Kumejima, Japan offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Kumejima is known for its stunning natural attractions like Hatenohama Beach and the Kumejima Tsumugi textile. The best time to travel to Kumejima, Japan, is from April to June, with average air temperatures around 22-28°C (72-82°F) and water temperatures around 23-26°C (73-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!