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 sea temperature 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 commences with an average high-temperature of a cool 12.1°C (53.8°F), showing little deviation from November's 14.7°C (58.5°F). December registers an average low temperature of 8.5°C (47.3°F) in Cassis, subtly lower than the daytime maximum.Humidity
The months with the highest humidity in Cassis are November and December, with an average relative humidity of 74%.Rainfall
In Cassis, in December, during 10.9 rainfall days, 40mm (1.57") of precipitation is typically accumulated. In Cassis, during the entire year, the rain falls for 110.7 days and collects up to 468mm (18.43") of precipitation.Snowfall
January through March and December are months with snowfall in Cassis. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Cassis, there are 1.8 snowfall days, and 8mm (0.31") of snow is accumulated.Sea temperature
In Cassis, in December, the average water temperature is 15°C (59°F).Note: Most people find it challenging to enjoy swimming in water that is 15°C (59°F). As water temperature falls below 21°C (69.8°F), controlling breathing grows increasingly difficult.
Daylight
December has the shortest days of the year in Cassis, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 07:50 and sunset at 17:03. On the last day of December, in Cassis, France, sunrise is at 08:09 and sunset at 17:12 CET.
Sunshine
In December, the average sunshine in Cassis is 6.3h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Cassis, France. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 3 in December leads to these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the average December temperature in Cassis?
What are the most humid months in Cassis?
What is the average humidity in December in Cassis?
How many days does it rain in December in Cassis?
When does it start to snow in Cassis?
How cold is the water in December in Cassis?
What is the month with the shortest days in Cassis?
What is the average length of the day in December in Cassis?
When is the sunrise / sunset in December in Cassis?
How many hours of sunshine does Cassis have in December?
What are the months with the lowest UV index in Cassis?
How high is the UV index in December in Cassis?
Average temperature in December
Cassis, France
- Average high temperature in December: 12.1°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in December: 8.5°C
The month with the highest average low temperature is August (21.3°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in December
Cassis, France
- Average pressure in December: 1019.1mbar
The month with the highest atmospheric pressure is December (1019.1mbar).
The month with the lowest atmospheric pressure is November (1014.1mbar).
Average wind speed in December
Cassis, France
- Average wind speed in December: 21.9km/h
The windiest months (with the highest average wind speed) are January and February (22.6km/h).
The calmest month (with the lowest average wind speed) is August (15.4km/h).
Average humidity in December
Cassis, France
- Average humidity in December: 74%
The months with the highest relative humidity are November and December (74%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Cassis, France
- Average rainfall in December: 40mm
The wettest month (with the highest rainfall) is November (88mm).
The driest month (with the least rainfall) is July (12mm).
Average rainfall days in December
Cassis, France
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is November (13 days).
The month with the least rainy days is July (5.2 days).
Average snowfall in December
Cassis, France
- Average snowfall in December: 1mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Cassis, France
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Cassis, France
- Average sea temperature in December: 15°C
The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in December /
Average sunshine in December
Cassis, France
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in December
Cassis, France
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is November (15.4 days).
Average UV index in December
Cassis, France
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Cassis, France
- Average cloud cover in December: 31
The months with the most cloud cover are January and November (Cloud cover 34).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Cassis, France
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Cassis, France
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