September weather forecastHatteng, Norway
September
Weather in September
Sea temperature
In Hatteng, Norway, the average seawater temperature in September is 10.3°C (50.5°F).Note: If planning to swim in 10.3°C (50.5°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
The average length of the day in September is 13h and 18min.On the first day of the month, sunrise is at 05:02 and sunset at 20:17. On the last day of September, in Hatteng, Norway, sunrise is at 06:53 and sunset at 18:06 CEST.
Updated: Jan 27, 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 Hatteng, Norway, the average seawater temperature in September is 10.3°C (50.5°F). Swimming in 10.3°C (50.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
In September, the average day length in Hatteng is 13h and 18min.
In September, on the first day of the month, sunrise is at 05:02 and sunset at 20:17. On the last day of the month, in Hatteng, sunrise is at 06:53 and sunset at 18:06 CEST.
Average sea temperature in September
Hatteng, Norway
- Average sea temperature in September: 10.3°C
The best month for swimming (with the highest average sea temperature) is August (11.8°C).
The coldest month (with the lowest average sea temperature) is March (3.7°C).
Average daylight in September
Hatteng, Norway
- Average daylight in September: 13h and 18min
The month with the longest days is August (Average daylight: 17h and 54min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).





