Dereagzi, Turkey offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Istanbul is known for the Hagia Sophia, Topkapi Palace, and the Grand Bazaar. The best time to travel to Dereagzi, Turkey, is in late spring (May to early June) when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-20°C (64-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!