Hiboun, Tunisia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Hiboun, Mahdia, Tunisia, is known for its beautiful beaches and the historic Mahdia Old Town. The best time to travel to Hiboun, Tunisia, is from May to October, with average air temperatures ranging from 70°F to 90°F and water temperatures around 75°F to 80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!