Kuji, Japan offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Kuji is known for its traditional amber industry and the Ama female divers. The best time to travel to Kuji, Japan, is in late spring (May), when the average air temperature is around 15°C (59°F) and the water temperature is approximately 12°C (54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!