L Ile Rousse, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. L Ile Rousse, Corsica, France, is known for its stunning red granite rocks and the historic lighthouse, Phare de la Pietra. The best time to visit L'Ile Rousse, France, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures about 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!