December weather forecastMoss, Norway
December
Weather in December
December signifies the advent of winter, with dropping temperatures, mounting snowfall, and increasing pressure. A high of 1°C (33.8°F) and a low of -2.4°C (27.7°F) set the stage for a white Christmas. The city transforms into a snowy landscape while homes radiate warmth and a festive spirit. The weather becomes ideal for sipping hot beverages, embellishing Christmas trees, and knitting warm mittens. As the year concludes, Moss, Norway wraps itself in a thick blanket of December's winter tranquility.Temperature
The beginning of December in Moss subtly marks a decrease in the average high-temperature, transitioning from 4.5°C (40.1°F) in November to a still cold 1°C (33.8°F). The nighttime temperature in December experiences a minor dip, averaging a subzero cold -2.4°C (27.7°F).Humidity
In December, the average relative humidity is 83%.Rainfall
In Moss, in December, it is raining for 8.1 days, with typically 30mm (1.18") of accumulated precipitation. In Moss, Norway, during the entire year, the rain falls for 117.6 days and collects up to 433mm (17.05") of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 6 days. Throughout December, 70mm (2.76") of snow is accumulated. In Moss, during the entire year, snow falls for 39.4 days and aggregates up to 397mm (15.63") of snow.Sea temperature
In December, the average sea temperature is 6.1°C (43°F).Note: Beware when you're in 6.1°C (43°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
The month with the shortest days is December, with an average of 6h and 12min of daylight.On the first day of the month, sunrise is at 08:48 and sunset at 15:24. On the last day of December, in Moss, sunrise is at 09:14 and sunset at 15:26 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.4h of sunshine.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Moss, Norway
- Average high temperature in December: 1°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is January (-0.4°C).
- Average low temperature in December: -2.4°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (-4.5°C).
Average pressure in December
Moss, 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
Moss, Norway
- Average wind speed in December: 16.4km/h
The windiest month (with the highest average wind speed) is December (16.4km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).
Average humidity in December
Moss, Norway
- Average humidity in December: 83%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (71%).
Average rainfall in December
Moss, Norway
- Average rainfall in December: 30mm
The wettest month (with the highest rainfall) is November (52mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Moss, Norway
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Moss, Norway
- Average snowfall in December: 70mm
The month with the highest snowfall is January (108mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Moss, Norway
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Moss, Norway
- Average sea temperature in December: 6.1°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
Moss, Norway
- Average daylight in December: 6h and 12min
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 12min).
- Average sunshine in December: 3h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Moss, Norway
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is April (20.2 days).
The month with the least sunshine days is November (14.5 days).
Average UV index in December
Moss, 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
Moss, Norway
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are June, July and August (Cloud cover 38).
Average visibility in December
Moss, Norway
- Average visibility in December: 9km
The months with the highest visibility are May and June (10km).
The months with the lowest visibility are January, February and March (8km).
