January weather forecast
Mertert, Luxembourg

January

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

In Mertert, the lowest temperatures are generally noted in January, averaging a high of 3.1°C (37.6°F) and a low of -1.3°C (29.7°F).

Humidity

In January, the average relative humidity 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

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

Daylight

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

Sunshine

In Mertert, the average sunshine in January 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 of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 during January leads to these advisories:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.

Frequently asked questions

What time of the year is the coldest?
January is the coldest month, exhibiting average temperatures of 3.1°C (37.6°F) at the peak and -1.3°C (29.7°F) at the base.
How cold is January?
The high-temperature during January is 3.1°C (37.6°F) and the low-temperature is -1.3°C (29.7°F).
What is the average humidity in January?
In Mertert, the average relative humidity in January is 90%.
How much does it rain in January?
In January, the rain falls for 15.2 days. Throughout January, 49mm (1.93") of precipitation is accumulated.
When does it snow the most?
The months with the most snowfall are January and December, with an average 66mm (2.6") of accumulated snow.
How much does it snow in January?
In January, it is snowing for 7.9 days. Throughout January, 66mm (2.6") of snow is accumulated.
What is the average length of the day in January?
The average day length in January in Mertert is 8h and 41min.
When is the sunrise / sunset in January in Mertert?
In January, on the first day of the month, 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 many hours of sunshine does Mertert have in January?
The average sunshine duration in January is 3.5h.
When is the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mertert.
What is the UV index reading in January?
The average daily maximum UV index in January in Mertert is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
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 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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).

englishespañol中文
Share