Itoman, Japan offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Itoman is known for the Peace Memorial Park and the Himeyuri Monument. The best time to travel to Itoman, Japan, is from April to June, with average air temperatures around 22-28°C (72-82°F) and water temperatures approximately 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!