Alderney
Guernsey
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Alderney, Guernsey

  • Average sea temperature in August: 17.2°C

The best month for swimming (with the highest average sea temperature) is September (17.4°C).
The coldest month (with the lowest average sea temperature) is March (9.3°C).

  • Average daylight in August: 14.4h

The month with the longest days is June (Average daylight: 16.2h).
The month with shortest days is December (Average daylight: 8.2h).

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