Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Hamina, Finland

Sea temperature

In Abril, the average sea temperature in Hamina, Finland, is 1.3°C (34.3°F).
Note: 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.


In Hamina, the average length of the day in Abril is 14.7h.

How cold is the water in Abril in Hamina?

In Hamina, Finland, the average seawater temperature in Abril is 1.3°C (34.3°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Hamina have in Abril?

In Abril, the average length of the day in Hamina, Finland, is 14.7h.
Average sea temperature in April - Hamina, Finland
  • Average sea temperature in April: 1.3°C

The best month for swimming (with the highest average sea temperature) is July (19.3°C).
The coldest month (with the lowest average sea temperature) is February (-0.5°C).

Average daylight in April - Hamina, Finland
  • Average daylight in April: 14.7h

The month with the longest days is June (Average daylight: 18.9h).
The month with shortest days is December (Average daylight: 5.9h).