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
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a fresh 10°C (50°F) to a frosty 6.9°C (44.4°F). During the nights of December, Lannoy records an average low-temperature of 2.6°C (36.7°F), reflecting a modest decrease from daytime highs.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 87%.Rainfall
The month with the most rainfall is December, when the rain falls for 17.9 days and typically aggregates up to 63mm (2.48") of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Lannoy, in December, snow falls for 2.7 days, with typically accumulated 29mm (1.14") of snow. In Lannoy, during the entire year, snow falls for 12 days and aggregates up to 102mm (4.02") of snow.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 08:27 and sunset at 16:45. On the last day of the month, sunrise is at 08:48 and sunset at 16:52 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.8h of sunshine.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 low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly 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?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
How much does it snow in Lannoy in December?
What is the month with the shortest days?
How many hours of daylight does Lannoy have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index in Lannoy?
How high is the UV index in December?
Average temperature in December
Lannoy, Belgium
- Average high temperature in December: 6.9°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (5.6°C).
- Average low temperature in December: 2.6°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).
Average pressure in December
Lannoy, Belgium
- Average pressure in December: 1016.3mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in December
Lannoy, Belgium
- Average wind speed in December: 17.8km/h
The windiest month (with the highest average wind speed) is December (17.8km/h).
The calmest month (with the lowest average wind speed) is August (11.9km/h).
Average humidity in December
Lannoy, Belgium
- Average humidity in December: 87%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Lannoy, Belgium
- Average rainfall in December: 63mm
The wettest month (with the highest rainfall) is December (63mm).
The driest month (with the least rainfall) is September (20mm).
Average rainfall days in December
Lannoy, Belgium
- Average rainfall days in December: 17.9 days
The month with the highest number of rainy days is December (17.9 days).
The month with the least rainy days is September (10.3 days).
Average snowfall in December
Lannoy, Belgium
- Average snowfall in December: 29mm
The month with the highest snowfall is January (36mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Lannoy, Belgium
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is February (3.9 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
Lannoy, 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 5min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in December
Lannoy, Belgium
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is September (17.7 days).
The months with the least sunshine days are January, February and December (8.8 days).
Average UV index in December
Lannoy, 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
Lannoy, Belgium
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are April and August (Cloud cover 41).
Average visibility in December
Lannoy, Belgium
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
