Kamoenai, Japan offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kamoenai is known for its proximity to the Shakotan Peninsula and the scenic Cape Kamui. The best time to travel to Kamoenai, Japan, is from June to September, with average air temperatures around 15-25°C (59-77°F) and water temperatures approximately 15-20°C (59-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!