Under the influence of the Atlantic Ocean, the climate is cool in summer. However, the Vendée is one of the sunniest departments of France in terms of the energy received, with 1268 kWh per m per year. 9 The climate of the Vendée department is oceanic. Markets in and near Saint-Gilles, market days in Saint-Gilles: weekly market: Thursday Sunday; Saint-Gilles: market Thursday Sunday (0km bellegarde: market Friday (11km). 10 Culture edit Religion edit Saint-Gilles-Croix-de-Vie church (1896) The town has two Catholic churches (one on either side of the river the churches of Saint-Gilles et Sainte-Croix. Par précaution, prenez 10 minutes pour vérifier nos informations météo Saint-Gilles.