Izu, Japan offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Izu is known for its scenic Izu Peninsula, the historic Shuzenji Temple, and the relaxing hot springs of Atami and Ito. The best time to travel to Izu, Japan, is from April to June when the average air temperature is around 15-25°C (59-77°F) and the water temperature is approximately 16-20°C (61-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!