Kastel Sucurac, Croatia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Kastel Sucurac is known for its proximity to the historic city of Split and the UNESCO World Heritage Site of Diocletian's Palace. The best time to travel to Kastel Sucurac, Croatia, is from May to September, when the average air temperature is around 75°F (24°C) and the sea temperature is approximately 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!