December weather forecastChallans, France

December

Weather in December

December, the first month of the winter in Challans, is also a fresh month, with temperature in the range of an average low of 7.9°C (46.2°F) and an average high of 11.1°C (52°F).

Temperature

December's arrival registers an average high-temperature of a fresh 11.1°C (52°F), closely aligning with the temperature of the previous month. Challans sees a minor drop to an average minimum temperature of 7.9°C (46.2°F) during the night in the month of December.

Humidity

The months with the highest humidity are January and December, with an average relative humidity of 81%.

Rainfall

In Challans, in December, during 17 rainfall days, 74mm (2.91") of precipitation is typically accumulated. In Challans, during the entire year, the rain falls for 176.3 days and collects up to 575mm (22.64") of precipitation.

Snowfall

The only month with snowfall in Challans is December. The month with the most snowfall in Challans is December, when snow falls for 0.2 days and typically aggregates up to 1mm (0.04") of snow.

Daylight

The month with the shortest days in Challans is December, with an average of 8h and 36min of daylight.
On the first day of December in Challans, sunrise is at 08:32 and sunset at 17:21. On the last day of the month, sunrise is at 08:52 and sunset at 17:28 CET.

Sunshine

January and December, with an average of 4.6h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index in Challans are January through April, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 3 during December translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Challans, is 11.1°C (52°F), while the low-temperature averages to 7.9°C (46.2°F).

January and December, with an average relative humidity of 81%, are most humid months in Challans.

The average relative humidity in December in Challans, France, is 81%.

In Challans, in December, it is raining for 17 days, with typically 74mm (2.91") of accumulated precipitation.

December is the month with the most snowfall in Challans. Snow falls for 0.2 days and accumulates 1mm (0.04") of snow.

December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 1mm (0.04") of snow.

December has the shortest days of the year in Challans, with an average of 8h and 36min of daylight.

The average day length in December is 8h and 37min.

In December, on the first day of the month, sunrise is at 08:32 and sunset at 17:21. On the last day of the month, in Challans, France, sunrise is at 08:52 and sunset at 17:28 CET.

January and December, with an average of 4.6h of sunshine, are months with the least sunshine in Challans.

In Challans, France, the average sunshine duration in December is 4.6h.

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

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health risk from 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

13.5°C

11.1°C

9.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

25.3km/h

25.7km/h

24.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

9.8

11.1

9.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Challans, France

Average high temperature in December: 11.1°C

The warmest month (with the highest average high temperature) is July (22.2°C).
The months with the lowest average high temperature are January and February (9.9°C).

Average low temperature in December: 7.9°C

The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).

Average pressure in December
Challans, France

Average pressure in December: 1019.6mbar

The month with the highest atmospheric pressure is December (1019.6mbar).
The month with the lowest atmospheric pressure is November (1013.8mbar).

Average wind speed in December
Challans, France

Average wind speed in December: 24.2km/h

The windiest month (with the highest average wind speed) is December (24.2km/h).
The calmest month (with the lowest average wind speed) is August (15.8km/h).

Average humidity in December
Challans, France

Average humidity in December: 81%

The months with the highest relative humidity are January and December (81%).
The month with the lowest relative humidity is September (73%).

Average rainfall in December
Challans, France

Average rainfall in December: 74mm

The wettest month (with the highest rainfall) is November (83mm).
The driest month (with the least rainfall) is September (29mm).

Average rainfall days in December
Challans, France

Average rainfall days in December: 17 days

The month with the highest number of rainy days is January (19.3 days).
The month with the least rainy days is September (10.4 days).

Average snowfall in December
Challans, France

Average snowfall in December: 1mm

The month with the highest snowfall is December (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in December
Challans, France

Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Challans, France

Average daylight in December: 8h and 36min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

Average sunshine in December: 4h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).

Average sunshine days in December
Challans, France

Average sunshine days in December: 11.1 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is January (9.2 days).

Average UV index in December
Challans, France

Average UV index in December: 3

The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).

Average cloud cover in December
Challans, France

Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).

Average visibility in December
Challans, France

Average visibility in December: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).