Le Grau du Roi, France offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Le Grau du Roi is known for its Port-Camargue, Seaquarium, and Espiguette Beach. The best time to travel to Le Grau du Roi, 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!