Sveti Vlas, Bulgaria offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Sveti Vlas is known for its Marina Dinevi, a luxury yacht port, and its proximity to the popular Sunny Beach resort. The best time to travel to Sveti Vlas, Bulgaria, is from June to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 23°C (73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!