Ugljan, Croatia offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Ugljan is known for its beautiful beaches, olive groves, and the historic St. Michael's Fortress. The best time to travel to Ugljan, Croatia, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures about 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!