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Snowdonia Monthly Climate Averages
To help you choose the best time to travel, you can find climate data below on the weather in Snowdonia .
Month | t°C day |
t°C night |
mm rain |
daylight |
January | +6.8 | +2.3 | 182 | 8.9h |
February | +7.1 | +1.8 | 136 | 10.5h |
March | +8.9 | +3 | 159 | 12.5h |
April | +11.3 | +4.2 | 122 | 14.7h |
May | +14.5 | +7.3 | 105 | 16.6h |
June | +16.8 | +9.7 | 128 | 17.7h |
July | +18.4 | +11.9 | 143 | 17.1h |
August | +18.7 | +11.8 | 159 | 15.3h |
September | +16 | +9.4 | 165 | 13.2h |
October | +13.1 | +7.1 | 220 | 11.1h |
November | +9.9 | +4.4 | 218 | 9.3h |
December | +7.6 | +2.4 | 208 | 8.4h |
Best time with the soft weather for the sightseeing and long walks in Snowdonia are July, August.
Temperature in Snowdonia
The table shows that the hottest months in Snowdonia are August and July, during which the average daytime temperature reaches +18.7°C and the nighttime temperature falls to +11.8°C.
The coldest months are January and February, when the daily average temperature falls to +6.8°C, and drops to +2.3°C during the night.
Most booked hotels in Snowdonia
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Precipitation
The largest amount of precipitation falls on average in October and November, up to 220mm, and the least in May and April — up to 105mm.