Weather in December
December announces the arrival of winter in
Merimasku,
Finland. The seawater temperature dips down to 1.8°C (35.2°F), returning to near-
January levels and confirming the prevalence of cold conditions. Daylight hours shrink considerably from
November, being briefest in the year, defining the typical Nordic winter. This chill transition from November intensifies towards the end of December as the town blanketed in snow commences the festive season. Despite the cold, residents embrace December for its atmospheric charm, festive joy, and the enchanting aurora borealis sighting opportunities.
Sea temperature
In Merimasku, the average seawater temperature in December is 1.8°C (35.2°F).
Note: In swimming, this scenario poses immediate life-threatening danger. Breathing control is totally lost and logical thinking nearly impossible. Wearing a specialized swimsuit is critical to limit thermal loss.
Daylight
The month with the shortest days is December, with an average of 5h and 54min of daylight.
On the first day of the month, sunrise is at 09:12 and sunset at 15:31. On the last day of December, in Merimasku, Finland, sunrise is at 09:39 and sunset at 15:32 EET.