January weather forecast
Luxembourg City, Luxembourg

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A scenic morning panorama of the rocky city of Luxembourg, in Luxembourg
A scenic morning panorama of the rocky city of Luxembourg, in Luxembourg

Weather in January

January in Luxembourg City, Luxembourg, is characterized by frosty mornings and gloomy days. It is the coldest month of the year with average low temperatures plunging to -1.6°C (29.1°F) and highs only reaching 3.1°C (37.6°F). Bare tree branches and a crisp starkness in the air make walking around the city a different experience this month. Limited daylight and reduced sunshine hours result in a rather minimalist landscape. Needle-like icicles often decorate windows and rooftops, affirming the winter chill.

Temperature

In Luxembourg City, January is the coldest month, with temperatures averaging a high of 3.1°C (37.6°F) and a low of -1.6°C (29.1°F).

Humidity

The average relative humidity in January is 87%.

Rainfall

In January, in Luxembourg City, the rain falls for 18.3 days. Throughout January, 77mm (3.03") of precipitation is accumulated. Throughout the year, there are 182.3 rainfall days, and 897mm (35.31") of precipitation is accumulated.

Daylight

In Luxembourg City, Luxembourg, the average length of the day in January is 8h and 42min.
On the first day of the month, sunrise is at 08:32 and sunset at 16:45. On the last day of January, in Luxembourg City, sunrise is at 08:09 and sunset at 17:28 CET.

Sunshine

The average sunshine in January is 1.6h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 1 during January leads to these advisories:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Frequently asked questions

What time of the year is the coldest in Luxembourg City?

January, known for its average high temperature of 3.1°C (37.6°F) and an average low temperature of -1.6°C (29.1°F), is the coldest month.

How cold is it in Luxembourg City in January?

The high-temperature, in January, in Luxembourg City, records 3.1°C (37.6°F), while the low-temperature is -1.6°C (29.1°F).

What is the average humidity in January in Luxembourg City?

In January, the average relative humidity is 87%.

How many days does it rain in January in Luxembourg City?

In Luxembourg City, Luxembourg, in January, it is raining for 18.3 days, with typically 77mm (3.03") of accumulated precipitation.

What is the average length of the day in January in Luxembourg City?

The average day length in January in Luxembourg City is 8h and 42min.

When is the sunrise / sunset in January in Luxembourg City?

In January, on the first day of the month, sunrise is at 08:32 and sunset at 16:45. On the last day of the month, in Luxembourg City, Luxembourg, sunrise is at 08:09 and sunset at 17:28 CET.

How long on average sun shines in January in Luxembourg City?

In Luxembourg City, Luxembourg, the average sunshine duration in January is 1.6h.

When is the lowest UV index in Luxembourg City?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

How high is the UV index in January in Luxembourg City?

In January, the average daily maximum UV index in Luxembourg City, Luxembourg, is 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Luxembourg City, Luxembourg

Average temperature in January - Luxembourg City, Luxembourg
  • Average high temperature in January: 3.1°C

The warmest month (with the highest average high temperature) is July (23.2°C).
The month with the lowest average high temperature is January (3.1°C).

  • Average low temperature in January: -1.6°C

The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).

Average humidity in January
Luxembourg City, Luxembourg

Average humidity in January - Luxembourg City, Luxembourg
  • Average humidity in January: 87%

The months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is July (67%).

Average rainfall in January
Luxembourg City, Luxembourg

Average rainfall in January - Luxembourg City, Luxembourg
  • Average rainfall in January: 76.6mm

The wettest month (with the highest rainfall) is October (86.8mm).
The driest month (with the least rainfall) is April (58.2mm).

Average rainfall days in January
Luxembourg City, Luxembourg

Average rainfall days in January - Luxembourg City, Luxembourg
  • Average rainfall days in January: 18.3 days

The month with the highest number of rainy days is January (18.3 days).
The month with the least rainy days is July (12.5 days).

Average daylight in January /
Average sunshine in January
Luxembourg City, Luxembourg

Average daylight in January / Average sunshine in January - Luxembourg City, 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: 1h and 4min

The month with the most sunshine is July (Average sunshine: 8h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).

Average UV index in January
Luxembourg City, Luxembourg

Average UV index in January - Luxembourg City, Luxembourg
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 1).

Luxembourg City, Luxembourg

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