September in Poitiers averages a daily high of 22.9°C with nights around 10.9°C. Expect roughly 8.6 wet days totalling 47.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Poitiers is June–September.
Based on POITIERS BIARD, FR (2.6km), 1995–2024. 30 years of September data.