Penestin, France offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Penestin is known for its stunning Mine d'Or Beach and the picturesque coastline along the Atlantic Ocean. The best time to travel to Penestin, France, is from June to September, with average air temperatures around 18-22°C (64-72°F) and water temperatures around 17-20°C (63-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!