Niyodo Rivermouth
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.
Niyodo Rivermouth surf forecast
Model forecast for swell, wind and tide.
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Spot Details
CustomizeCustomize this spotSwell Requirements
- Optimal direction
- SSE (150°)
- Direction range
- 110° - 190°
- Size range
- 1.2m - 3.5m
- Ideal size
- 2.2m - 2.9m
- Height multiplier
- 0.92×
- Ideal period
- 14s+
Wind Requirements
- Optimal direction
- N (350°)
- Offshore range
- 310° - 30°
Tide Requirements
- Optimal tide
- mid
- Optimal range
- 0.4m - 1.3m
Water temp
24°C
Wetsuit
Boardshorts / Rashguard
Difficulty
7/10
Crowd level
4/10
Access: Car essential. Outside Kochi city.
Frequently Asked Questions
What kind of wave is Niyodo Rivermouth?
Niyodo Rivermouth is a beach break in Kochi, Japan, that mostly breaks right.
What swell works best at Niyodo Rivermouth?
Niyodo Rivermouth picks up swell from the ESE round to the S, and it's best when it's coming straight out of the SSE. It starts working at around 1.2m and handles up to about 3.5m, with the sweet spot around 2.2 to 2.9m. Period matters too: aim for 14s or longer, as anything under 10s tends to be weak. These are the numbers our scoring uses, so treat them as a guide rather than a promise.
What wind is offshore at Niyodo Rivermouth?
A N wind is dead offshore at Niyodo Rivermouth, and anything from the NW round to the NNE keeps it clean. The morning is typically the best window, roughly 5am to 10am. Light winds from other directions can still be fine; strong offshores can make it hard to get into waves.
What tide is best at Niyodo Rivermouth?
Niyodo Rivermouth is at its best around mid tide, roughly 0.4m to 1.3m on the local chart.
When is the best time of year to surf Niyodo Rivermouth?
The most reliable run of swell at Niyodo Rivermouth comes Aug to Nov. There's a second window in Jun to Jul too. Needs solid swell to break properly. Summer logs possible.
How cold is the water at Niyodo Rivermouth?
The water at Niyodo Rivermouth averages around 24°C, so boardshorts or a rashguard will do. It shifts a few degrees through the year, so check the season before you pack.
Is Niyodo Rivermouth good for beginners?
Not really. It's rated 7/10 for difficulty and suits experienced surfers. Expect a moderate crowd (4/10) when it's on. Shifting peaks make takeoff tricky. Respect local surfers.
How do I get to Niyodo Rivermouth?
The nearest airport on our list is KCZ, then it's roughly a 30-minute drive. Car essential. Outside Kochi city.
Best Season
Peak: Aug-Nov
Secondary: Jun, Jul
Needs solid swell to break properly. Summer logs possible.