Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Kalajoki, Finland

Sea temperature

In Kalajoki, Finland, the average seawater temperature in January is 0.3°C (32.5°F).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.


In Kalajoki, the average length of the day in January is 5.6h.

What is the water temperature in January in Kalajoki?

In Kalajoki, in January, the average water temperature is 0.3°C (32.5°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

How many hours of daylight does Kalajoki have in January?

In January, the average length of the day is 5.6h.
Average sea temperature in January - Kalajoki, Finland
  • Average sea temperature in January: 0.3°C

The best month for swimming (with the highest average sea temperature) is August (16.3°C).
The coldest month (with the lowest average sea temperature) is April (-0.3°C).

Average daylight in January - Kalajoki, Finland
  • Average daylight in January: 5.6h

The month with the longest days is June (Average daylight: 21h).
The month with shortest days is December (Average daylight: 4.3h).