Weather in September
September welcomes the arrival of autumn in Hamina. The sea temperature cools down to 15.1°C (59.2°F) as the season transitions from summer to fall. It is the perfect month to witness the splendid fall foliage, as the city transforms into a spectacle of brilliant hues. Despite the decrease in daylight hours, the pleasant weather conditions make September an appealing time to explore the scenic city.
Note: The majority of individuals find swimming in 15.1°C (59.2°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
On the first day of the month, sunrise is at 06:06 and sunset at 20:16. On the last day of September, sunrise is at 07:15 and sunset at 18:46 EEST.
[Resources]Sea temperature
In Hamina, Finland, the average seawater temperature in September is 15.1°C (59.2°F).Note: The majority of individuals find swimming in 15.1°C (59.2°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 53min.On the first day of the month, sunrise is at 06:06 and sunset at 20:16. On the last day of September, sunrise is at 07:15 and sunset at 18:46 EEST.
Frequently asked questions
What is the sea water temperature in September in Hamina?
In Hamina, Finland, the average seawater temperature in September is 15.1°C (59.2°F). For most, swimming in 15.1°C (59.2°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 Hamina?
In September, the average day length in Hamina, Finland, is 12h and 53min.
What time are sunrise and sunset in September in Hamina?
In September, on the first day of the month, sunrise is at 06:06 and sunset at 20:16. On the last day of the month, in Hamina, Finland, sunrise is at 07:15 and sunset at 18:46 EEST.
Average sea temperature in September
Hamina, Finland
- Average sea temperature in September: 15.1°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 September
Hamina, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
Hamina, Finland
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