Port Saint Louis du Rhone, France offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Port Saint Louis du Rhone is known for the Camargue Regional Nature Park. The best time to travel to Port Saint Louis du Rhone, France, is from June to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!