December weather forecastPlestan, France

December

Weather in December

The first month of the winter, December, is still a chilly month in Plestan, France, with an average temperature varying between 5.6°C (42.1°F) and 9.4°C (48.9°F).

Temperature

In December, Plestan experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 11.8°C (53.2°F) in November to a chilly 9.4°C (48.9°F). An average low-temperature of 5.6°C (42.1°F) characterizes Plestan's December nights.

Humidity

The months with the highest humidity are January, November and December, with an average relative humidity of 85%.

Rainfall

In Plestan, in December, during 16.1 rainfall days, 44mm (1.73") of precipitation is typically accumulated. In Plestan, during the entire year, the rain falls for 175 days and collects up to 425mm (16.73") of precipitation.

Snowfall

January through April, November and December are months with snowfall. In December, in Plestan, it is snowing for 1 days. Throughout December, 12mm (0.47") of snow is accumulated. In Plestan, during the entire year, snow falls for 5.8 days and aggregates up to 35mm (1.38") of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 24min of daylight.
On the first day of the month, sunrise is at 08:40 and sunset at 17:17. On the last day of December, sunrise is at 09:01 and sunset at 17:24 CET.

Sunshine

The average sunshine in December in Plestan is 3.8h.

UV index

The months with the lowest UV index in Plestan are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.

Frequently asked questions

In December, in Plestan, the average high-temperature is 9.4°C (48.9°F), and the average low-temperature is 5.6°C (42.1°F).

The months with the highest humidity are January, November and December, with an average relative humidity of 85%.

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

In Plestan, in December, during 16.1 rainfall days, 44mm (1.73") of precipitation is typically accumulated.

In Plestan, during December, snow falls for 1 days and regularly aggregates up to 12mm (0.47") of snow.

With an average of 8h and 24min of daylight, December has the shortest days of the year in Plestan.

In Plestan, the average day length in December is 8h and 24min.

On the first day of December in Plestan, France, sunrise is at 08:40 and sunset at 17:17. On the last day of the month, sunrise is at 09:01 and sunset at 17:24 CET.

In December, the average sunshine duration is 3.8h.

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

The average daily maximum UV index in December in Plestan, France, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from 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
Plestan, France

  • Average high temperature in December: 9.4°C

The warmest month (with the highest average high temperature) is August (20.6°C).
The month with the lowest average high temperature is January (8.5°C).

  • Average low temperature in December: 5.6°C

The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).

Average pressure in December
Plestan, France

  • Average pressure in December: 1017.7mbar

The month with the highest atmospheric pressure is September (1018.3mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).

Average wind speed in December
Plestan, France

  • Average wind speed in December: 21.2km/h

The windiest month (with the highest average wind speed) is February (21.3km/h).
The calmest month (with the lowest average wind speed) is August (13.8km/h).

Average humidity in December
Plestan, France

  • Average humidity in December: 85%

The months with the highest relative humidity are January, November and December (85%).
The month with the lowest relative humidity is September (81%).

Average rainfall in December
Plestan, France

  • Average rainfall in December: 44mm

The wettest month (with the highest rainfall) is November (50mm).
The driest month (with the least rainfall) is September (18mm).

Average rainfall days in December
Plestan, France

  • Average rainfall days in December: 16.1 days

The month with the highest number of rainy days is November (17.4 days).
The month with the least rainy days is September (11 days).

Average snowfall in December
Plestan, France

  • Average snowfall in December: 12mm

The month with the highest snowfall is February (13mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December
Plestan, France

  • Average snowfall days in December: 1 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

  • Average daylight in December: 8h and 24min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 3h and 48min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Plestan, France

  • Average sunshine days in December: 11.2 days

The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is November (8.3 days).

Average UV index in December
Plestan, France

  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Plestan, France

  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 42).

Average visibility in December
Plestan, 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).