July in Nantes averages a daily high of 25.3°C with nights around 14.4°C. Expect roughly 10 wet days totalling 46.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Nantes is May–September.
Based on NANTES BOUGUENAIS, FR (8.6km), 1995–2024. 30 years of July data.