May in Poitiers averages a daily high of 20.1°C with nights around 9°C. Expect roughly 12.8 wet days totalling 68.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Poitiers is June–September.
Based on POITIERS BIARD, FR (2.6km), 1995–2024. 30 years of May data.