December weather forecast
Oslo, Norway

December wraps up the year with a prominent winter feel in Oslo. The dropping temperatures, which reach lows of -5.6°C (21.9°F), combined with a brief 6.1 hours of daylight, create a truly authentic winter atmosphere. Despite the chilly conditions, the city's festive lights and holiday markets add warmth and cheer. Ice-skating rinks and colorful Christmas markets are integral to the cheerful spirit that defines an Oslo December.

Temperature

December is characterized by a slight reduction in average high-temperature, easing from a wintry 3.2°C (37.8°F) in November to a subzero cold -0.5°C (31.1°F). During December, Oslo sees a mean low-temperature of -5.6°C (21.9°F).

Rainfall

In Oslo, during December, the rain falls for 6 days and regularly aggregates up to 55mm (2.17") of precipitation. In Oslo, during the entire year, the rain falls for 77 days and collects up to 763mm (30.04") of precipitation.

Sea temperature

In Oslo, Norway, the average seawater temperature in December is 6.3°C (43.3°F).
Note: It is life-risking to swim in 6.3°C (43.3°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.

Daylight

With an average of 6h and 6min of daylight, December has the shortest days of the year in Oslo.
On the first day of December, sunrise is at 08:52 and sunset at 15:20. On the last day of the month, sunrise is at 09:18 and sunset at 15:21 CET.

Sunshine

With an average of 1.1h of sunshine, December has the least sunshine of the year in Oslo, Norway.

UV index

January, November and December, with an average maximum UV index of 0, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 0 suggests this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.