September in Metz averages a daily high of 19.6°C with nights around 10.6°C. Expect roughly 9.9 wet days totalling 55.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Metz is June–September.
Based on BERUS, GM (40.8km), 1995–2024. 30 years of September data.