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

August weather forecast and climate
Alderney, Guernsey

Sea temperature

In Agosto, the average sea temperature in Alderney, Guernsey, is 17.2°C (63°F).
Note: Swimming in 17.2°C (63°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In Agosto, the average length of the day in Alderney is 14.4h.

What is the sea temperature in Agosto in Alderney?

In Alderney, Guernsey, in Agosto, the average water temperature is 17.2°C (63°F). Swimming in 17.2°C (63°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Alderney have in Agosto?

The average length of the day in Agosto in Alderney is 14.4h.
Average sea temperature in August - 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 - Alderney, Guernsey
  • 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).