December weather forecastSestao, Spain

December

Weather in December

Sea temperature

In Sestao, Spain, in December, the average water temperature is 14.3°C (57.7°F).
Note: To swim in 14.3°C (57.7°F) at less than 10°C (50°F), ensure you're well-protected. Without it, be prepared for a sudden jolt of cold and breathing issues. Remember, even 13°C (55.4°F) is not welcoming.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of December in Sestao, sunrise is at 08:24 and sunset at 17:37. On the last day of the month, sunrise is at 08:44 and sunset at 17:46 CET.

Frequently asked questions

In Sestao, Spain, in December, the average water temperature is 14.3°C (57.7°F). Swimming in 14.3°C (57.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

December has the shortest days of the year in Sestao, Spain, with an average of 9h and 0min of daylight.

In December, the average day length in Sestao is 9h and 2min.

On the first day of December in Sestao, Spain, sunrise is at 08:24 and sunset at 17:37. On the last day of the month, sunrise is at 08:44 and sunset at 17:46 CET.
Average sea temperature
Average daylight

Average sea temperature in December
Sestao, Spain

  • Average sea temperature in December: 14.3°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 December
Sestao, Spain

  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).