Kasustu, Turkey offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kasustu, Trabzon, Turkey, is known for its proximity to the stunning Sumela Monastery and the scenic Uzungol Lake. The best time to travel to Kasustu, Turkey, is from June to September, with average air temperatures around 25-30°C (77-86°F) and water temperatures approximately 23-26°C (73-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!