Sun Beach is a sheltered beach break located in a protected bay on Japan's eastern coast. The spot features a sandy beach with a gentle slope into shallow water, bordered by residential and industrial development. The northerly-facing shoreline provides natural protection from open ocean swells, resulting in small, consistent wave conditions suitable for progression. The beach faces into a semi-enclosed bay with significant port infrastructure nearby, including breakwaters and marina facilities. Wind reliability is notably low at 5.1%, which presents the primary limitation. Side-shore conditions occur with easterly winds, though these are infrequent. The spot suits beginners and early-intermediate kiters seeking mellow, forgiving conditions with minimal crowd. Water temperatures average 15.8°C, requiring seasonal protection. Key considerations include tidal range impacts on water depth and spacing, proximity to active port traffic requiring awareness of vessel movements, and limited wind windows throughout the year. The shallow, protected conditions make this ideal for skill development rather than progression to more demanding techniques.