December weather forecastÖstermalm, Sweden
December
Weather in December
Sea temperature
In Östermalm, Sweden, the average seawater temperature in December is 4.8°C (40.6°F).Note: In the sphere of swimming, this is extremely cold and poses life-endangering hazards. Hypothermia can occur almost instantly in the absence of insulated waterproof wear.
Daylight
The month with the shortest days is December, with an average of 6h and 12min of daylight.On the first day of the month, sunrise is at 08:18 and sunset at 14:55. On the last day of December, sunrise is at 08:43 and sunset at 14:57 CET.
Updated: Feb 2, 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 Östermalm, Sweden, in December, the average water temperature is 4.8°C (40.6°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.
December has the shortest days of the year in Östermalm, Sweden, with an average of 6h and 12min of daylight.
In December, the average day length in Östermalm, Sweden, is 6h and 14min.
In December, on the first day of the month, sunrise is at 08:18 and sunset at 14:55. On the last day of the month, in Östermalm, Sweden, sunrise is at 08:43 and sunset at 14:57 CET.
Average sea temperature in December
Östermalm, Sweden
- Average sea temperature in December: 4.8°C
The best month for swimming (with the highest average sea temperature) is August (18.8°C).
The coldest month (with the lowest average sea temperature) is February (1°C).
Average daylight in December
Östermalm, Sweden
- Average daylight in December: 6h and 12min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
