Toyo, Japan offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Toyo, Shikoku, Japan, is known for the Iya Valley, a remote and scenic area famous for its vine bridges and hot springs. The best time to travel to Tokyo, Japan, is in spring (March to May) when the average air temperature is around 13-20°C (55-68°F) and water temperature is approximately 14-18°C (57-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!