Kemigawahama is a shallow bay area located in the Tokyo Bay region of Japan, characterized by extensive flatwater and minimal wave development. The coastline orientation faces northeast toward the bay's interior, with the water body enclosed by industrial development and port infrastructure. This spot is essentially a protected lagoon environment with extremely limited fetch and wave generation due to its sheltered position within Tokyo Bay.
The spot is notable primarily as a beginner-friendly flatwater location for light wind practice, though actual conditions are severely constrained. With average wind speeds of only 5.4 knots and wind reliability of just 1.5%, sessions are infrequent and sporadic. Wave heights average 0.29m, indicating negligible swell. Best wind direction for side-shore conditions is from the northwest (315°), parallel to the northeast-facing shoreline.
This location suits only absolute beginners seeking calm water practice in a protected environment. However, the extremely low wind reliability makes it unsuitable as a primary training spot. Kiters should be aware of shallow water depths, industrial boat traffic in nearby channels, seawall obstacles, and potential mudflat exposure at low tide. Water quality considerations related to bay proximity should also be evaluated before sessions.