May weather forecast and climate
Espoo, Finland

Sea temperature

In Espoo, Finland, in May, the average water temperature is 6.8°C (44.2°F).
Note: Swimming in 6.8°C (44.2°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.


In May, the average length of the day in Espoo is 17.3h.

What is the sea water temperature in May in Espoo?

In May, the average sea temperature in Espoo is 6.8°C (44.2°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 Espoo have in May?

In May, the average length of the day in Espoo is 17.3h.
Average sea temperature in May - Espoo, Finland
  • Average sea temperature in May: 6.8°C

The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is March (0.1°C).

Average daylight in May - Espoo, Finland
  • Average daylight in May: 17.3h

The month with the longest days is June (Average daylight: 18.8h).
The month with the shortest days is December (Average daylight: 6h).