Eryri / Snowdonia National Park
Includes all summits in the the northern half of Wales from Pumlumon northwards.
Monday'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.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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.
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.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Monday 2nd March 2026
Last updated
Sun 1st Mar 26 at
4:30PM
Summary for all mountain areas
A slow-moving front brings rain, drizzle and low cloud to England and Wales, also eastern Scotland at first. To the east of this, strong to gale-force winds at first east. Lighter winds for much of the Highlands all day, cloud lifting with sunny spells. Later in day, rain and hill snow moves in from west.
Headline for Eryri / Snowdonia National Park
Windy start, easing. Rain fizzling out, cloud lifting.
How windy? (On the summits)
South to southwesterly; 40-50mph at dawn, dropping during morning to around 20mph by middle of day onward.
Effect of the wind on you?
Difficult conditions around dawn lessen in the morning, remaining blustery in places for a few hours, but smaller effects with time.
How Wet?
Rain and drizzle slowly fading
A band of rain early in the day, persistent for a few hours, tending to ease off and break up from northwest, may leave lingering patchy light rain and drizzle toward mid-Wales.
Cloud on the hills?
Fairly extensive, improving with time
Covering many hills perhaps much of day, varied banks to some lower slopes for a few hours, higher bases north. Tending to gradually rise with some breaks onward through afternoon, mainly north.
Chance of cloud free summits?
10% rising to 30%
Sunshine and air clarity?
Cloudy likely all day, but some brighter skies and glimpses of sun emerge later from west. Visibility poor in rain, improving where dry later.
How Cold? (at 900m)
3C, dropping into night to 1C. If exposed to stronger wind, feeling like -8C early in day.
Freezing Level
Above the summits all day, then dropping close to freezing on highest tops after dark.
Viewing Forecast For
Eryri / Snowdonia National Park
Tuesday 3rd March 2026
Last updated
Sun 1st Mar 26 at
4:30PM
How windy? (On the summits)
Variable direction, 15-20mph in places at times, but likely often less.
Effect of the wind on you?
Mostly small.
How Wet?
Precipitation unlikely
Cloud on the hills?
Patchy cloud lifting, clearing
Some varied cloud banks in the morning, plus patchy mist around sheltered valleys, lifting to higher slopes and clearing. Likely clearest toward the northwest.
Chance of cloud free summits?
70%
Sunshine and air clarity?
High cloud toward the south, sunnier toward northwest. Visibility very good, some haze or mist early in day.
How Cold? (at 900m)
2 or 3C.
Freezing Level
Above the summits.
Viewing Forecast For
Eryri / Snowdonia National Park
Wednesday 4th March 2026
Last updated
Sun 1st Mar 26 at
4:30PM
How windy? (On the summits)
Southerly 20 to 25mph, in places gusty 30mph around higher tops.
Effect of the wind on you?
Blustery over higher terrain, affecting ease of walking and balance on exposed ridges. Marked wind chill.
How Wet?
Little if any precipitation
Risk of occasional fine drizzle mostly in the morning around low cloud.
Cloud on the hills?
Some cloud banks, likely to lift
Varied cloud banks in the morning tending to lift and gradually break above many hills. Areas north and northwest of Ogwen valley clearer overall, broken patches.
Chance of cloud free summits?
40% rising to 80%
Sunshine and air clarity?
Sunshine most common north coastal areas, may break through western areas more widely. Some haze, particularly coasts, but visibility fairly good inland.
How Cold? (at 900m)
4 or 5C. Directly in the wind feeling like -3 to -5C.
Freezing Level
Above the summits, but patchy frost some valleys at dawn.
Planning Outlook
Varying conditions over the next couple of weeks as areas of high pressure build across the British Isles then slip eastwards. Some dry and bright days with light winds mixed with periods of strengthening southerly winds bringing occasional rain coming in from the west - Thursday this week sees rain move increasingly onto western hills. Temperatures will vary, often lifting just above freezing to higher tops, but occasionally dropping back below freezing - chillier air briefly later this week. Some frosts into valleys. Remaining old snow cover on Scottish mountains stays largely consolidated with little change, patchy around highest tops in England and Wales.