Akcakale, Turkey offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Trabzon, Sumela Monastery. The best time to travel to Akcakale, Turkey, is in late spring or early fall when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!