September weather forecastÅrstein, Norway
September
Weather in September
Sea temperature
In Årstein, Norway, in September, the average water temperature is 10.8°C (51.4°F).Note: It is life-risking to swim in 10.8°C (51.4°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The average length of the day in September in Årstein is 13h and 16min.On the first day of September, sunrise is at 05:14 and sunset at 20:24. On the last day of the month, sunrise is at 07:02 and sunset at 18:17 CEST.
Updated: Aug 14, 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 Årstein, the average seawater temperature in September is 10.8°C (51.4°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
The average day length in September in Årstein is 13h and 16min.
In September, on the first day of the month, sunrise is at 05:14 and sunset at 20:24. On the last day of the month, sunrise is at 07:02 and sunset at 18:17 CEST.
Average sea temperature in September
Årstein, Norway
- Average sea temperature in September: 10.8°C
The best month for swimming (with the highest average sea temperature) is August (12.3°C).
The coldest month (with the lowest average sea temperature) is March (3.7°C).
Average daylight in September
Årstein, Norway
- Average daylight in September: 13h and 18min
The month with the longest days is August (Average daylight: 17h and 36min).
The month with the shortest days is June (Average daylight: 0h and 0min).
