Plat, Croatia offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Plat, Dubrovnik Neretva, Croatia, is known for its proximity to the historic city of Dubrovnik and the stunning Adriatic coastline. The best time to travel to Plat, Croatia, is from June to September, when the average air temperature is around 77°F (25°C) and the sea temperature is approximately 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!