Kagoshima, Japan offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Kagoshima is known for Sakurajima volcano, Sengan-en Garden, and the Kagoshima Aquarium. The best time to travel to Kagoshima, Japan, is in April when the average air temperature is around 18°C (64°F) and the water temperature is approximately 19°C (66°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!