Tateyama, Japan offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Tateyama is known for Tateyama Castle and the Tateyama Family Park. The best time to travel to Tateyama, Japan, is from April to June, with average air temperatures around 15-25°C (59-77°F) and water temperatures around 15-20°C (59-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!