Sakai, Japan offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Sakai, Chubu, Japan, is known for the Mozu-Furuichi Kofun Group, a UNESCO World Heritage site featuring ancient burial mounds. The best time to travel to Sakai, Japan, is in April when the average air temperature is around 15°C (59°F) and the 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!