Doni Stoj, Montenegro offers 33 beaches perfect for sunbathing, surfing, swimming, and more. Ulcinj, Montenegro, is known for its historic Old Town, Velika Plaza beach, and the Ada Bojana island. The best time to travel to Doni Stoj, Montenegro, is from June to September, when the average air temperature is around 25-30°C (77-86°F) and the water 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!