Weather in December
Sea temperature
In Pernå, Finland, the average seawater temperature in December is 3.5°C (38.3°F).Note: In the realm of swimming, this state is extremely cold, treacherous, and life-threatening. Without properly insulated waterproof clothing, hypothermia develops almost immediately.
Daylight
December has the shortest days of the year, with an average of 5h and 54min of daylight.On the first day of December in Pernå, sunrise is at 08:55 and sunset at 15:14. On the last day of the month, sunrise is at 09:22 and sunset at 15:15 EET.
Frequently asked questions
How cold is the water in December in Pernå?
In Pernå, the average seawater temperature in December is 3.5°C (38.3°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.
What is the month with the shortest days in Pernå?
December has the shortest days of the year, with an average of 5h and 54min of daylight.
What is the average length of the day in December in Pernå?
The average day length in December is 5h and 54min.
When is the sunrise / sunset in December in Pernå?
In December, on the first day of the month, sunrise is at 08:55 and sunset at 15:14. On the last day of the month, in Pernå, Finland, sunrise is at 09:22 and sunset at 15:15 EET.
Average sea temperature in December
Pernå, Finland
- Average sea temperature in December: 3.5°C
The best month for swimming (with the highest average sea temperature) is July (18.8°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.1°C).
Average daylight in December
Pernå, Finland
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
Pernå, Finland
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