Mlini, Croatia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mlini is known for its picturesque beaches and proximity to the historic city of Dubrovnik. The best time to travel to Mlini, 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!