May in La Rochelle averages a daily high of 17.8°C with nights around 12.8°C. Expect roughly 11.4 wet days totalling 45.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit La Rochelle is June–September.
Based on PTE DE CHASSIRON, FR (23.8km), 1995–2024. 30 years of May data.