Weather in September
Sea temperature
In Brønnøysund, Norway, the average seawater temperature in September is 12.5°C (54.5°F).Note: Staying in 12.5°C (54.5°F) waters for just a few moments at 13°C (55.4°F) can be harrowing, and below 10°C (50°F) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
The average length of the day in September is 13h and 5min.On the first day of the month, sunrise is at 05:50 and sunset at 20:31. On the last day of September, sunrise is at 07:19 and sunset at 18:42 CEST.
Frequently asked questions
How cold is the water in September in Brønnøysund?
In Brønnøysund, Norway, in September, the average water temperature is 12.5°C (54.5°F). Swimming in 12.5°C (54.5°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.
How many hours of daylight does Brønnøysund have in September?
In September, the average day length in Brønnøysund, Norway, is 13h and 5min.
When are sunrise and sunset in September in Brønnøysund?
On the first day of September, sunrise is at 05:50 and sunset at 20:31. On the last day of the month, sunrise is at 07:19 and sunset at 18:42 CEST.
Average sea temperature in September
Brønnøysund, Norway
- Average sea temperature in September: 12.5°C
The best month for swimming (with the highest average sea temperature) is July (13.8°C).
The coldest month (with the lowest average sea temperature) is March (4.4°C).
Average daylight in September
Brønnøysund, Norway
- Average daylight in September: 13h and 1min
The month with the longest days is June (Average daylight: 22h and 18min).
The month with the shortest days is December (Average daylight: 3h and 36min).
Brønnøysund, Norway
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