September weather forecastKotka, Finland
September weather for Kotka, Finland: In Kotka, Finland, in September, the average water temperature is 14.9°C (58.8°F). September signifies the beginning of fall in Kotka, with a noticeable decline in daylight hours and falling sea temperatures.
September
Weather in September
September signifies the beginning of fall in Kotka, with a noticeable decline in daylight hours and falling sea temperatures. The sea temperatures drop to an average of 14.9°C (58.8°F), introducing cooler weather into the city. Despite the changes, September preserves a mild warmth, allowing for continuous engagement in outdoor activities. The shift in weather from August is indicative of the approaching winter months.Sea temperature
In Kotka, the average seawater temperature in September is 14.9°C (58.8°F).Note: In 14.9°C (58.8°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).
Daylight
In Kotka, Finland, the average length of the day in September is 12h and 53min.On the first day of the month, sunrise is at 06:07 and sunset at 20:16. On the last day of September, sunrise is at 07:16 and sunset at 18:47 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 Kotka, Finland, in September, the average water temperature is 14.9°C (58.8°F). Swimming in 14.9°C (58.8°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 Kotka, the average day length in September is 12h and 53min.
In September, on the first day of the month, sunrise is at 06:07 and sunset at 20:16. On the last day of the month, in Kotka, Finland, sunrise is at 07:16 and sunset at 18:47 EEST.
Average sea temperature in September
Kotka, Finland
- Average sea temperature in September: 14.9°C
The best month for swimming (with the highest average sea temperature) is July (18.9°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.2°C).
Average daylight in September
Kotka, 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).
