Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Kalajoki, Finland

Sea temperature

In October, the average sea temperature in Kalajoki, Finland, is 7.8°C (46°F).
Note: Swimming in 7.8°C (46°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.


The average length of the day in October is 9.7h.

What is the sea water temperature in October in Kalajoki?

In Kalajoki, Finland, the average seawater temperature in October is 7.8°C (46°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.

How many hours of daylight does Kalajoki have in October?

The average length of the day in October in Kalajoki is 9.7h.
Average sea temperature in October - Kalajoki, Finland
  • Average sea temperature in October: 7.8°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 October - Kalajoki, Finland
  • Average daylight in October: 9.7h

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