Tyoushi River Mouth

Tyoushi River Mouth is a river-mouth surf break on the Kii Peninsula (Kii Hantō) in Wakayama Prefecture, Japan. It’s the kind of spot that can be very good when local sandbars and river outflow line up, offering peelers and occasionally punchier waves near the mouth.

What it’s like

• Wave type: River mouth / sandbar break
• Conditions: Best after a good swell and with the right tide and river-mouth formation
• Shape: Can produce rippable peaks and short, fun walls; quality depends a lot on shifting sand
• Crowd: Usually less famous than Japan’s premier points and beach breaks, so it can feel quieter, though local awareness is always important

Best in

• Swell direction: Typically works best with swell that can enter the river-mouth opening cleanly
• Wind: Offshore or light cross-offshore is ideal
• Tide: Often tide-sensitive, with mid-tide or a specific incoming/outgoing stage depending on sandbar setup

Things to know

• Changing conditions: Like many river-mouth breaks, it can change shape often after storms, floods, and seasonal sand movement
• Hazards: Currents at the river mouth, shifting banks, and debris after heavy rain
• Local etiquette: Be respectful of local surfers and any fishing or river activity nearby

General vibe

Tyoushi River Mouth is the sort of spot surfers check when conditions are promising but not necessarily perfect—capable of fun, clean waves when the sand and swell cooperate, and often best understood by watching it over time.