Mountain weather

There may be weather warnings in force for the UK

Snowdonia Mountain weather forecast table

Confidence

High for fine and dry weather to dominate, moderate for cloud cover over the weekend.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.

hazard Strong sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.

Mountain weather forecast

Dry and sunny with a chilly start.

Wind direction and speed (mph)
Altitude above mean sea level
Wind gust (mph)
Altitude above mean sea level

Altitude above mean sea level

Altitude above mean sea level

Additional weather information

Meteorologist's view

It will be a chilly start to the day but temperatures soon warm up and with high UV levels sun protection and water will be very important.

Weather

A warm, dry and sunny day. By late afternoon cloud cover will increase but it will remain bright and feel very pleasant in the sunshine with high UV levels. Variable cloud cover overnight will keep temperatures a little warmer than recent nights.

Chance of cloud-free mountain/hill tops at 800m

100%

Visibility

Excellent.

Ground conditions

Please see - https://www.eryri.llyw.cymru/visiting/walking/ground-conditions

Sunrise:
Sunset:

Mountain weather information

Weather

Dry and bright day, with high level cloud creating hazier sunshine. UV levels will remain high through the day, though temperatures will be a little cooler than Friday, particularly on hill tops where there will be a strong breeze. Dry overnight but becoming a little cloudier.

Chance of cloud-free mountain/hill tops at 800m

100% becoming 80% overnight as patchy cloud may cover some hill tops with bases of 500-800m

Maximum wind speed expected

Easterly 20mph with gusts of up to 35mph.

Temperature

  • At 800m Plus 2 Celsius becoming Plus 9 Celsius.
  • Valley Plus 7 Celsius becoming Plus 16 Celsius.
  • Freezing level 1200m

Visibility

Excellent through the day, becoming poor at times in low cloud overnight.

Mountain weather information

Sunday 25 April

Sunrise:
Sunset:

A dry and bright day, feeling cooler in the north-easterly breeze. Freezing level 800m.

Monday 26 April

Sunrise:
Sunset:

Cloudy but dry throughout the day. Still feeling cool in a northerly breeze. Freezing level 1000m.

Tuesday 27 April

Sunrise:
Sunset:

Cloudy and cool with some light rain at times and a northerly breeze. Freezing level 1000m.

Updated at:

The region can be divided into four areas with the northernmost area the most popular, including peaks such as Moel Hebog, Mynydd Mawr and the Nantlle Ridge. Many hikers tend to concentrate on Snowdon itself regarding it as a fine mountain. However it can become quite crowded, with the peak welcoming around half a million visitors every year, of which four fifths scale the peak on foot, while the remainder choose to take the train instead.

One of Snowdon’s main attractions is the sheer number and variety of paths that reach the peak. This means that everyone from mountaineering novices to climbing experts should find a way up the mountain that will suit their abilities or provide them with a sufficient test. The easiest is the Llanberis path which, being the longest, has the most shallow ascent. In contrast, the Watkin Path is widely seen as being the most demanding ascent, despite also being considered the prettiest.