Yawatahama, Japan offers 1 beach perfect for sunbathing, surfing, swimming, and more. Yawatahama is known for its bustling Yawatahama Port and the scenic Sadamisaki Peninsula. The best time to travel to Yawatahama, Japan, is in April when the average air temperature is around 15°C (59°F) and the water temperature is approximately 17°C (63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!