Luxembourg weather in May
May in Luxembourg: cool, a little rain, with clean air — an excellent time to visit.
#5 of 12 months in Luxembourg · #291 of 604 destinations to visit in May · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Luxembourg climate normals — May
| Daytime high | 16°C / 61°F | 🙂 cool |
|---|---|---|
| Nighttime low | 7°C / 44°F | |
| Feels like (high) | 14°C / 57°F | |
| Rainfall | 54 mm / 2.1 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 15.4 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 46 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Luxembourg in May — FAQ
- Is May a good time to visit Luxembourg?
- May in Luxembourg: cool, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for Luxembourg on SeasonMap's comfort score (82/100).
- What is the weather like in Luxembourg in May?
- In May, Luxembourg averages a daily high of 16°C and a low of 6.6°C, with about 53.6 mm of rain over roughly 10.8 rainy days.
- What is the air quality in Luxembourg in May?
- Luxembourg has a mean US Air Quality Index of about 46 in May.