December weather forecast and climate
Luxembourg City, Luxembourg

A scenic morning panorama of the rocky city of Luxembourg, in Luxembourg with a partly clear sky
A scenic morning panorama of the rocky city of Luxembourg, in Luxembourg with a partly clear sky
December, the first month of the winter, in Luxembourg City, is also a wintry month, with temperature in the range of an average high of 3.9°C (39°F) and an average low of -0.5°C (31.1°F).

Temperature

In Luxembourg City, the average high-temperature in December slightly decreases, from a chilly 7.3°C (45.1°F) in November, to a cold 3.9°C (39°F). In December, in Luxembourg City, Luxembourg, the average low-temperature is -0.5°C (31.1°F).

Humidity

Months with the highest humidity are November and December, with an average relative humidity of 88%.

Rainfall

In Luxembourg City, in December, during 16.9 rainfall days, 86.7mm (3.41") of precipitation is typically accumulated. In Luxembourg City, during the entire year, the rain falls for 182.3 days and collects up to 897mm (35.31") of precipitation.

Daylight

With an average of 8.2h of daylight, December has the shortest days of the year.

Sunshine

December has the least sunshine of the year in Luxembourg City, with an average of 1.3h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Luxembourg City, Luxembourg. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.

What is the temperature in December in Luxembourg City?

The average high-temperature, in December, in Luxembourg City, is 3.9°C (39°F), while the average low-temperature is -0.5°C (31.1°F).

What are the most humid months in Luxembourg City?

November and December, with an average relative humidity of 88%, are most humid months.

What is the average humidity in December in Luxembourg City?

The average relative humidity in December in Luxembourg City, Luxembourg, is 88%.

How many days does it rain in December in Luxembourg City?

In Luxembourg City, Luxembourg, in December, during 16.9 rainfall days, 86.7mm (3.41") of precipitation is typically accumulated.

What is the month with the shortest days in Luxembourg City?

December has the shortest days of the year in Luxembourg City, Luxembourg, with an average of 8.2h of daylight.

What is the average length of the day in December in Luxembourg City?

The average length of the day in December in Luxembourg City is 8.2h.

What is the month with the least sunshine in Luxembourg City?

December has the least sunshine of the year, with an average of 1.3h of sunshine.

How long on average sun shines in December in Luxembourg City?

The average sunshine in December in Luxembourg City is 1.3h.

When is the lowest UV index in Luxembourg City?

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

What is the UV index intensity in December in Luxembourg City?

The average daily maximum UV index in December in Luxembourg City is 1. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV rays.
Average temperature in December - Luxembourg City, Luxembourg
  • Average high temperature in December: 3.9°C

The warmest month (with the highest average high temperature) is July (23.2°C).
The month with the lowest average high temperature is January (3.1°C).

  • Average low temperature in December: -0.5°C

The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).

Average humidity in December - Luxembourg City, Luxembourg
  • Average humidity in December: 88%

Months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is July (67%).

Average rainfall in December - Luxembourg City, Luxembourg
  • Average rainfall in December: 86.7mm

The wettest month (with the highest rainfall) is October (86.8mm).
The driest month (with the least rainfall) is April (58.2mm).

Average rainfall days in December - Luxembourg City, Luxembourg
  • Average rainfall days in December: 16.9 days

The month with the highest number of rainy days is January (18.3 days).
The month with the least rainy days is July (12.5 days).

Average daylight in December / Average sunshine in December - Luxembourg City, Luxembourg
  • Average daylight in December: 8.2h

The month with the longest days is June (Average daylight: 16.2h).
The month with the shortest days is December (Average daylight: 8.2h).

  • Average sunshine in December: 1.3h

The month with the most sunshine is July (Average sunshine: 8.1h).
The month with the least sunshine is December (Average sunshine: 1.3h).

Average UV index in December - Luxembourg City, Luxembourg
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).