December weather forecast
Turku, Finland

December, taking over the narrative from November, fully embraces winter in Turku. It has minimum daylight hours, further dimmed by the omnipresent cloud cover, which leads to short and dark days. The temperature, having plunged to a yearly low, and the frozen sea echo the harsh, yet enchanting winter conditions. The presence of snowfall further continues to enhance the snowy spectacle dominating the city. Despite the chills, December brings with it a festive mood, due to the holiday season, lighting up the cold and dark winter nights.

Temperature

The start of December in Turku, Finland, comes with a small reduction in the average high-temperature, subtly receding from an icy 3°C (37.4°F) in November to a subzero cold -0.1°C (31.8°F). Turku encounters a steady low-temperature average of -5.6°C (21.9°F) throughout the month of December.

Rainfall

In December, in Turku, the rain falls for 12 days. Throughout December, 70mm (2.76") of precipitation is accumulated. In Turku, during the entire year, the rain falls for 116 days and collects up to 723mm (28.46") of precipitation.

Sea temperature

In December, the average sea temperature is 2.1°C (35.8°F).
Note: In the practice of swimming, this situation poses immediate risks to life. Losing control over breathing is immediate, thereby making clear thinking near impossible. A specialized swimsuit is obligatory to restrict 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 December in Turku, sunrise is at 09:10 and sunset at 15:29. On the last day of the month, sunrise is at 09:37 and sunset at 15:30 EET.

Sunshine

December has the least sunshine of the year, with an average of 0.9h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 0. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 0 in December transforms into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.