December weather forecastHaller, Luxembourg

December

Weather in December

The first month of the winter, December, is also an icy month in Haller, Luxembourg, with temperature in the range of an average high of 4.5°C (40.1°F) and an average low of 0.2°C (32.4°F).

Temperature

Haller's weather subtly changes with the onset of December, barely falling from a chilly 7.9°C (46.2°F) in November to a wintry 4.5°C (40.1°F). During December, Haller's temperature shows a minor deviation from daytime highs, falling to a steady low-temperature average of 0.2°C (32.4°F).

Humidity

December is the most humid month, with an average relative humidity of 91%.

Rainfall

December is the month with the most rainfall in Haller, Luxembourg. Rain falls for 17.1 days and accumulates 69mm (2.72") of precipitation.

Snowfall

Months with snowfall are January through April, October through December. The months with the most snowfall are January and December, with an average 66mm (2.6") of accumulated snow.

Daylight

December has the shortest days of the year in Haller, Luxembourg, with an average of 8h and 12min of daylight.
On the first day of the month, sunrise is at 08:11 and sunset at 16:36. On the last day of December, sunrise is at 08:32 and sunset at 16:43 CET.

Sunshine

The month with the least sunshine is December, with an average of 3.1h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Haller. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Updated: Feb 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In December, in Haller, the average high-temperature is 4.5°C (40.1°F), and the average low-temperature is 0.2°C (32.4°F).

December is the most humid month in Haller, with an average relative humidity of 91%.

In Haller, the average relative humidity in December is 91%.

December is the month with the most rainfall. Rain falls for 17.1 days and accumulates 69mm (2.72") of precipitation.

In Haller, during December, the rain falls for 17.1 days and regularly aggregates up to 69mm (2.72") of precipitation.

The months with the most snowfall in Haller are January and December, with an average 66mm (2.6") of accumulated snow.

In Haller, during December, snow falls for 6.9 days and regularly aggregates up to 66mm (2.6") of snow.

December has the shortest days of the year in Haller, with an average of 8h and 12min of daylight.

In December, the average day length in Haller is 8h and 11min.

In December, on the first day of the month, sunrise is at 08:11 and sunset at 16:36. On the last day of the month, in Haller, sunrise is at 08:32 and sunset at 16:43 CET.

The month with the least sunshine in Haller is December, with an average of 3.1h of sunshine.

The average sunshine duration in December is 3.1h.

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

The average daily maximum UV index in December in Haller is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

7.9°C

4.5°C

3.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.4km/h

15.2km/h

14.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

9.5

7.6

9.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Haller, Luxembourg

Average high temperature in December: 4.5°C

The warmest month (with the highest average high temperature) is July (22.7°C).
The month with the lowest average high temperature is January (3.1°C).

Average low temperature in December: 0.2°C

The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).

Average pressure in December
Haller, Luxembourg

Average pressure in December: 1018.3mbar

The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is November (1014.2mbar).

Average wind speed in December
Haller, Luxembourg

Average wind speed in December: 14.2km/h

The windiest month (with the highest average wind speed) is February (14.7km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).

Average humidity in December
Haller, Luxembourg

Average humidity in December: 91%

The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are April and August (76%).

Average rainfall in December
Haller, Luxembourg

Average rainfall in December: 69mm

The wettest month (with the highest rainfall) is December (69mm).
The driest month (with the least rainfall) is July (25mm).

Average rainfall days in December
Haller, Luxembourg

Average rainfall days in December: 17.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is September (9.6 days).

Average snowfall in December
Haller, Luxembourg

Average snowfall in December: 66mm

The months with the highest snowfall are January and December (66mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in December
Haller, Luxembourg

Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is January (7.9 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
Haller, Luxembourg

Average daylight in December: 8h and 12min

The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).

Average sunshine in December: 3h and 6min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).

Average sunshine days in December
Haller, Luxembourg

Average sunshine days in December: 7.6 days

The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is December (7.6 days).

Average UV index in December
Haller, 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
Haller, Luxembourg

Average cloud cover in December: 70

The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in December
Haller, Luxembourg

Average visibility in December: 7km

The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are November and December (7km).