Niyodo Rivermouth is Shikoku's heavy-water gem, a challenging rivermouth break that features fast, powerful right-handers when the sandbanks set up properly. The Niyodo River is famous for having some of Japan's clearest water, and when solid typhoon swells arrive, the rivermouth produces world-class cylinders. Smaller swells mellow it out for longboarding in summer, but when it's pumping, this is serious wave riding.
Water temp
24°C
Wetsuit
Boardshorts / Rashguard
Difficulty
7/10
Crowd level
4/10
👥 Spring Break (Mar 25 – Apr 6) — expect extra crowds
Access: Car essential. Outside Kochi city.
Peak: Aug-Nov
Secondary: Jun, Jul
Needs solid swell to break properly. Summer logs possible.