Kitakyushu, Japan offers 14 beaches perfect for sunbathing, surfing, swimming, and more. Kitakyushu is known for the Kokura Castle and the Mojiko Retro District. The best time to travel to Kitakyushu, Japan, is in April when the average air temperature is around 15°C (59°F) and the average water temperature is approximately 16°C (61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!