Beaulieu sur Mer, France offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Beaulieu sur Mer is known for the Villa Kerylos and its picturesque Mediterranean coastline. The best time to travel to Beaulieu sur Mer, France, is from May to September, when the average air temperature is around 70-80°F (21-27°C) and the water temperature is approximately 68-75°F (20-24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!