Snowdon Weather
Snowdon (Yr Wyddfa) Mountain Weather Forecast & Conditions
Snowdon Weather Forecast & Climbing Conditions
Planning a hike up Snowdon? Weather on the mountain changes quickly, and being prepared is essential for a safe and enjoyable climb. Below you’ll find the latest forecast, seasonal tips, and safety advice.
Current Snowdon Weather
This forecast shows:
Temperature at summit
Wind speed
Visibility
Rain/snow risk
Seasonal Conditions
Spring (March–May): Unpredictable showers, lingering snow at summit.
Summer (June–August): Warmer but crowded in the honey pots; thunderstorms possible.
Autumn (September–November): Clear days with stunning views, but shorter daylight hours.
Winter (December–February): Ice and snow common; specialist equipment recommended.
Safety Tips for Walkers/Hikers
Always carry waterproofs, warm layers, food & water, a torch, emergency shelter and map & compass.
- Make sure your phone is fully charged and carry a spare battery pack plus cable.
Check the forecast before setting out.
Allow extra time for poor visibility.
Consider a mountain skills course if inexperienced.
Yr Wyddfa Live
The latest weather and ground conditions for Yr Wyddfa (Snowdon).
Surface Pressure Charts (Met Office) & Rainfall Map
Other useful summits
Snowdon Weather – Planning Your Day
Here are some of the considerations that I take into account when planning my mountain day with the weather forecast.
Wind Speed & Direction
- Less than 10 mph (summit wind speeds) – ideal for hike and fly and no issues for walkers, climbers etc
- Less than 25 mph – great for ridge scrambling
- 25-50mph – avoid narrow ridges and think about finding routes that are sheltered from the wind.
- 50mp plus – think about valley walks and avoiding summits.
Precipitation
This will mean rain when summit temperatures are above 1-3 degrees centigrade. It will mean snow when the temperatures are below freezing.
Visibility will be reduced making navigation harder.
The rock will be slippery.
Rain plus wind equals very cold conditions where good waterproofs are required and hypothermia can be a real risk.
Temperature
You won’t die of a broken ankle but people do die from hypothermia on the UK mountains. I’m interested in the “feels like” temperature to make sure that I have enough clothing, hats, gloves etc. It can be 10 degrees colder on the summit than in the car park.
If the freezing level is below the summits then the ground can be icey and any old snow patches can be hard and slippery. Axe & crampons may be required. (See Killer Convex on Snowdon)
In the summer months I need to carry enough water and sun protection to avoid heat stroke or heat exhaustion. There is very little shade.
Sunrise & Sunset
I want to make sure my day finishes in the daylight. In the winter months that might mean starting earlier than normal. The majority of accidents happen in descent so stack the odds in your favour by finishing in the daylight.
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