Weather in September
Sea temperature
In Pernå, Finland, in September, the average water temperature is 14.9°C (58.8°F).Note: Being in 14.9°C (58.8°F) waters at 13°C (55.4°F) is discomforting, but anything below 10°C (50°F) can jeopardize breathing and induce cold shock, factoring in physical endurance.
Daylight
In September, the average length of the day is 12h and 53min.On the first day of September, sunrise is at 06:11 and sunset at 20:20. On the last day of the month, sunrise is at 07:20 and sunset at 18:50 EEST.
Frequently asked questions
What is the water temperature in September in Pernå?
In Pernå, Finland, the average seawater temperature in September is 14.9°C (58.8°F). Swimming in 14.9°C (58.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
How many hours of daylight does Pernå have in September?
In September, the average day length in Pernå, Finland, is 12h and 53min.
What time are sunrise and sunset in September in Pernå?
In September, on the first day of the month, sunrise is at 06:11 and sunset at 20:20. On the last day of the month, sunrise is at 07:20 and sunset at 18:50 EEST.
Average sea temperature in September
Pernå, Finland
- Average sea temperature in September: 14.9°C
The best month for swimming (with the highest average sea temperature) is July (18.8°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.1°C).
Average daylight in September
Pernå, 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).
Pernå, Finland
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
