Hiratsuka, Japan offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Hiratsuka is known for the Shonan Hiratsuka Tanabata Festival, which is one of the largest Tanabata festivals in Japan. The best time to travel to Hiratsuka, Japan, is in late spring (May), when the average air temperature is around 20°C (68°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!