September weather forecastLangesund, Norway
September
Weather in September
Sea temperature
In Langesund, Norway, in September, the average water temperature is 15.8°C (60.4°F).Note: Swimming in water that is 15.8°C (60.4°F) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Langesund is 12h and 50min.On the first day of September, sunrise is at 06:19 and sunset at 20:21. On the last day of the month, sunrise is at 07:24 and sunset at 18:56 CEST.
Updated: Jan 26, 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 Langesund, Norway, the average seawater temperature in September is 15.8°C (60.4°F). Swimming in 15.8°C (60.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
In September, the average day length is 12h and 50min.
In September, on the first day of the month, sunrise is at 06:19 and sunset at 20:21. On the last day of the month, sunrise is at 07:24 and sunset at 18:56 CEST.
Average sea temperature in September
Langesund, Norway
- Average sea temperature in September: 15.8°C
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).
Average daylight in September
Langesund, Norway
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).





