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Level 7/10

Niyodo Rivermouth

Kochi, Japan
🌀Strong rips👊Localism

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.

3-Day Forecast
Mon
16
55
Fair
1.2m
@14s
6km/h
Tue
17
44
Poor
1.0m
@14s
6km/h
Wed
18
30
Poor
0.8m
@14s
3km/h
+7
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Today's Conditions

Swell
1.2m
ESE(108°)
Score: 8/25
Period
14s
Long period groundswell
Score: 25/25
Wind
6km/h
S(178°)
Score: 16/25
Weather
12°C
0.0mm9%
Windswell Component
0.1mESE@1s
Secondary Swell
0.3mE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning

Location & Conditions

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0°45°90°135°180°225°270°315°NESW
Swell
Wind
View in OpenStreetMap
Showing forecast for today

Tide Times

4:35 am
High tide - 0.67m
10:18 am
Low tide - -0.09m
3:47 pm
High tide - 0.66m
10:22 pm
Low tide - -0.70m
Times shown in spot-local time.

Strike Score Breakdown

55
Fair
Components
Swell Direction6/25
Swell Size8/25
Swell Period25/25
Wind16/25
Raw Score55/100
Confidence
Multiplier×1.00
Final Score55

Spot Details

Swell Requirements

Optimal direction
SSE (150°)
Direction range
110° - 190°
Size range
1.2m - 3.5m
Ideal size
2.8m
Height multiplier
0.92×
Ideal period
14s+

Wind Requirements

Optimal direction
N (350°)
Offshore range
310° - 30°
Best window
morning

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

👥 Spring Break (Mar 25Apr 6) — expect extra crowds

Access: Car essential. Outside Kochi city.

Best Season

Peak: Aug-Nov

Secondary: Jun, Jul

Needs solid swell to break properly. Summer logs possible.

Getting There

Airport
KCZ
Drive time
30 min
Data quality
verified

Strike Log

Community Discussion