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
December
Weather in December
Temperature
A moderate decline in average high-temperatures is noted in December, moving from a chilly 7.5°C (45.5°F) in November to an icy 4.1°C (39.4°F). Nights in December showcase an average temperature of 0.1°C (32.2°F), slightly cooler than the daytime.Humidity
The most humid month in Mertzig is December, with an average relative humidity of 92%.Rainfall
The month with the most rainfall in Mertzig is December, when the rain falls for 16.8 days and typically aggregates up to 70mm (2.76") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Mertzig, during December, snow falls for 6.7 days and regularly aggregates up to 64mm (2.52") of snow. In Mertzig, Luxembourg, during the entire year, snow falls for 30.3 days and aggregates up to 249mm (9.8") of snow.Daylight
December has the shortest days of the year in Mertzig, with an average of 8h and 12min of daylight.On the first day of the month, sunrise is at 08:12 and sunset at 16:37. On the last day of December, sunrise is at 08:33 and sunset at 16:44 CET.
Sunshine
With an average of 2.9h of sunshine, December has the least sunshine of the year.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Mertzig in December?
What is the most humid month in Mertzig?
What is the average humidity in December in Mertzig?
What is the rainiest month in Mertzig?
How much does it rain in Mertzig in December?
How much does it snow in Mertzig in December?
What is the month with the shortest days in Mertzig?
How many hours of daylight does Mertzig have in December?
What time are sunrise and sunset in December in Mertzig?
What is the month with the least sunshine in Mertzig?
How long on average sun shines in December in Mertzig?
When is the lowest UV index in Mertzig?
How high is the UV index in December in Mertzig?
Average temperature in December
Mertzig, Luxembourg
- Average high temperature in December: 4.1°C
The warmest month (with the highest average high temperature) is August (21.7°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in December: 0.1°C
The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in December
Mertzig, Luxembourg
- Average pressure in December: 1018mbar
The month with the highest atmospheric pressure is December (1018mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in December
Mertzig, Luxembourg
- Average wind speed in December: 15.6km/h
The windiest month (with the highest average wind speed) is February (15.9km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in December
Mertzig, Luxembourg
- Average humidity in December: 92%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are April and August (79%).
Average rainfall in December
Mertzig, Luxembourg
- Average rainfall in December: 70mm
The wettest month (with the highest rainfall) is December (70mm).
The driest month (with the least rainfall) is April (36mm).
Average rainfall days in December
Mertzig, Luxembourg
- Average rainfall days in December: 16.8 days
The months with the highest number of rainy days are June and July (19.1 days).
The month with the least rainy days is February (12.7 days).
Average snowfall in December
Mertzig, Luxembourg
- Average snowfall in December: 64mm
The month with the highest snowfall is January (78mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Mertzig, Luxembourg
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mertzig, Luxembourg
- Average daylight in December: 8h and 1min
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: 2h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in December
Mertzig, Luxembourg
- Average sunshine days in December: 9 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in December
Mertzig, 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, March, November and December (UV index 2).
Average cloud cover in December
Mertzig, Luxembourg
- Average cloud cover in December: 72
The month with the most cloud cover is December (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in December
Mertzig, Luxembourg
- Average visibility in December: 7km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are November and December (7km).
