Berre l Etang, France offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Berre l Etang is known for the Etang de Berre, one of Europe's largest saltwater lagoons. The best time to travel to Berre l'Etang, France, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures near 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!