June in Luxembourg averages a daily high of 22.1°C with nights around 12.1°C. Expect roughly 11.4 wet days totalling 70.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Luxembourg is May–September.
Based on LUXEMBOURG AIRPORT, LU (5.4km), 1995–2024. 30 years of June data.