Shishikui Beach (Kaiyo)

Shishikui Beach (Kaiyo) is an exposed Pacific beach break known for generally reliable surfing conditions in Shikoku. The wave setup commonly provides both left and right-hand waves, with quality improving when the swell arrives from the east to east-southeast and the wind comes from the north-northwest/NW offshore directions. Low tide is repeatedly highlighted as a key factor for getting the best on-the-beach shape. For smaller days, the surf is often described as soft and rolling (a good match for less aggressive progression). As swell builds—particularly during the typhoon season—conditions can become more powerful, with hollow/wilder characteristics reported during larger systems. Sources also note that the break can sometimes close out on very large swells, depending on sandbar behavior. Wind reliability is described as quite reliable by one source, with typical usable wind reported around 10–20 knots. Offshore NW/N-NW winds are emphasized for grooming the waves; by contrast, east winds may make conditions choppier. Seasonal peaks are associated with the period leading into and including typhoon activity, with best months most often cited around September and October in addition to a broader summer-to-autumn window. Safety-wise, the beach can attract crowds—especially on weekends—and rip currents are a notable hazard, particularly near the river mouth and during larger swells or stormy conditions. Swimming-area restrictions during July–August may limit where you can surf, and lifeguards are only present seasonally at designated areas.