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
Weather in December
Temperature
The average high-temperature slightly decreases in December, shifting from a fresh 10.3°C (50.5°F) in November to a chilly 7°C (44.6°F). December's average low-temperature in Roissy-en-France is an icy 2.8°C (37°F), reflecting a minor difference from the day's peak temperatures.Humidity
The months with the highest humidity in Roissy-en-France are January and December, with an average relative humidity of 86%.Rainfall
The month with the most rainfall in Roissy-en-France is December, when the rain falls for 16 days and typically aggregates up to 57mm (2.24") of precipitation.Snowfall
Months with snowfall are January through March, November and December. In December, it is snowing for 1.8 days. Throughout December, 15mm (0.59") of snow is accumulated. Throughout the year, there are 9 snowfall days, and 85mm (3.35") of snow is accumulated.Daylight
With an average of 8h and 18min of daylight, December has the shortest days of the year in Roissy-en-France.On the first day of December, sunrise is at 08:23 and sunset at 16:55. On the last day of the month, sunrise is at 08:43 and sunset at 17:02 CET.
Sunshine
In Roissy-en-France, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index in Roissy-en-France, France, are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
How cold does it get in Roissy-en-France in December?
What are the most humid months in Roissy-en-France?
What is the average humidity in December in Roissy-en-France?
What is the rainiest month in Roissy-en-France?
How many days does it rain in December in Roissy-en-France?
How much does it snow in Roissy-en-France in December?
What is the month with the shortest days in Roissy-en-France?
What is the average length of the day in December in Roissy-en-France?
When is the sunrise / sunset in December in Roissy-en-France?
How many hours of sunshine does Roissy-en-France have in December?
When is the lowest UV index in Roissy-en-France?
What is the UV index intensity in December in Roissy-en-France?
Average temperature in December
Roissy-en-France, France
- Average high temperature in December: 7°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in December: 2.8°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in December
Roissy-en-France, France
- Average pressure in December: 1018.1mbar
The month with the highest atmospheric pressure is December (1018.1mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in December
Roissy-en-France, France
- Average wind speed in December: 15.2km/h
The windiest month (with the highest average wind speed) is February (15.6km/h).
The calmest month (with the lowest average wind speed) is August (10.1km/h).
Average humidity in December
Roissy-en-France, France
- Average humidity in December: 86%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in December
Roissy-en-France, France
- Average rainfall in December: 57mm
The wettest month (with the highest rainfall) is December (57mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in December
Roissy-en-France, France
- Average rainfall days in December: 16 days
The month with the highest number of rainy days is December (16 days).
The month with the least rainy days is September (8.4 days).
Average snowfall in December
Roissy-en-France, France
- Average snowfall in December: 15mm
The month with the highest snowfall is January (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Roissy-en-France, France
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Roissy-en-France, France
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Roissy-en-France, France
- Average sunshine days in December: 12 days
The month with the most sunshine days is September (20.1 days).
The month with the least sunshine days is February (10.5 days).
Average UV index in December
Roissy-en-France, France
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Roissy-en-France, France
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 39).
Average visibility in December
Roissy-en-France, France
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and December (9km).
The months with the lowest visibility are January and November (8km).
Roissy-en-France, France
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