Neufchatel Hardelot, France offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Neufchatel Hardelot is known for Hardelot Castle and Hardelot Beach. The best time to travel to Neufchatel-Hardelot, 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!