April in Vannes averages a daily high of 14.2°C with nights around 8.6°C. Expect roughly 11.2 wet days totalling 44.6mm. Generally workable, with some weather to plan around.
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 April data.