December weather forecastCastin, France

December

Weather in December

The first month of the winter, December, is still a cool month in Castin, France, with an average temperature ranging between min 4.4°C (39.9°F) and max 10.2°C (50.4°F).

Temperature

The arrival of December correlates with a minor temperature reduction, down from November's refreshing 13.3°C (55.9°F) to a cool 10.2°C (50.4°F). Throughout the month of December, Castin witnesses an average temperature of 4.4°C (39.9°F).

Humidity

In December, the average relative humidity in Castin, France, is 82%.

Rainfall

In Castin, in December, during 11 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In Castin, during the entire year, the rain falls for 155.2 days and collects up to 440mm (17.32") of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Castin, during December, snow falls for 0.8 days and regularly aggregates up to 3mm (0.12") of snow. Throughout the year, there are 4.7 snowfall days, and 39mm (1.54") of snow is accumulated.

Daylight

With an average of 9h and 0min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 08:11 and sunset at 17:22. On the last day of December, sunrise is at 08:31 and sunset at 17:30 CET.

Sunshine

In Castin, the average sunshine in December is 5.4h.

UV index

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Boost your sun resistance with garments that are densely woven yet spacious. Take note! UV radiation from the Sun can double in intensity due to snow reflection.

Frequently asked questions

In December, in Castin, the average high-temperature is 10.2°C (50.4°F), and the average low-temperature is 4.4°C (39.9°F). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 30°C (86°F).

In Castin, the average relative humidity in December is 82%.

In Castin, in December, during 11 rainfall days, 31mm (1.22") of precipitation is typically accumulated.

In December, it is snowing for 0.8 days. Throughout December, 3mm (0.12") of snow is accumulated.

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

The average day length in December is 8h and 59min.

In December, on the first day of the month, sunrise is at 08:11 and sunset at 17:22. On the last day of the month, sunrise is at 08:31 and sunset at 17:30 CET.

In December, the average sunshine duration is 5.4h.

In Castin, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Castin, France

  • Average high temperature in December: 10.2°C

The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (9°C).

  • Average low temperature in December: 4.4°C

The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (2.8°C).

Average pressure in December
Castin, France

  • Average pressure in December: 1021.7mbar

The month with the highest atmospheric pressure is December (1021.7mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

Average wind speed in December
Castin, France

  • Average wind speed in December: 11.2km/h

The windiest month (with the highest average wind speed) is February (12.3km/h).
The calmest month (with the lowest average wind speed) is September (8.7km/h).

Average humidity in December
Castin, France

  • Average humidity in December: 82%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (67%).

Average rainfall in December
Castin, France

  • Average rainfall in December: 31mm

The wettest month (with the highest rainfall) is May (52mm).
The driest month (with the least rainfall) is September (22mm).

Average rainfall days in December
Castin, France

  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is September (9.9 days).

Average snowfall in December
Castin, France

  • Average snowfall in December: 3mm

The month with the highest snowfall is February (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Castin, France

  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Castin, 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: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in December
Castin, France

  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is April (12.7 days).

Average UV index in December
Castin, France

  • Average UV index in December: 3

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and November (UV index 2).

Average cloud cover in December
Castin, France

  • Average cloud cover in December: 43

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in December
Castin, 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).