Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
December's arrival comes with a mild decrease in the average high-temperature, moving subtly from 9.5°C (49.1°F) in November to a still frosty 6.2°C (43.2°F). During December, the nighttime temperatures align closely with the daytime averages, measuring an icy 2.2°C (36°F).Humidity
With an average relative humidity of 88%, December is the most humid month.Rainfall
The wettest months are June and December, with an average 56mm (2.2") of rainfall.Snowfall
January through March, November and December are months with snowfall. In Roosbeek, Belgium, during December, snow falls for 3.5 days and regularly aggregates up to 28mm (1.1") of snow. Throughout the year, there are 16.4 snowfall days, and 124mm (4.88") of snow is accumulated.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 08:21 and sunset at 16:38. On the last day of the month, sunrise is at 08:42 and sunset at 16:44 CET.
Sunshine
With an average of 3.6h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the most humid month in Roosbeek?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Roosbeek, Belgium
- Average high temperature in December: 6.2°C
The warmest months (with the highest average high temperature) are July and August (22.9°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in December: 2.2°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is February (0.7°C).
Average pressure in December
Roosbeek, Belgium
- Average pressure in December: 1016.5mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.7mbar).
Average wind speed in December
Roosbeek, Belgium
- Average wind speed in December: 18.2km/h
The windiest month (with the highest average wind speed) is December (18.2km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in December
Roosbeek, Belgium
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
Roosbeek, Belgium
- Average rainfall in December: 56mm
The wettest months (with the highest rainfall) are June and December (56mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in December
Roosbeek, Belgium
- Average rainfall days in December: 17.2 days
The months with the highest number of rainy days are May and June (19.1 days).
The month with the least rainy days is September (13.8 days).
Average snowfall in December
Roosbeek, Belgium
- Average snowfall in December: 28mm
The month with the highest snowfall is February (46mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Roosbeek, Belgium
- Average snowfall days in December: 3.5 days
The months with the highest number of snowfall days are January and February (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Roosbeek, Belgium
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in December
Roosbeek, Belgium
- Average sunshine days in December: 9.4 days
The month with the most sunshine days is September (13 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in December
Roosbeek, Belgium
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Roosbeek, Belgium
- Average cloud cover in December: 62
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in December
Roosbeek, Belgium
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is December (8km).
