Setouchi, Japan offers 16 beaches perfect for sunbathing, surfing, swimming, and more. Besyol is known for its proximity to the ancient city of Troy and the Gallipoli Peninsula. The best time to travel to Setouchi, Japan, is in late spring (May), when the average air temperature is around 20°C (68°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!