Osenovo, Bulgaria offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Osenovo, Varna, Bulgaria, is known for its proximity to the Black Sea and the popular Golden Sands resort. The best time to travel to Osenovo, Bulgaria, is in late spring or early summer, with average air temperatures around 20-25°C (68-77°F) and water temperatures in the Black Sea around 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!