Sfantu Gheorghe, Romania offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sfantu Gheorghe, Tulcea County, Romania, is known for the Danube Delta Biosphere Reserve. The best time to travel to Sfantu Gheorghe, Romania, is during late spring to early autumn (May to September), when the average air temperature ranges from 18°C to 28°C (64°F to 82°F) and the water temperature in the Danube Delta is around 20°C to 24°C (68°F to 75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!