Digital Map Data:
© Collins Bartholomew Ltd (2006)
Postcode information:
© Royal Mail Group PLC (2006)
Snowdonia: latest pressure
Tuesday, 22 May 2012: dawn to dusk
Printable view Forecast issued: 1609 on Tuesday, 22 May 2012
Overview for Wednesday
Early fog and low cloud will clear most parts to leave it dry, sunny and very warm.
| Hazards | Risk | Explanation |
|---|---|---|
| Blizzards | No Risk | |
| Heavy snow | No Risk | |
| Storm force winds | No Risk | |
| Gales | No Risk | |
| Severe chill effect | No Risk | |
| Persistent and extensive hill fog | No Risk | |
| Thunderstorms | No Risk | |
| Heavy persistent rain | No Risk | |
| Strong Sunlight | High | High risk of sunburn, particularly in eastern parts. |
key to hazards and forecast content
| Dawn to 0900 | 0900 to 1200 | 1200 to 1500 | 1500 to dusk |
 Sunny intervals |
 Sunny |
Sunny |
Sunny |
| 0% | 0% | 0% | 0% |
Detailed mountain weather forecast: Snowdonia
Wednesday
Weather
Early morning low cloud or fog in the valleys will clear through the morning to leave it dry, sunny and very warm in light winds. There is a continued risk of sunburn for the unprotected.
Visibility
Generally good or very good but poor or very poor in mist and fog.
Hill fog
Early morning fog in the valleys will slowly lift and clear through the morning.
Maximum winds above 500m
Southerly becoming southwesterly 10.
Temperature
| Valleys | Plus 8 Celsius increasing to plus 22 Celsius |
| 900 m | Plus 12 Celsius. |
| Freezing level | Well above the summits. |
Thursday
Weather
Low cloud and fog is expected to form in valleys again overnight but this should clear for most places through the morning leaving it dry and warm with plenty of sunshine.
Visibility
Generally good but poor or very poor in mist and fog.
Hill fog
Fog in valleys should lift and clear through the morning.
Maximum winds above 500m
Easterly to southeasterly 10.
Temperature
| Valleys | Plus 10 Celsius increasing to plus 24 Celsius. |
| 900 m | Plus 13 Celsius. |
| Freezing level | Well above the summits. |
Outlook
Friday
Dry and clear with plenty of warm sunshine. Easterly winds will increase through the day making it feel a little fresher than recent days, although there is still a high risk of sunburn. Freezing levels well above the summits.
Saturday
A dry and sunny day with fresh easterly winds. Freezing levels well above the summits.
Sunday
Remaining dry with plenty of warm sunshine and fresh easterly winds. Freezing levels well above the summits.
Observations
Webcams
The Met Office is not responsible for the content of external sites. If you would like to consider adding a link to your webcam, please contact us.
The Enhanced Mountain forecast for Snowdonia has been discontinued. All forecast information for these locations can be found in the standard Mountain forecast above.
RSS warnings and alerts
Regional warning and alert feeds
Weather gadgets
Vista weather gadget
Firefox weather gadget
Related internet links
Avalanche Information for Scotland
The Met Office is not responsible for the content of external internet sites.
