Ishigaki, Japan offers 35 beaches perfect for sunbathing, surfing, swimming, and more. Ishigaki is known for Kabira Bay and its stunning coral reefs. The best time to travel to Ishigaki, Japan, is from April to June, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 24°C (75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!