Grad Cres, Croatia offers 41 beaches perfect for sunbathing, surfing, swimming, and more. Grad Cres, Primorje Gorski Kotar, Croatia, is known for Cres Island, Lake Vrana, and the historic Cres Town. The best time to travel to Grad Cres, Croatia, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures about 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!