Kumano, Japan offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Kumano is known for its ancient pilgrimage routes, the Kumano Kodo, which are UNESCO World Heritage Sites. The best time to travel to Kumano, Japan, is from April to June, with average air temperatures around 15-25°C (59-77°F) and water temperatures around 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!