December weather forecastSiest, France
December
Weather in December
December, the first month of the winter in Siest, is still a cool month, with an average temperature ranging between min 5.8°C (42.4°F) and max 11.8°C (53.2°F).Temperature
December's arrival brings an average high-temperature of a cool 11.8°C (53.2°F), slightly deviating from November's 14.6°C (58.3°F). Siest usually reports an average low-temperature of 5.8°C (42.4°F) during the month of December.Humidity
In December, the average relative humidity in Siest is 81%.Rainfall
In Siest, in December, it is raining for 13.9 days, with typically 46mm (1.81") of accumulated precipitation. In Siest, during the entire year, the rain falls for 182.1 days and collects up to 634mm (24.96") of precipitation.Snowfall
February, March and December are months with snowfall in Siest. December is the first month it typically snows in Siest. Throughout December, in the average 0.2 snowfall days, it receives 1mm (0.04") of snow. In Siest, during the entire year, snow falls for 1.9 days and aggregates up to 7mm (0.28") of snow.Daylight
December has the shortest days of the year in Siest, with an average of 9h and 0min of daylight.On the first day of December in Siest, sunrise is at 08:18 and sunset at 17:28. On the last day of the month, sunrise is at 08:37 and sunset at 17:37 CET.
Sunshine
The average sunshine in December is 5.4h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 3 in December interprets into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Siest, France
- Average high temperature in December: 11.8°C
The warmest month (with the highest average high temperature) is August (27.2°C).
The month with the lowest average high temperature is January (10.7°C).
- Average low temperature in December: 5.8°C
The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in December
Siest, France
- Average pressure in December: 1021.6mbar
The month with the highest atmospheric pressure is December (1021.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in December
Siest, France
- Average wind speed in December: 9.4km/h
The windiest months (with the highest average wind speed) are January and February (9.7km/h).
The calmest month (with the lowest average wind speed) is September (7.5km/h).
Average humidity in December
Siest, France
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in December
Siest, France
- Average rainfall in December: 46mm
The wettest month (with the highest rainfall) is November (90mm).
The driest month (with the least rainfall) is August (31mm).
Average rainfall days in December
Siest, France
- Average rainfall days in December: 13.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is September (12.3 days).
Average snowfall in December
Siest, France
- Average snowfall in December: 1mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Siest, France
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Siest, France
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 5h and 6min).
Average sunshine days in December
Siest, France
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is October (16.8 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in December
Siest, France
- Average UV index in December: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in December
Siest, France
- Average cloud cover in December: 44
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in December
Siest, 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).
