Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Zumaia, Spain

Sea temperature

In December, the average sea temperature in Zumaia, Spain, is 14.3°C (57.7°F).
Note: Swimming in 14.3°C (57.7°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.


The month with the shortest days is December, with an average of 9h of daylight.

How cold is the water in December in Zumaia?

In Zumaia, the average seawater temperature in December is 14.3°C (57.7°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the month with the shortest days in Zumaia?

With an average of 9h of daylight, December has the shortest days of the year.

How many hours of daylight does Zumaia have in December?

In Zumaia, the average length of the day in December is 9h.
Average sea temperature in December - Zumaia, Spain
  • Average sea temperature in December: 14.3°C

The best month for swimming (with the highest average sea temperature) is August (21.3°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).

Average daylight in December - Zumaia, Spain
  • Average daylight in December: 9h

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