Sanuki, Japan offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Pinawa is known for the Pinawa Dam Provincial Heritage Park and the Whiteshell Provincial Park. The best time to travel to Sanuki, Japan, is in April when the average air temperature is around 15°C (59°F) and the water temperature is approximately 16°C (61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!