Weather in December
Sea temperature
In December, the average sea temperature in Heligoland, Germany, is 6.9°C (44.4°F).Note: Unprotected swimming in 6.9°C (44.4°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
The month with the shortest days is December, with an average of 7h and 30min of daylight.On the first day of the month, sunrise is at 08:25 and sunset at 16:09. On the last day of December, sunrise is at 08:48 and sunset at 16:15 CET.
Frequently asked questions
What is the sea water temperature in December in Heligoland?
In Heligoland, the average seawater temperature in December is 6.9°C (44.4°F). Swimming in 6.9°C (44.4°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 month with the shortest days in Heligoland?
The month with the shortest days in Heligoland, Germany, is December, with an average of 7h and 30min of daylight.
How many hours of daylight does Heligoland have in December?
In Heligoland, Germany, the average day length in December is 7h and 27min.
When are sunrise and sunset in December in Heligoland?
On the first day of December in Heligoland, sunrise is at 08:25 and sunset at 16:09. On the last day of the month, sunrise is at 08:48 and sunset at 16:15 CET.
Average sea temperature in December
Heligoland, Germany
- Average sea temperature in December: 6.9°C
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest months (with the lowest average sea temperature) are January and February (4.4°C).
Average daylight in December
Heligoland, Germany
- Average daylight in December: 7h and 3min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
Heligoland, Germany
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