Kainokawa (Tosashimizu)

Kainokawa (Tosashimizu) is a left-hand point break that’s described as powerful and fun when it’s working. It’s typically associated with larger, south-to-south-east swell energy (often typhoon-driven in late summer and early autumn), and the wave can hold up well once formed. The break setup is notably rocky. Access is from a boulder-strewn shoreline, with careful navigation required due to large boulders, sharp rocks, and sea urchins. Hazards are a core part of the experience here, and the spot is also described as having strong currents during larger swells—rip currents may form along the point. Wind can strongly affect wave face quality. Offshore winds from the north and north-west are described as grooming the wave, while wind reliability is reported as low overall. For planning, the spot’s best betting window is reported as August through October (with the wider peak season also stated as July to October), when swell and winds are more likely to align. Local guidance emphasizes preparation and community etiquette: check the wave from the road before committing, use a car for practical access, and respect the lineup by waiting your turn. There is no lifeguard presence reported at the spot, and entry during extreme weather/typhoons may be restricted; no designated swimming area is also noted.