Barneville Carteret, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Barneville Carteret is known for its picturesque harbor, the Cap de Carteret lighthouse, and the beautiful beaches of the Cotentin Peninsula. The best time to travel to Barneville-Carteret, France, is from June to September, when the average air temperature is around 18-22°C (64-72°F) and the water temperature is approximately 16-19°C (61-66°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!