September weather forecastHamina, Finland
September
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.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.
Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
In September, the average day length in Hamina, Finland, is 12h and 53min.
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 54min
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).
