Shunan, Japan offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Shunan is known for the Tokuyama Zoo and the Shunan Industrial Complex. The best time to travel to Shunan, Japan, is in April when the average air temperature is around 15°C (59°F) and the average water temperature is approximately 14°C (57°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!