Saint Gilles Croix de Vie, France offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Saint Gilles Croix de Vie is known for its picturesque fishing port and the Vendée Globe yacht race. The best time to travel to Saint Gilles Croix de Vie, France, is from June to September, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-21°C (64-70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!