December weather forecastCostaros, France
December
Weather in December
The first month of the winter, December, is still a cold month in Costaros, France, with an average temperature fluctuating between -1.2°C (29.8°F) and 5.2°C (41.4°F).Temperature
The start of December signals a gentle decrease in the average high-temperature, transitioning from a frosty 8.3°C (46.9°F) in November to a cold 5.2°C (41.4°F). Throughout December, Costaros records an average temperature of -1.2°C (29.8°F) at night.Humidity
January, November and December, with an average relative humidity of 87%, are the most humid months.Rainfall
In Costaros, in December, during 12.1 rainfall days, 37mm (1.46") of precipitation is typically accumulated. Throughout the year, there are 157.7 rainfall days, and 526mm (20.71") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Costaros, in December, during 8.9 snowfall days, 82mm (3.23") of snow is typically accumulated. In Costaros, during the entire year, snow falls for 56.7 days and aggregates up to 651mm (25.63") of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:02 and sunset at 17:04. On the last day of December, in Costaros, sunrise is at 08:22 and sunset at 17:13 CET.
Sunshine
In December, the average sunshine in Costaros is 4.9h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Costaros, France
- Average high temperature in December: 5.2°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 (3.4°C).
- Average low temperature in December: -1.2°C
The month with the highest average low temperature is August (10.7°C).
The coldest month (with the lowest average low temperature) is February (-3°C).
Average pressure in December
Costaros, France
- Average pressure in December: 1021.3mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in December
Costaros, France
- Average wind speed in December: 11.8km/h
The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity in December
Costaros, France
- Average humidity in December: 87%
The months with the highest relative humidity are January, November and December (87%).
The month with the lowest relative humidity is August (72%).
Average rainfall in December
Costaros, France
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is November (64mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in December
Costaros, France
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in December
Costaros, France
- Average snowfall in December: 82mm
The month with the highest snowfall is February (137mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Costaros, France
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Costaros, France
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Costaros, France
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is October (15.4 days).
The month with the least sunshine days is May (8.5 days).
Average UV index in December
Costaros, France
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Costaros, France
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Costaros, France
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and December (8km).
The months with the lowest visibility are January and November (7km).
