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
Start of December brings a slight shift in the average high-temperature, dipping a bit from November's chilly 9.1°C (48.4°F) to an icy 5.6°C (42.1°F). The month of December is marked by an average minimum temperature of 1.4°C (34.5°F), slightly cooler than its daytime counterpart.Humidity
With an average relative humidity of 89%, December is the most humid month.Rainfall
December is the month with the most rainfall. Rain falls for 17.3 days and accumulates 58mm (2.28") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 3.9 days. Throughout December, 30mm (1.18") of snow is accumulated. Throughout the year, there are 18.2 snowfall days, and 135mm (5.31") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 6min of daylight.On the first day of December, sunrise is at 08:17 and sunset at 16:36. On the last day of the month, sunrise is at 08:38 and sunset at 16:43 CET.
Sunshine
December has the least sunshine of the year, with an average of 3.6h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the most humid month?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Sart-Tilman have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Sart-Tilman have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Sart-Tilman, Belgium
- Average high temperature in December: 5.6°C
The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in December: 1.4°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).
Average pressure in December
Sart-Tilman, Belgium
- Average pressure in December: 1016.9mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1013.1mbar).
Average wind speed in December
Sart-Tilman, Belgium
- Average wind speed in December: 17km/h
The windiest month (with the highest average wind speed) is December (17km/h).
The calmest month (with the lowest average wind speed) is August (10.5km/h).
Average humidity in December
Sart-Tilman, Belgium
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are April and August (77%).
Average rainfall in December
Sart-Tilman, Belgium
- Average rainfall in December: 58mm
The wettest month (with the highest rainfall) is December (58mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in December
Sart-Tilman, Belgium
- Average rainfall days in December: 17.3 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (12.7 days).
Average snowfall in December
Sart-Tilman, Belgium
- Average snowfall in December: 30mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sart-Tilman, Belgium
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (5.8 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
Sart-Tilman, Belgium
- Average daylight in December: 8h and 1min
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 6min).
- Average sunshine in December: 3h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in December
Sart-Tilman, Belgium
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is October (14.7 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in December
Sart-Tilman, Belgium
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sart-Tilman, Belgium
- Average cloud cover in December: 63
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in December
Sart-Tilman, Belgium
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, February, September, October, November and December (8km).
