Use my current location crosshair
yellow Warnings have been issued for the United Kingdom

Snowdonia

Weather hazards over 300m on Mon 22 Dec 2014

High risk

Gales
Windy across all parts, with gusts of 45-55mph quite widely.
Persistent extensive hill fog
Fairly extensive cloud generally above 400-600m throughout. Best of any breaks in the east.

Medium risk

Severe chill effect
Strong winds will make it feel more like minus 2 to minus 4 over the peaks.
Heavy persistent rain
Rain is likely to be persistent and sometimes heavy across western facing slopes during the day.

Low risk

Storm force winds
Gusts of 60-70mph possible at times over the highest peaks.

No risk

Blizzards
none
Heavy snow
none
Thunderstorms
none
Strong sunlight
none

Mon 22 Dec 2014

It will continue to be cloudy, damp and windy across the park on Monday, with spells of rain or drizzle, which is likely to be more persistent and sometimes heavy across western and northern slopes. The best of the drier conditions will be across eastern parts, where a little brightness is also possible in the day.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Cloudy Cloudy Cloudy Heavy rain Heavy rain Cloudy
Precipitation probability
50-70% 50-70% 50-70% 70-90% 70-90% 50-70%

Visibility

Generally good or moderate, but poor in rain and drizzle and very poor in hill fog.

Hill Fog

Broken to blanket cloud will lead to fairly extensive and persistent hill fog above 400-500 metres, and perhaps some patches down to 300m across western facing slopes. Cloud bases are likely to be a little higher across eastern parts of the park at times however.

Max wind above 500m

West-southwesterly 80mph.

Temperature

Valleys:
Plus 7 Celsius, becoming plus 9 Celsius.
800m:
Plus 5 Celsius.
Freezing level:
Above the summits.

Ground conditions

Date of latest observation: 20/12/14. Observation made on: Snowdon. Time of observation: 13:00. Winter conditions above: 950m. Ground Conditions: Isolated patches of snow. Observations on: Llanberis path and Pyg Track - Only small patches of snow still remain along the edges of the Llanberis path above 900m. Along the Pyg Track there are still some patches of compacted snow covering the footpath up the ZigZags (from 900m upward). Kit Advice:Recommended to carry ice axe and crampons, Walking poles can provide an aid to balance and security when walking through unconsolidated snow, Take waterproofs, hat, gloves and spare warm layers

Issued at: 0239 on Mon 22 Dec 2014

Tue 23 Dec 2014

Conditions will be very similar to Monday, with mainly cloudy, wet and windy conditions continuing across the park. Rain is likely to be persistent across western facing slopes and could also be heavy at times, especially during the evening. The best of the drier conditions will be across eastern parts, where a little brightness is also possible in the day. Despite the generally mild conditions, it will feel cold in exposure due to the strong winds.

Visibility

Generally good or moderate, but poor in rain and drizzle and very poor in hill fog.

Hill Fog

Broken to blanket cloud will lead to fairly extensive and persistent hill fog above 400-500 metres, and perhaps some patches down to 300m across western facing slopes. Cloud bases are likely to be a little higher across eastern parts of the park at times however.

Max wind above 500m

West-southwesterly 70mph.

Temperature

Valleys:
Plus 6 Celsius, becoming plus 9 Celsius.
800m:
Plus 4 Celsius.
Freezing level:
Above the summits.

Issued at: 0239 on Mon 22 Dec 2014

Wed 24 Dec 2014

Colder, clearer conditions are likely to spread southwards during the first parts of Christmas Eve. Winds will ease, but it will remain quite windy, which will make it feel cold. The odd shower is also possible, which is likely to fall as sleet or snow above 400 metres. Freezing level will be above the summits at first, but will become 600-700 metres through the day.

Issued at: 0239 on Mon 22 Dec 2014

Thu 25 Dec 2014

Christmas Day will be a mostly dry and bright day, after quite a cold start, with a patchy frost in sheltered valleys. The odd shower is possible at times, which is likely to fall as sleet or snow above 500 metres. Winds will also be much lighter than of late. Freezing level around 700-900 metres.

Issued at: 0239 on Mon 22 Dec 2014

Fri 26 Dec 2014

A cold and fine start to Boxing Day with a widespread frost likely. It is then likely to remain dry for much of the day, but more unsettled conditions and stronger winds may spread eastwards later. Freezing level around 700-900 metres.

Issued at: 0239 on Mon 22 Dec 2014