Gradac, Croatia offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Gradac is known for its beautiful Makarska Riviera beaches and the scenic Biokovo Mountain. The best time to travel to Gradac, Croatia, is from June to September, when the average air temperature is around 25-30°C (77-86°F) and the sea temperature is approximately 23-26°C (73-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!