Last updated: August 23, 2025
In August, the average temperature in Mersch, Luxembourg hovers around 18°C (65°F). Expect a range where the minimum dips to 6°C (43°F) and the maximum can soar up to 34°C (94°F). This month sees 66 mm (2.6 in) of precipitation spread across 13 days, while humidity levels are typically around 80%. Stay prepared for both warm days and refreshing showers!
In August in Mersch, the average temperature is 18°C (65°F), with maximums reaching 34°C (94°F) and minimums dropping to as low as 6°C (43°F). This variety in temperatures makes it essential for travelers to pack layers to enjoy all that Mersch has to offer comfortably.
In Mersch in August, the total precipitation amount is 66 mm (2.6 in) spread over the course of 13 days.
In Mersch in August, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.
In Mersch in August, 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.
UV Risk Categories
Weather in Mersch varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Mersch, focusing on differences in temperature, rainfall, humidity, and UV levels.
| 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 |