July in Vannes averages a daily high of 21.4°C with nights around 15.5°C. Expect roughly 9.6 wet days totalling 38.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Vannes is June–September.
Based on BELLE ILE LE TALUT, FR (52.9km), 1995–2024. 30 years of July data.