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
The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a fresh 10°C (50°F) in November to a chilly 6.9°C (44.4°F). A consistent average low of 2.7°C (36.9°F) is noted in Calonne-sur-la-Lys throughout December, only a small step down from its daytime high.Humidity
December is the most humid month in Calonne-sur-la-Lys, with an average relative humidity of 88%.Rainfall
The month with the most rainfall in Calonne-sur-la-Lys is December, when the rain falls for 15.6 days and typically aggregates up to 49mm (1.93") of precipitation.Snowfall
Months with snowfall in Calonne-sur-la-Lys are January through March, November and December. In Calonne-sur-la-Lys, in December, during 2.4 snowfall days, 19mm (0.75") of snow is typically accumulated. Throughout the year, in Calonne-sur-la-Lys, there are 10.2 snowfall days, and 79mm (3.11") of snow is accumulated.Daylight
December has the shortest days of the year in Calonne-sur-la-Lys, with an average of 8h and 6min of daylight.On the first day of the month, sunrise is at 08:29 and sunset at 16:47. On the last day of December, sunrise is at 08:50 and sunset at 16:54 CET.
Sunshine
The average sunshine in December in Calonne-sur-la-Lys is 4.1h.UV index
January, February, 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 health risk 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 sun exposure should always be prevented in babies, children, and those with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Calonne-sur-la-Lys?
What is the most humid month in Calonne-sur-la-Lys?
What is the average humidity in December in Calonne-sur-la-Lys?
What is the wettest month in Calonne-sur-la-Lys?
How much does it rain in Calonne-sur-la-Lys in December?
How much does it snow in Calonne-sur-la-Lys in December?
What is the month with the shortest days in Calonne-sur-la-Lys?
How many hours of daylight does Calonne-sur-la-Lys have in December?
When is the sunrise / sunset in December in Calonne-sur-la-Lys?
How long on average sun shines in December in Calonne-sur-la-Lys?
When is the lowest UV index in Calonne-sur-la-Lys?
How high is the UV index in December in Calonne-sur-la-Lys?
Average temperature in December
Calonne-sur-la-Lys, France
- Average high temperature in December: 6.9°C
The warmest months (with the highest average high temperature) are July and August (22.8°C).
The month with the lowest average high temperature is January (5.7°C).
- Average low temperature in December: 2.7°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
Calonne-sur-la-Lys, France
- Average pressure in December: 1016.4mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in December
Calonne-sur-la-Lys, France
- Average wind speed in December: 18.2km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is August (12.5km/h).
Average humidity in December
Calonne-sur-la-Lys, France
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Calonne-sur-la-Lys, France
- Average rainfall in December: 49mm
The wettest month (with the highest rainfall) is December (49mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in December
Calonne-sur-la-Lys, France
- Average rainfall days in December: 15.6 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is September (10.4 days).
Average snowfall in December
Calonne-sur-la-Lys, France
- Average snowfall in December: 19mm
The month with the highest snowfall is January (30mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Calonne-sur-la-Lys, France
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (3.2 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
Calonne-sur-la-Lys, France
- 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: 4h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Calonne-sur-la-Lys, France
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is January (11.3 days).
Average UV index in December
Calonne-sur-la-Lys, France
- 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
Calonne-sur-la-Lys, France
- Average cloud cover in December: 59
The months with the most cloud cover are January and November (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in December
Calonne-sur-la-Lys, France
- 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).
