Tanohara, Japan offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Tanohara, Tohoku, Japan, is known for the Tanohara Ski Resort and the scenic beauty of the surrounding Ou Mountains. The best time to travel to Tanohara, Japan, is in late spring (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!