Yakushima, Japan offers 11 beaches perfect for sunbathing, surfing, swimming, and more. Yakushima, Kyushu, Japan, is known for its ancient cedar forests, particularly the Jomon Sugi tree, and its designation as a UNESCO World Heritage Site. The best time to travel to Yakushima, Japan, is from March to May, with average air temperatures ranging from 15°C to 20°C and water temperatures around 20°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!