Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
As November transitions into December, Mertert sees a gentle drop in the average high-temperature, transitioning from a chilly 7.9°C (46.2°F) to an icy 4.5°C (40.1°F). During the nights of December, Mertert records an average temperature of 0.2°C (32.4°F), a minor drop from daytime peaks.Humidity
December is the most humid month, with an average relative humidity of 91%.Rainfall
December is the month with the most rainfall in Mertert. Rain falls for 17.1 days and accumulates 69mm (2.72") of precipitation.Snowfall
January through April, October through December are months with snowfall. The months with the most snowfall in Mertert, Luxembourg, are January and December, with an average 66mm (2.6") of accumulated snow.Daylight
The month with the shortest days is December, with an average of 8h and 12min of daylight.On the first day of December, sunrise is at 08:10 and sunset at 16:36. On the last day of the month, sunrise is at 08:31 and sunset at 16:43 CET.
Sunshine
With an average of 3.1h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mertert. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Mertert?
What is the most humid month in Mertert?
What is the average humidity in December in Mertert?
What is the wettest month in Mertert?
How much does it rain in Mertert in December?
What is the snowiest month in Mertert?
How much does it snow in Mertert in December?
What is the month with the shortest days in Mertert?
How many hours of daylight does Mertert have in December?
When are sunrise and sunset in December in Mertert?
What is the month with the least sunshine in Mertert?
How many hours of sunshine does Mertert have in December?
What are the months with the lowest UV index in Mertert?
What is the UV index intensity in December in Mertert?
Average temperature in December
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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 48min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in December
Mertert, 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
Mertert, 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
Mertert, 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
Mertert, 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).
Mertert, Luxembourg
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