Vannes 18 °C Mild. Feels Like: 18 °C Forecast: 20 / 14 °C Wind: 35 km/h ↑ from West Department: Morbihan Department High: 18 °C Vannes Department Low: 18 °C Vannes Max Wind: 35 km/h Vannes °C Weather in Morbihan (1 Location) Vannes * Wed 5:21 pm 18 °C Need some help?