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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
Today
30
15
Poor
0.6m
@9s
6km/h
Tue
31
52
Fair
2.8m
@10s
12km/h
Wed
1
44
Poor
1.1m
@9s
4km/h
+7
Unlock

Today's Conditions

Swell
0.6m
ESE(117°)
Score: 2/25
Period
9s
Short period / windswell
Score: 4/25
Wind
6km/h
SE(126°)
Score: 16/25
Weather
18°C
0.0mm40%
Windswell Component
0.1mENE@1s
Secondary Swell
0.4mSSE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 6 km/h NW|PM: 7 km/h SE
Lighter winds early (6 km/h)
Tide at 10am (-0.2m)

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

4:17 am
High tide - 0.76m
10:11 am
Low tide - -0.24m
3:58 pm
High tide - 0.77m
10:15 pm
Low tide - -0.56m
Times shown in spot-local time.

Strike Score Breakdown

15
Poor
Components
Swell Direction8/25
Swell Size2/25
Swell Period4/25
Wind16/25
Raw Score30/100
Adjustments
⚠️ Weak Component-5
📉 Undersized Swell-10
🚫 Undersized Capmax 30
Adjusted Score15/100
Confidence
Multiplier×1.00
Final Score15
👥 Spring Break

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°

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