December weather forecastSemilly, France
December
Weather in December
December, the first month of the winter in Semilly, is still a cold month, with an average temperature varying between 1.1°C (34°F) and 5.5°C (41.9°F).Temperature
December's onset brings a negligible change in high-temperatures, falling from a chilly 8.8°C (47.8°F) in November to a cold 5.5°C (41.9°F). Semilly's nights throughout December are marked by an average low temperature of 1.1°C (34°F), a minor drop from the day's high.Humidity
The months with the highest humidity in Semilly are January and December, with an average relative humidity of 89%.Rainfall
December is the month with the most rainfall in Semilly. Rain falls for 14.6 days and accumulates 70mm (2.76") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Semilly, during December, snow falls for 4.9 days and regularly aggregates up to 42mm (1.65") of snow. Throughout the year, in Semilly, there are 20.5 snowfall days, and 164mm (6.46") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 08:08 and sunset at 16:46. On the last day of December, sunrise is at 08:28 and sunset at 16:53 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.5h of sunshine.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 unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Semilly, France
- Average high temperature in December: 5.5°C
The warmest month (with the highest average high temperature) is August (23.6°C).
The month with the lowest average high temperature is January (4.2°C).
- Average low temperature in December: 1.1°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is January (-0.4°C).
Average pressure in December
Semilly, France
- Average pressure in December: 1019.7mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is November (1014.8mbar).
Average wind speed in December
Semilly, France
- Average wind speed in December: 15.3km/h
The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).
Average humidity in December
Semilly, France
- Average humidity in December: 89%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Semilly, France
- Average rainfall in December: 70mm
The wettest month (with the highest rainfall) is December (70mm).
The driest month (with the least rainfall) is September (38mm).
Average rainfall days in December
Semilly, France
- Average rainfall days in December: 14.6 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is September (11.7 days).
Average snowfall in December
Semilly, France
- Average snowfall in December: 42mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Semilly, France
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (6.1 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
Semilly, France
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 30min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in December
Semilly, France
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
Semilly, 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
Semilly, France
- Average cloud cover in December: 65
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Semilly, France
- Average visibility in December: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
