Itoigawa, Japan offers 12 beaches perfect for sunbathing, surfing, swimming, and more. Vityazevo is known for its beautiful sandy beaches along the Black Sea and the Vityazevo Aquapark. The best time to travel to Itoigawa, Japan, is in late spring (May), when the average air temperature is around 18°C (64°F) and the 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!