Lancieux, France offers 1 beach perfect for sunbathing, surfing, swimming, and more. Lancieux is known for its beautiful beaches and proximity to the Emerald Coast in Brittany, France. The best time to travel to Lancieux, France, is during the summer months of June to August, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 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!