Minamiizu, Japan offers 12 beaches perfect for sunbathing, surfing, swimming, and more. Minamiizu, Shikoku, Japan, is known for its stunning beaches and the Shimanto River, which is often referred to as the last clear stream of Japan. The best time to travel to Minamiizu, Japan, is from April to June, with average air temperatures around 15-25°C (59-77°F) and water temperatures ranging from 16-22°C (61-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!