January in Vannes averages a daily high of 10.1°C with nights around 6.3°C. Expect roughly 15.5 wet days totalling 78mm. Demanding conditions — pack for it and plan indoor options.
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 January data.