December weather forecastCassis, France

December

Weather in December

December, the first month of the winter in Cassis, is still a cool month, with an average temperature ranging between max 12.1°C (53.8°F) and min 8.5°C (47.3°F).

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.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During December, Cassis experiences an average high-temperature of 12.1°C (53.8°F) and a low-temperature of 8.5°C (47.3°F).

The months with the highest humidity are November and December, with an average relative humidity of 74%.

The average relative humidity in December in Cassis, France, is 74%.

In December, in Cassis, the rain falls for 10.9 days. Throughout December, 40mm (1.57") of precipitation is accumulated.

December is the first month it typically snows in Cassis. Throughout December, in the average 0.3 snowfall days, it receives 1mm (0.04") of snow.

In Cassis, France, the average seawater temperature in December is 15°C (59°F). For most, swimming in 15°C (59°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

December has the shortest days of the year in Cassis, France, with an average of 9h and 0min of daylight.

In Cassis, the average day length in December is 9h and 3min.

On the first day of December in Cassis, France, sunrise is at 07:50 and sunset at 17:03. On the last day of the month, sunrise is at 08:09 and sunset at 17:12 CET.

In Cassis, France, the average sunshine duration in December is 6.3h.

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Cassis, France.

In December, the average daily maximum UV index in Cassis, France, is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

14.7°C

12.1°C

10.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

23.7km/h

24km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.3

0.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

15.4

17.3

17.6

Average UV index

Average cloud cover

Average visibility

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 18min

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).