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
December's onset brings a negligible change in high-temperatures, falling from a cool 10°C (50°F) in November to a chilly 6.7°C (44.1°F). Throughout December, Bailly-Romainvilliers observes a steady low-temperature average of 2.5°C (36.5°F), reflecting a minor dip from daytime highs.Humidity
The most humid month is December, with an average relative humidity of 88%.Rainfall
December is the month with the most rainfall in Bailly-Romainvilliers. Rain falls for 17.8 days and accumulates 65mm (2.56") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Bailly-Romainvilliers, in December, during 2.6 snowfall days, 20mm (0.79") of snow is typically accumulated. In Bailly-Romainvilliers, during the entire year, snow falls for 11.1 days and aggregates up to 84mm (3.31") of snow.Daylight
December has the shortest days of the year in Bailly-Romainvilliers, with an average of 8h and 18min of daylight.On the first day of the month, sunrise is at 08:21 and sunset at 16:54. On the last day of December, sunrise is at 08:41 and sunset at 17:01 CET.
Sunshine
In December, the average sunshine is 4h.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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
How cold is it in Bailly-Romainvilliers in December?
What is the most humid month in Bailly-Romainvilliers?
What is the average humidity in December in Bailly-Romainvilliers?
What is the rainiest month in Bailly-Romainvilliers?
How much does it rain in Bailly-Romainvilliers in December?
How much does it snow in Bailly-Romainvilliers in December?
What is the month with the shortest days in Bailly-Romainvilliers?
What is the average length of the day in December in Bailly-Romainvilliers?
What time are sunrise and sunset in December in Bailly-Romainvilliers?
How many hours of sunshine does Bailly-Romainvilliers have in December?
What is the month with the lowest UV index in Bailly-Romainvilliers?
How high is the UV index in December in Bailly-Romainvilliers?
Average temperature in December
Bailly-Romainvilliers, France
- Average high temperature in December: 6.7°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: 2.5°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (1.2°C).
Average pressure in December
Bailly-Romainvilliers, France
- Average pressure in December: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in December
Bailly-Romainvilliers, France
- Average wind speed in December: 15.6km/h
The windiest month (with the highest average wind speed) is February (15.9km/h).
The calmest month (with the lowest average wind speed) is August (10.1km/h).
Average humidity in December
Bailly-Romainvilliers, 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 (71%).
Average rainfall in December
Bailly-Romainvilliers, France
- Average rainfall in December: 65mm
The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in December
Bailly-Romainvilliers, France
- Average rainfall days in December: 17.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is September (12.5 days).
Average snowfall in December
Bailly-Romainvilliers, France
- Average snowfall in December: 20mm
The month with the highest snowfall is January (33mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Bailly-Romainvilliers, France
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is January (3.4 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
Bailly-Romainvilliers, 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 0min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Bailly-Romainvilliers, France
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is September (14.7 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in December
Bailly-Romainvilliers, 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
Bailly-Romainvilliers, France
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in December
Bailly-Romainvilliers, France
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, November and December (8km).
Bailly-Romainvilliers, France
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