Overview
Kaifu River is one of the best quality rivermouth waves in Japan, tucked into Tokushima about 45 minutes from Cape Muroto in the scenic Ana Quasi national coastal park. On the handful of days a season it truly fires, the right-hand river mouth peak throws up seriously hollow, powerful walls over a boulder bottom. There's a short left off the peak as well, and the neighbouring beach can get good at the same time.
When It Works
The wave draws swell from east through south (E-S), and it comes alive on a moderate southeast (SE) swell. It's usable from 1.2 m / 4 ft to 3.7 m / 12 ft, so it wants a proper pulse of size to start standing up. Consistency is the catch: it's somewhat inconsistent and only really turns on for a few days each season, so timing a swell window matters here.
Wind and Tide
Look for northwest (NW) offshore wind, with a broad westerly wind window keeping the faces clean. It works through low and mid tide, and a rising tide is generally the better call.
Local Tips
This is a wave for expert surfers only. The rips are heavy, the boulders sit shallow, the tetrapods are close, and the current runs devilishly fast. When it's on it's guaranteed busy, and Sundays especially draw a heavy crowd, so expect plenty of company in the lineup on the good days.
Access
Steps make getting down to the water easy. For parking there's a car park with free parking, along with paid and roadside options nearby.
