September weather forecast and climate
Espoo, Finland

Weather in September

Sea temperature

In Espoo, Finland, the average seawater temperature in September is 15.4°C (59.7°F).
Note: For most, swimming in 15.4°C (59.7°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Espoo, the average length of the day in September is 12.9h.
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FAQ

How cold is the water in September in Espoo?

In Espoo, Finland, in September, the average water temperature is 15.4°C (59.7°F). For most, swimming in 15.4°C (59.7°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in September in Espoo?

The average length of the day in September is 12.9h.

Average sea temperature in September
Espoo, Finland

Average sea temperature in September - Espoo, Finland
  • Average sea temperature in September: 15.4°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).

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Average daylight in September
Espoo, Finland

Average daylight in September - Espoo, Finland
  • Average daylight in September: 12.9h

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

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