Mihama, Japan offers 35 beaches perfect for sunbathing, surfing, swimming, and more. Mihama is known for the Mihama Seaside Park and the Mihama American Village. The best time to travel to Mihama, Japan, is from late spring to early summer (May to June), when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!