La Seyne sur Mer, France offers 12 beaches perfect for sunbathing, surfing, swimming, and more. La Seyne sur Mer is known for Les Sablettes Beach and the Fort de Balaguier. The best time to travel to La Seyne sur Mer, France, is from June to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
