Weather in December
Sea temperature
In December, the average sea temperature in Årstein, Norway, is 6.2°C (43.2°F).Note: Immersing oneself in 6.2°C (43.2°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
In December, the average length of the day in Årstein is 0h and 6min.Frequently asked questions
How cold is the water in December in Årstein?
In December, the average sea temperature in Årstein, Norway, is 6.2°C (43.2°F). Swimming in 6.2°C (43.2°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.
What is the average length of the day in December in Årstein?
In December, the average day length in Årstein, Norway, is 0h and 6min.
Average sea temperature in December
Årstein, Norway
- Average sea temperature in December: 6.2°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 December
Årstein, Norway
- Average daylight in December: 0h and 1min
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).
Årstein, Norway
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