45527, Romania offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Constanta, known for the Black Sea coast, Mamaia resort, and the ancient Roman mosaic Edifice. The best time to travel to 45527, Romania, is in late spring (May to June) when the average air temperature is around 20°C (68°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!