December weather forecastTønsberg, Norway
December
Weather in December
The end of the year brings the coldest period in Tønsberg, characterised by limited daylight hours and heavy snowfall. Temperatures stay within a narrow band from -0.8°C (30.6°F) to 1.9°C (35.4°F), bringing a chill in the air. With a considerable increase in snowfall to 66mm (2.6"), December experiences a white Christmas annually. Even though the sun shines for only a few hours, the snow-blanketed landscape under the pale winter sun offers a mesmerising view.Temperature
With the commencement of December, Tønsberg records a moderate temperature decline, with the average high easing from November's 5.3°C (41.5°F) to a still cold 1.9°C (35.4°F). Night temperatures in December exhibit a subtle decrease, settling at an average of -0.8°C (30.6°F).Humidity
The average relative humidity in December in Tønsberg is 81%.Rainfall
In Tønsberg, Norway, during December, the rain falls for 9.3 days and regularly aggregates up to 40mm (1.57") of precipitation. In Tønsberg, during the entire year, the rain falls for 130.2 days and collects up to 549mm (21.61") of precipitation.Snowfall
January through April, October through December are months with snowfall. In Tønsberg, Norway, during December, snow falls for 6.1 days and regularly aggregates up to 66mm (2.6") of snow. Throughout the year, there are 37 snowfall days, and 389mm (15.31") of snow is accumulated.Sea temperature
In December, the average sea temperature in Tønsberg is 6.3°C (43.3°F).Note: Swimming in 6.3°C (43.3°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
With an average of 6h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:48 and sunset at 15:26. On the last day of December, sunrise is at 09:14 and sunset at 15:29 CET.
Sunshine
With an average of 3.4h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Tønsberg are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Tønsberg, Norway
- Average high temperature in December: 1.9°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in December: -0.8°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is February (-3°C).
Average pressure in December
Tønsberg, Norway
- Average pressure in December: 1008mbar
The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in December
Tønsberg, Norway
- Average wind speed in December: 19.7km/h
The windiest months (with the highest average wind speed) are November and December (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in December
Tønsberg, Norway
- Average humidity in December: 81%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in December
Tønsberg, Norway
- Average rainfall in December: 40mm
The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in December
Tønsberg, Norway
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Tønsberg, Norway
- Average snowfall in December: 66mm
The month with the highest snowfall is January (111mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Tønsberg, Norway
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in December
Tønsberg, Norway
- Average sea temperature in December: 6.3°C
The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).
Average daylight in December /
Average sunshine in December
Tønsberg, Norway
- Average daylight in December: 6h and 18min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Tønsberg, Norway
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is April (19.9 days).
The months with the least sunshine days are June and July (13.4 days).
Average UV index in December
Tønsberg, Norway
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Tønsberg, Norway
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 36).
Average visibility in December
Tønsberg, Norway
- 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).
