Kunisaki, Japan offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Kunisaki is known for its historic temples and scenic landscapes in Kyushu, Japan. The best time to travel to Kunisaki, Japan, is in April when the average air temperature is around 15°C (59°F) and the average 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!