Shirako, Japan offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Shirako is known for its Shirako Onsen, a popular hot spring destination in the Kanto region of Japan. The best time to travel to Shirako, Japan, is in 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!