December weather forecastBostens, France

December

Weather in December

December, the first month of the winter in Bostens, is also a fresh month, with an average temperature varying between 10.6°C (51.1°F) and 4.6°C (40.3°F).

Temperature

The start of December comes with a small reduction in the average high-temperature, subtly receding from a moderate 13.9°C (57°F) in November to a cool 10.6°C (51.1°F). In December, Bostens experiences a temperature dip to an average of 4.6°C (40.3°F) at night.

Humidity

In Bostens, the average relative humidity in December is 85%.

Rainfall

In Bostens, in December, during 14 rainfall days, 38mm (1.5") of precipitation is typically accumulated. Throughout the year, there are 177.5 rainfall days, and 528mm (20.79") of precipitation is accumulated.

Snowfall

Months with snowfall in Bostens are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow. In Bostens, during the entire year, snow falls for 2.4 days and aggregates up to 11mm (0.43") of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 08:16 and sunset at 17:24. On the last day of the month, sunrise is at 08:35 and sunset at 17:33 CET.

Sunshine

The average sunshine in December is 5.1h.

UV index

The average daily maximum UV index in December in Bostens is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 3 during December translates into the following guidance:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

December temperatures vary between a high-temperature of 10.6°C (51.1°F) and a low-temperature of 4.6°C (40.3°F). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 32°C (89.6°F).

In Bostens, France, the average relative humidity in December is 85%.

In Bostens, France, in December, it is raining for 14 days, with typically 38mm (1.5") of accumulated precipitation.

December is the first month it typically snows in Bostens. Throughout December, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow.

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

The average day length in December in Bostens is 8h and 58min.

In December, on the first day of the month, sunrise is at 08:16 and sunset at 17:24. On the last day of the month, in Bostens, France, sunrise is at 08:35 and sunset at 17:33 CET.

The average sunshine duration in December is 5.1h.

The average daily maximum UV index in December in Bostens, France, is 3. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
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
Bostens, France

  • Average high temperature in December: 10.6°C

The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (9.8°C).

  • Average low temperature in December: 4.6°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).

Average pressure in December
Bostens, France

  • Average pressure in December: 1021.6mbar

The month with the highest atmospheric pressure is December (1021.6mbar).
The months with the lowest atmospheric pressure are April and November (1015.6mbar).

Average wind speed in December
Bostens, France

  • Average wind speed in December: 7.7km/h

The windiest month (with the highest average wind speed) is March (8.5km/h).
The calmest month (with the lowest average wind speed) is September (6.6km/h).

Average humidity in December
Bostens, France

  • Average humidity in December: 85%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (70%).

Average rainfall in December
Bostens, France

  • Average rainfall in December: 38mm

The wettest month (with the highest rainfall) is November (71mm).
The driest month (with the least rainfall) is August (28mm).

Average rainfall days in December
Bostens, France

  • Average rainfall days in December: 14 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is October (11.5 days).

Average snowfall in December
Bostens, France

  • Average snowfall in December: 3mm

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
Bostens, France

  • Average snowfall days in December: 0.5 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 daylight in December /
Average sunshine in December
Bostens, 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 6min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are January and November (Average sunshine: 5h and 0min).

Average sunshine days in December
Bostens, France

  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is May (10.5 days).

Average UV index in December
Bostens, France

  • Average UV index in December: 3

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

Average cloud cover in December
Bostens, France

  • Average cloud cover in December: 49

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in December
Bostens, France

  • Average visibility in December: 8km

The months with the highest visibility are May and June (9km).
The month with the lowest visibility is January (7km).