January Weather in Wiltz, Luxembourg

Last updated: August 23, 2025

In January, the average temperature in Wiltz, Luxembourg is a chilly 1°C (35°F). Expect a wide temperature range, with minimums plunging to -15°C (6°F) and maximums reaching up to 11°C (52°F). This month also brings considerable precipitation, averaging 80 mm (3.1 in) over about 13 days, contributing to a humid atmosphere with an average humidity of 91%.

January Temperature in Wiltz

In January in Wiltz, the average temperature is 1°C (35°F), with maximums reaching 11°C (52°F) and minimums dropping as low as -15°C (6°F). Travelers should prepare for a chilly climate and dress in layers to enjoy the beauty of Wiltz during this time.

January Weather in Wiltz: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Wiltz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wiltz, January typically has an average temperature of 1°C (35°F), with highs reaching up to 11°C (52°F) and lows dropping to around -15°C (6°F).

Data source: Temperature data for Wiltz generated using information from the Copernicus Climate Change Service.

January Precipitation in Wiltz

In Wiltz in January, the precipitation amount is 80 mm (3.1 in) spread over the course of 13 days.

January Precipitation Trends in Wiltz

The chart displays monthly precipitation patterns in Wiltz, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Wiltz, January typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Wiltz

In Wiltz in January humidity is 91%. With an average temperature of 1°C (35°F), this humidity feels like an icy mist clinging to your skin, making every step outside a challenge as you contend with the chill and dampness that wraps around you, dampening the joy of exploration.

January Average Humidity in Wiltz

This chart illustrates the average monthly humidity levels in Wiltz, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Wiltz is approximately 91%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Wiltz

In Wiltz in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Wiltz, you can visit Hourly UV Index in Wiltz.

Maximum UV Index Levels in Wiltz for January

The chart shows the monthly maximum UV Index (UVI) for Wiltz in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Wiltz typically reaches 2, which falls under the low exposure category.

Data source: Wiltz January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Wiltz Compares to Other Months

Weather in Wiltz varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Wiltz, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Wiltz, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	80 mm (3.1 inches)	91%	low
February Weather	3°C (38°F)	77 mm (3.0 inches)	90%	moderate
March Weather	5°C (42°F)	91 mm (3.6 inches)	88%	moderate
April Weather	9°C (48°F)	44 mm (1.7 inches)	84%	high
May Weather	12°C (54°F)	81 mm (3.2 inches)	81%	very high
June Weather	17°C (63°F)	86 mm (3.4 inches)	82%	very high
July Weather	18°C (64°F)	79 mm (3.1 inches)	82%	very high
August Weather	18°C (64°F)	77 mm (3.0 inches)	80%	very high
September Weather	14°C (57°F)	70 mm (2.7 inches)	83%	high
October Weather	10°C (50°F)	83 mm (3.3 inches)	89%	moderate
November Weather	5°C (41°F)	68 mm (2.7 inches)	91%	low
December Weather	3°C (38°F)	123 mm (4.9 inches)	93%	low