Rokkasho, Japan offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Tanjungan, Central Java, Indonesia, is known for its proximity to the Borobudur Temple, a UNESCO World Heritage Site. The best time to travel to Rokkasho, Japan, is in late spring (May), when the average air temperature is around 15°C (59°F) and the water temperature is approximately 12°C (54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!