Uto, Japan offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Uto is known for its proximity to the scenic Amakusa Islands and the historic Uto Castle ruins. The best time to travel to Uto, Japan, is in April when the average air temperature is around 16°C (61°F) and the average water temperature is approximately 17°C (63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!