.
How Wet?
Local showers
Risk of a little patchy light rain from time to time during the day. Scattered showers more likely in afternoon, moving northwest, but some places stay largely dry.
Cloud on the hills?
Covering some slopes at times, lifting
Some varied cloud around mid to upper slopes in the morning, larger banks if any rain occurs. Much cloud lifting to the tops and breaking above into afternoon, but some ragged patches return in showers.
Chance of cloud free summits?
70%
Sunshine and air clarity?
A little sun, perhaps often a rather cloudy sky; sun mainly near coasts afternoon. Visibility excellent.
How Cold? (at 900m)
3C, rising to 5C afternoon.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Thursday 7th May 2026
Last updated
Mon 4th May 26 at
3:54PM
How windy? (On the summits)
Southerly 10-20mph.
Effect of the wind on you?
Fairly small.
How Wet?
Showery rain
Rain may affect many hills, the greatest chance in the afternoon when rain may become heavier and more persistent for a few hours.
Cloud on the hills?
Fleeting banks high west slopes and summits
Some varied fog banks in the morning, possibly to lower slopes, these lifting after dawn towards high terrain and becoming well-broken. Greatest risk of cloud caps lingering on highest tops and upper western slopes.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Glimpses of sun. Excellent visibility but deteriorating during rain.
How Cold? (at 900m)
3 to 5C, or locally 6C Carneddau in the afternoon.
Freezing Level
Above the summits.
Planning Outlook
Chilly through mid-week, particularly across the Scottish Highlands where morning freezing level sometimes below 800m; patchy frosts developing in the glens and corries, though always thawing soon after sunrise. Wednesday is likely the chilliest day. Mixed weather with showers drifting around the country, though total rainfall will be fairly small. Wind often light as well, though variable afternoon breezes will form, particularly around showers where gusts may be suddenly strong. Local low fog in the mornings, typically lifting towards high terrain, often above summits though regions for best breaks are uncertain; often cloud with just glimpses of sun for most. Next weekend sees more unsettled weather, a stronger easterly wind establishing over England and Wales with more frequent, heavy showers here.