September in Strasbourg averages a daily high of 22°C with nights around 10.8°C. Expect roughly 9.8 wet days totalling 50.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Strasbourg is May–September.
Based on STRASBOURG ENTZHEIM, FR (8.7km), 1995–2024. 30 years of September data.