Izumo, Japan offers 11 beaches perfect for sunbathing, surfing, swimming, and more. Izumo is known for the Izumo Taisha, one of Japan's most ancient and important Shinto shrines. The best time to travel to Izumo, Japan, is in May when the average air temperature is around 18°C (64°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!