September weather forecast
Espoo, Finland

Weather in September

Sea temperature

In September, the average sea temperature in Espoo, Finland, is 15.4°C (59.7°F).
Note: Swimming in 15.4°C (59.7°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

The average length of the day in September in Espoo is 12h and 52min.
On the first day of the month, sunrise is at 06:15 and sunset at 20:26. On the last day of September, in Espoo, sunrise is at 07:24 and sunset at 18:58 EEST.
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FAQ

How cold is the water in September in Espoo?

In Espoo, Finland, the average seawater temperature in September 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).

How many hours of daylight does Espoo have in September?

In September, the average day length in Espoo, Finland, is 12h and 52min.

What time are sunrise and sunset in September in Espoo?

On the first day of September in Espoo, sunrise is at 06:15 and sunset at 20:26. On the last day of the month, sunrise is at 07:24 and sunset at 18:58 EEST.

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: 12h and 52min

The month with the longest days is June (Average daylight: 18h and 47min).
The month with the shortest days is December (Average daylight: 5h and 59min).

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