December weather forecast
Copenhagen, Denmark

December in Copenhagen is characterized by cold temperatures and the anticipation of winter holidays. The thermometer averages around a high of 4.1°C (39.4°F) giving the city a taste of the intense cold to come in January. The snowfall and festive lights add to the charm of the city's Christmas markets. Despite the cold weather conditions, Copenhagen's December is a joyful and festive time, marking a beautiful end to the year.

Temperature

The average high-temperature during December registers at a cold 4.1°C (39.4°F), maintaining a close resemblance to the previous month. December in Copenhagen is characterized by a steady nighttime low-temperature of -0.2°C (31.6°F).

Humidity

In Copenhagen, the average relative humidity in December is 85%.

Rainfall

In Copenhagen, during December, the rain falls for 15.4 days and regularly aggregates up to 46mm (1.81") of precipitation. Throughout the year, in Copenhagen, there are 157.4 rainfall days, and 523mm (20.59") of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Copenhagen. In December, snow falls for 3.9 days. In Copenhagen, Denmark, during the entire year, snow falls for 21.5 days.

Sea temperature

In Copenhagen, the average seawater temperature in December is 5.6°C (42.1°F).
Note: Swimming in 5.6°C (42.1°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The month with the shortest days in Copenhagen is December, with an average of 7h and 6min of daylight.
On the first day of December in Copenhagen, sunrise is at 08:15 and sunset at 15:42. On the last day of the month, sunrise is at 08:38 and sunset at 15:47 CET.

Sunshine

The month with the least sunshine is December, with an average of 1.2h of sunshine.

UV index

The months with the lowest UV index in Copenhagen are January and December, with an average maximum UV index of 0. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 0 suggests these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.