Eynesil, Turkey offers 1 beach perfect for sunbathing, surfing, swimming, and more. Eynesil is known for its proximity to the scenic Black Sea coast and the historic Eynesil Castle. The best time to travel to Eynesil, Turkey, is from June to September, when the average air temperature is around 25°C (77°F) and the Black Sea 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!