Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Today's Forecast
Moderate breeze, fairly small impact, but chilly
A noticeable breeze, feeling distinctly chilly. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Mostly dry, partly cloudy
Dry most or all day. Variable amounts of sun and cloud, occasional patches drifting onto some higher slopes, but most summits often clear.
Cold
Near or below freezing on highest terrain all day. Considerable or significant chill factor if exposed to strong winds. Prepare for winter conditions - suitable protective clothing required.
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Moderate breeze, fairly small impact, but chilly
A noticeable breeze, feeling distinctly chilly. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Mostly dry, partly cloudy
Dry most or all day. Variable amounts of sun and cloud, occasional patches drifting onto some higher slopes, but most summits often clear.
Cold
Near or below freezing on highest terrain all day. Considerable or significant chill factor if exposed to strong winds. Prepare for winter conditions - suitable protective clothing required.
Viewing Forecast For
Eryri / Snowdonia National Park
Sunday 28th April 2024
Last updated
Sun 28th Apr 24 at
7:07AM
Summary for all mountain areas
Extensive precipitation (of snow high areas) will move northwards across eastern Britain (exact western edge uncertain), but will also pivot so as to clear eastwards across England whilst advancing westward across northern Scotland. Extensively dry with very clear air further west.
Headline for Eryri / Snowdonia National Park
A few showers.
How windy? (On the summits)
Northwest backing westerly; 15 to 20mph but perhaps for a few hours 25mph on higher tops.
Effect of the wind on you?
Fairly small.
How Wet?
Scattered showers
Scattered showers, of hail higher tops - mainly afternoon.
Cloud on the hills?
Most summits clearing; may come and go above 900m
Risk from dawn persistent fog higher areas in precipitation east Wales. This will more or less all clear through morning. Otherwise, cloud base soon 900m or above.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patches of sunshine spreading inland. Excellent visibility generally, but poor n precipitation.
How Cold? (at 900m)
0C after dawn but extensively 5C by mid afternoon although nearer 2C on summits closest to the coast.
Freezing Level
Near freezing point higher summits until mid morning, then above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Monday 29th April 2024
Last updated
Sun 28th Apr 24 at
7:07AM
How windy? (On the summits)
Southerly between 20 and 30mph; although may reach 35mph for periods in west Wales.
Effect of the wind on you?
Will impede ease of walking widely, locally giving considerable buffeting and wind chill.
How Wet?
Rain mainly west Wales late in day
Bursts of showery rain from time to time, mainly west Wales. In afternoon or evening, the rain probably setting in for a few hours (particularly west Wales).
Cloud on the hills?
Mostly confined to or above the tops
Summits may well be free of cloud extensively, but in rain higher slopes will become covered.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Weak sunshine occasionally, generally through layers of high level cloud. Very good or excellent visibility but deteriorating to become poor in rain.
How Cold? (at 900m)
2C rising to 4C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 30th April 2024
Last updated
Sun 28th Apr 24 at
7:07AM
How windy? (On the summits)
Southerly speeds may well vary: typically 25-30mph, but for periods 35-40mph (strongest winds toward the west).
Effect of the wind on you?
Likely to impede ease of walking on higher areas, and toward the west give considerable buffeting and wind chill on some slopes.
How Wet?
Rain intermittently
Busts of showery rain from time to time, perhaps setting in for a couple of hours. Threat one or two heavy bursts.
Cloud on the hills?
Patches on higher slopes
Fragments on higher slopes will come and go, mainly above 700m.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Glimpses of sun through layers of high level cloud. Good visibility although hazy.
How Cold? (at 900m)
3 rising to 6C
Freezing Level
Above the summits,
Planning Outlook
Much less cold next week with freezing levels above the mountains. Rain from time to time, particularly Wales - some of the rain heavy and thundery in character. Wind direction predominantly easterly, resulting in frequent low cloud on more eastern mountains, with highest cloud base often near the west coast.