December weather forecastViken, Sweden

December

Weather in December

The first month of the winter, December, is also a wintry month in Viken, Sweden, with an average temperature ranging between min 2.2°C (36°F) and max 4.5°C (40.1°F).

Temperature

A moderate decline in average high-temperatures is noted in December, moving from a frosty 7.6°C (45.7°F) in November to a cold 4.5°C (40.1°F). A steady low-temperature average of 2.2°C (36°F) is logged during December, reflecting a modest dip from daytime readings.

Humidity

The average relative humidity in December in Viken, Sweden, is 85%.

Rainfall

In December, the rain falls for 15.4 days. Throughout December, 29mm (1.14") of precipitation is accumulated. Throughout the year, in Viken, there are 160.1 rainfall days, and 338mm (13.31") of precipitation is accumulated.

Snowfall

Months with snowfall in Viken are January through May, November and December. In Viken, Sweden, during December, snow falls for 5.8 days and regularly aggregates up to 29mm (1.14") of snow. In Viken, during the entire year, snow falls for 27.6 days and aggregates up to 114mm (4.49") of snow.

Daylight

With an average of 7h and 0min of daylight, December has the shortest days of the year in Viken.
On the first day of the month, sunrise is at 08:18 and sunset at 15:39. On the last day of December, sunrise is at 08:41 and sunset at 15:43 CET.

Sunshine

With an average of 3.2h of sunshine, December has the least sunshine of the year in Viken, Sweden.

UV index

The average daily maximum UV index in December in Viken is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 2 in December translates into these instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.

Frequently asked questions

In Viken, in December, the average high-temperature is 4.5°C (40.1°F), and the average low-temperature is 2.2°C (36°F).

The average relative humidity in December is 85%.

In Viken, in December, it is raining for 15.4 days, with typically 29mm (1.14") of accumulated precipitation.

In Viken, Sweden, in December, during 5.8 snowfall days, 29mm (1.14") of snow is typically accumulated.

With an average of 7h and 0min of daylight, December has the shortest days of the year in Viken, Sweden.

The average day length in December is 7h and 2min.

In December, on the first day of the month, sunrise is at 08:18 and sunset at 15:39. On the last day of the month, sunrise is at 08:41 and sunset at 15:43 CET.

With an average of 3.2h of sunshine, December has the least sunshine of the year in Viken, Sweden.

In December, the average sunshine duration is 3.2h.

The average daily maximum UV index in December in Viken, Sweden, is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Viken, Sweden

  • Average high temperature in December: 4.5°C

The warmest month (with the highest average high temperature) is August (19.9°C).
The month with the lowest average high temperature is February (2.3°C).

  • Average low temperature in December: 2.2°C

The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (-0.2°C).

Average pressure in December
Viken, Sweden

  • Average pressure in December: 1010.5mbar

The month with the highest atmospheric pressure is April (1015.4mbar).
The month with the lowest atmospheric pressure is December (1010.5mbar).

Average wind speed in December
Viken, Sweden

  • Average wind speed in December: 23.6km/h

The windiest month (with the highest average wind speed) is December (23.6km/h).
The calmest months (with the lowest average wind speed) are May and June (16.5km/h).

Average humidity in December
Viken, Sweden

  • Average humidity in December: 85%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (74%).

Average rainfall in December
Viken, Sweden

  • Average rainfall in December: 29mm

The wettest month (with the highest rainfall) is August (46mm).
The driest month (with the least rainfall) is April (14mm).

Average rainfall days in December
Viken, Sweden

  • Average rainfall days in December: 15.4 days

The month with the highest number of rainy days is August (18.2 days).
The month with the least rainy days is February (8.8 days).

Average snowfall in December
Viken, Sweden

  • Average snowfall in December: 29mm

The month with the highest snowfall is February (37mm).
The months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in December
Viken, Sweden

  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is February (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Viken, Sweden

  • Average daylight in December: 7h and 0min

The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 0min).

  • Average sunshine in December: 3h and 12min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).

Average sunshine days in December
Viken, Sweden

  • Average sunshine days in December: 8.7 days

The month with the most sunshine days is April (16.1 days).
The month with the least sunshine days is December (8.7 days).

Average UV index in December
Viken, Sweden

  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Viken, Sweden

  • Average cloud cover in December: 68

The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 38).

Average visibility in December
Viken, Sweden

  • Average visibility in December: 9km

The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).