May in Strasbourg averages a daily high of 21.1°C with nights around 10.2°C. Expect roughly 13.3 wet days totalling 80.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Strasbourg is May–September.
Based on STRASBOURG ENTZHEIM, FR (8.7km), 1995–2024. 30 years of May data.