Sestao
Spain
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Sestao, Spain

Sea temperature

In Sestao, Spain, in September, the average water temperature is 20.6°C (69.1°F).
Note: For swimming, a surface water temperature of 20.6°C (69.1°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In September, the average length of the day is 12.5h.

What is the sea temperature in September in Sestao?

In September, the average sea temperature is 20.6°C (69.1°F). For most, swimming in 20.6°C (69.1°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in September in Sestao?

In Sestao, Spain, the average length of the day in September is 12.5h.
Average sea temperature in September - Sestao, Spain
  • Average sea temperature in September: 20.6°C

The best month for swimming (with the highest average sea temperature) is August (21.2°C).
The coldest month (with the lowest average sea temperature) is February (12.7°C).

Average daylight in September - Sestao, Spain
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).