July Weather in Mersch, Luxembourg

Last updated: August 23, 2025

In July, the average temperature in Mersch, Luxembourg is a pleasant 18°C (65°F). However, temperatures can vary significantly, with a minimum of 7°C (45°F) and peaking at a sweltering 37°C (100°F). Expect around 73 mm (2.9 in) of precipitation during 9 days, contributing to an average humidity level of 82%. Be prepared for a mix of delightful warmth and refreshing rainfall!

July Temperature in Mersch

In July in Mersch, the average temperature is 18°C (65°F). Maximums can reach 37°C (100°F), while minimums can drop as low as 7°C (45°F). Be sure to pack accordingly to enjoy your travels comfortably!

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

The chart illustrates July 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, July typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (100°F) and lows dropping to around 7°C (45°F).

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

July Precipitation in Mersch

In Mersch in July, the precipitation amount is 73 mm (2.9 in), occurring over the course of 9 days.

July Precipitation Trends in Mersch

The chart displays monthly precipitation patterns in Mersch, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Mersch, July typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Mersch

In Mersch in July, humidity is 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.

July Average Humidity in Mersch

This chart illustrates the average monthly humidity levels in Mersch, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Mersch is approximately 82%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Mersch

In Mersch in July, 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 July

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

Data source: Mersch July 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 July 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 July’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 July’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