May Weather in Mersch, Luxembourg

Last updated: August 23, 2025

In May, the average temperature in Mersch, Luxembourg hovers around 13°C (55°F). Expect a range that can dip as low as -1°C (31°F) and soar to 30°C (86°F). During this month, precipitation amounts to 74 mm (2.9 in) over the course of 13 days, with an average humidity level of 81%, creating a distinctly moist atmosphere.

May Temperature in Mersch

In May in Mersch, the average temperature is 13°C (55°F). Maximums can reach 30°C (86°F) and minimums can be as low as -1°C (31°F). It's advisable to pack layers and enjoy a mix of warm and cool weather during your travels.

May Weather in Mersch: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Mersch, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mersch, May typically has an average temperature of 13°C (55°F), with highs reaching up to 30°C (86°F) and lows dropping to around -1°C (31°F).

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

May Precipitation in Mersch

In Mersch in May, the precipitation amount is 74 mm (2.9 in) over the course of 13 days.

May Precipitation Trends in Mersch

The chart displays monthly precipitation patterns in Mersch, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Mersch, May typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Mersch

In Mersch in May, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.

May Average Humidity in Mersch

This chart illustrates the average monthly humidity levels in Mersch, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Mersch is approximately 81%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Mersch

In Mersch in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Mersch.

Maximum UV Index Levels in Mersch for May

The chart shows the monthly maximum UV Index (UVI) for Mersch in May, 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 May, the maximum UV index in Mersch typically reaches 8, which falls under the very high exposure category.

Data source: Mersch May 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 May Weather in Mersch Compares to Other Months

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

This table compares monthly weather conditions in Mersch, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	72 mm (2.8 inches)	91%	low
February Weather	3°C (38°F)	75 mm (3.0 inches)	90%	moderate
March Weather	6°C (43°F)	83 mm (3.2 inches)	88%	moderate
April Weather	9°C (49°F)	41 mm (1.6 inches)	84%	high
May Weather	13°C (55°F)	74 mm (2.9 inches)	81%	very high
June Weather	17°C (64°F)	77 mm (3.0 inches)	82%	very high
July Weather	18°C (65°F)	73 mm (2.9 inches)	82%	very high
August Weather	18°C (65°F)	66 mm (2.6 inches)	80%	very high
September Weather	14°C (58°F)	64 mm (2.5 inches)	83%	high
October Weather	10°C (51°F)	80 mm (3.2 inches)	89%	moderate
November Weather	5°C (42°F)	69 mm (2.7 inches)	91%	low
December Weather	4°C (39°F)	122 mm (4.8 inches)	93%	low