December weather forecast
Schengen, Luxembourg

December

Weather in December

December marks the apex of winter in Schengen, with the high temperature dropping to 4.8°C (40.6°F). Christmas festivities brighten up the short days and long nights. Streets sparkle with holiday decorations, and the city revels in a wintertime mood. Snowfall increases significantly compared to November, transforming Schengen into a winter wonderland. The sightseeing is made magical with a dusting of snow, making Schengen a quintessential winter town.

Temperature

In Schengen, the average high-temperature in December gently drops from a chilly 8.2°C (46.8°F) in November to an icy 4.8°C (40.6°F). During December, Schengen perceives a slight decrease in temperature from daytime highs, settling at an average low of 0.8°C (33.4°F).

Humidity

With an average relative humidity of 90%, December is the most humid month.

Rainfall

The month with the most rainfall is December, when the rain falls for 16.5 days and typically aggregates up to 71mm (2.8") of precipitation.

Snowfall

January through March, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 6.2 days and accumulates 55mm (2.17") of snow.

Daylight

December has the shortest days of the year in Schengen, with an average of 8h and 12min of daylight.
On the first day of December, sunrise is at 08:09 and sunset at 16:37. On the last day of the month, sunrise is at 08:30 and sunset at 16:44 CET.

Sunshine

With an average of 3.2h of sunshine, December has the least sunshine of the year in Schengen, Luxembourg.

UV index

The months with the lowest UV index in Schengen, Luxembourg, are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.

Frequently asked questions

How cold is December in Schengen?
The high-temperature during December is 4.8°C (40.6°F) and the low-temperature is 0.8°C (33.4°F).
What is the most humid month in Schengen?
December is the most humid month, with an average relative humidity of 90%.
What is the average humidity in December in Schengen?
In Schengen, Luxembourg, the average relative humidity in December is 90%.
What is the rainiest month in Schengen?
The month with the most rainfall in Schengen, Luxembourg, is December, when the rain falls for 16.5 days and typically aggregates up to 71mm (2.8") of precipitation.
How many days does it rain in December in Schengen?
In Schengen, during December, the rain falls for 16.5 days and regularly aggregates up to 71mm (2.8") of precipitation.
When does it snow the most in Schengen?
December is the month with the most snowfall in Schengen, Luxembourg. Snow falls for 6.2 days and accumulates 55mm (2.17") of snow.
How much does it snow in Schengen in December?
In Schengen, in December, snow falls for 6.2 days, with typically accumulated 55mm (2.17") of snow.
What is the month with the shortest days in Schengen?
December has the shortest days of the year in Schengen, with an average of 8h and 12min of daylight.
How many hours of daylight does Schengen have in December?
In Schengen, Luxembourg, the average day length in December is 8h and 15min.
When is the sunrise / sunset in December in Schengen?
In December, on the first day of the month, sunrise is at 08:09 and sunset at 16:37. On the last day of the month, sunrise is at 08:30 and sunset at 16:44 CET.
What is the month with the least sunshine in Schengen?
With an average of 3.2h of sunshine, December has the least sunshine of the year.
How long on average sun shines in December in Schengen?
In December, the average sunshine duration in Schengen is 3.2h.
When is the lowest UV index in Schengen?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Schengen.
What is the UV index intensity in December in Schengen?
In December, the average daily maximum UV index in Schengen is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Schengen, Luxembourg
  • Average high temperature in December: 4.8°C

The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (3.5°C).

  • Average low temperature in December: 0.8°C

The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-0.7°C).

Average pressure in December
Schengen, Luxembourg
  • Average pressure in December: 1018.6mbar

The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1014.2mbar).

Average wind speed in December
Schengen, Luxembourg
  • Average wind speed in December: 14.9km/h

The windiest month (with the highest average wind speed) is February (15.3km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).

Average humidity in December
Schengen, Luxembourg
  • Average humidity in December: 90%

The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (75%).

Average rainfall in December
Schengen, Luxembourg
  • Average rainfall in December: 71mm

The wettest month (with the highest rainfall) is December (71mm).
The driest month (with the least rainfall) is April (36mm).

Average rainfall days in December
Schengen, Luxembourg
  • Average rainfall days in December: 16.5 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is September (11.7 days).

Average snowfall in December
Schengen, Luxembourg
  • Average snowfall in December: 55mm

The month with the highest snowfall is December (55mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).

Average snowfall days in December
Schengen, Luxembourg
  • Average snowfall days in December: 6.2 days

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Schengen, Luxembourg
  • Average daylight in December: 8h and 1min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).

Average sunshine days in December
Schengen, Luxembourg
  • Average sunshine days in December: 8.4 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is December (8.4 days).

Average UV index in December
Schengen, Luxembourg
  • 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
Schengen, Luxembourg
  • Average cloud cover in December: 68

The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in December
Schengen, Luxembourg
  • Average visibility in December: 8km

The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, February, September, October, November and December (8km).

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