Hokuei, Japan offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Hokuei is known for being the hometown of the famous manga character Detective Conan, with attractions like the Detective Conan Museum and Conan Street. The best time to travel to Hokuei, Japan, is in April when the average air temperature is around 15°C (59°F) and the average water temperature is approximately 14°C (57°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!