Ile D Aix, France offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Ile D Aix is known for Fort Boyard and Napoleon's last residence in France. The best time to travel to Ile D'Aix, 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 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!