January weather forecast
Mertert, Luxembourg

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Weather in January

January, the heart of winter in Mertert, Luxembourg, is characterized mainly by low temperatures and a fair share of rainfall. A distinctive feature of this month is the substantial snowfall of 66mm (2.6"), affecting weather conditions and daily routines. The quiet and serene landscapes of the city transform into a white wonderland, making it a perfect destination for those fond of winter beauty. Expect higher humidity and less sunlight, as daylight spans only approximately 8.7 hours. Consistent with winter patterns, wind speeds tend to increase during these months, proving it to be chillier than what the temperature suggests.

Temperature

During the coldest month in Mertert, January, temperatures average a high of 3.1°C (37.6°F) and a low of -1.3°C (29.7°F).

Humidity

The average relative humidity in January is 90%.

Rainfall

In Mertert, in January, it is raining for 15.2 days, with typically 49mm (1.93") of accumulated precipitation. Throughout the year, there are 170 rainfall days, and 516mm (20.31") of precipitation is accumulated.

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

In Mertert, the average length of the day in January is 8h and 41min.
On the first day of January in Mertert, Luxembourg, sunrise is at 08:31 and sunset at 16:43. On the last day of the month, sunrise is at 08:08 and sunset at 17:26 CET.

Sunshine

In January, the average sunshine is 3.5h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 2 during January translates into the following guidance:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Enhance your sun protection with tightly woven, yet airy clothing. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Feb 3, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What time of the year is the coldest in Mertert?

Mertert notes the coldest temperatures in January, with a average high of 3.1°C (37.6°F) and a low of -1.3°C (29.7°F).

How cold is January in Mertert?

In January, in Mertert, the average high-temperature is 3.1°C (37.6°F), and the average low-temperature is -1.3°C (29.7°F).

What is the average humidity in January in Mertert?

In Mertert, Luxembourg, the average relative humidity in January is 90%.

How many days does it rain in January in Mertert?

In January, the rain falls for 15.2 days. Throughout January, 49mm (1.93") of precipitation is accumulated.

What is the snowiest month in Mertert?

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

How many days does it snow in January in Mertert?

In Mertert, in January, snow falls for 7.9 days, with typically accumulated 66mm (2.6") of snow.

What is the average length of the day in January in Mertert?

In January, the average day length in Mertert, Luxembourg, is 8h and 41min.

When is the sunrise / sunset in January in Mertert?

On the first day of January in Mertert, Luxembourg, sunrise is at 08:31 and sunset at 16:43. On the last day of the month, sunrise is at 08:08 and sunset at 17:26 CET.

How long on average sun shines in January in Mertert?

In January, the average sunshine duration is 3.5h.

What is the month with the lowest UV index in Mertert?

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

What is the UV index intensity in January in Mertert?

The average daily maximum UV index in January in Mertert, Luxembourg, is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Mertert, Luxembourg

Average temperature in January - Mertert, Luxembourg
  • Average high temperature in January: 3.1°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 January: -1.3°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 January
Mertert, Luxembourg

Average pressure in January - Mertert, Luxembourg
  • Average pressure in January: 1017.7mbar

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 January
Mertert, Luxembourg

Average wind speed in January - Mertert, Luxembourg
  • Average wind speed in January: 13.8km/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 January
Mertert, Luxembourg

Average humidity in January - Mertert, Luxembourg
  • Average humidity in January: 90%

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 January
Mertert, Luxembourg

Average rainfall in January - Mertert, Luxembourg
  • Average rainfall in January: 49mm

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

Average rainfall days in January
Mertert, Luxembourg

Average rainfall days in January - Mertert, Luxembourg
  • Average rainfall days in January: 15.2 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 January
Mertert, Luxembourg

Average snowfall in January - Mertert, Luxembourg
  • Average snowfall in January: 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 January
Mertert, Luxembourg

Average snowfall days in January - Mertert, Luxembourg
  • Average snowfall days in January: 7.9 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 January /
Average sunshine in January
Mertert, Luxembourg

Average daylight in January / Average sunshine in January - Mertert, Luxembourg
  • Average daylight in January: 8h and 4min

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 January: 3h and 3min

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 January
Mertert, Luxembourg

Average sunshine days in January - Mertert, Luxembourg
  • Average sunshine days in January: 9.5 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 January
Mertert, Luxembourg

Average UV index in January - Mertert, Luxembourg
  • Average UV index in January: 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 January
Mertert, Luxembourg

Average cloud cover in January - Mertert, Luxembourg
  • Average cloud cover in January: 65

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 January
Mertert, Luxembourg

Average visibility in January - Mertert, Luxembourg
  • Average visibility in January: 8km

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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