Le Francois, France offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Le Francois, Le Marin, France, is known for its stunning marina and as a gateway to explore the beautiful beaches and sailing opportunities in Martinique. The best time to travel to Le Francois, France, is from June to September, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 77-82°F (25-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!