Kornati, Croatia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Kornati, Sibenik Knin, Croatia, is known for Kornati National Park, a stunning archipelago of islands renowned for their natural beauty and crystal-clear waters. The best time to travel to Kornati, Croatia, is from June to September, with average air temperatures around 75-85°F (24-29°C) and water temperatures ranging from 72-77°F (22-25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!