Mersin, Turkey offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Mersin, Mersin is known for the ancient city of Soli-Pompeiopolis and the Mersin Marina. The best time to travel to Mersin, Turkey, is from May to October, with average air temperatures ranging from 25°C to 30°C and water temperatures from 23°C to 28°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!