Beach
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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
24
Poor
0.6m
@9s
4km/h
Fri
1
12
Poor
1.1m
@9s
18km/h
Sat
2
5
Poor
0.6m
@7s
6km/h
+7
Unlock

Today's Conditions

Swell
0.6m
SE(130°)
Score: 2/25
Period
9s
Short period / windswell
Score: 4/25
Wind
4km/h
NNE(28°)
Score: 25/25
Weather
14°C
1.5mm89%
Windswell Component
0.5mENE@2s
Secondary Swell
0.2mESE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 2 km/h NNE|PM: 5 km/h N
Lighter winds early (2 km/h)
Tide at 10am (-0.6m)

Location & Conditions

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

Tide Times

4:15 am
High tide - 0.88m
10:44 am
Low tide - -0.57m
5:07 pm
High tide - 0.92m
Times shown in spot-local time.

Strike Score Breakdown

24
Poor
Components
Swell Direction13/25
Swell Size2/25
Swell Period4/25
Wind25/25
Raw Score44/100
Adjustments
🌊💨 Windswell-5
⚠️ Weak Component-5
📉 Undersized Swell-10
🚫 Undersized Capmax 30
Adjusted Score24/100
Confidence
Multiplier×1.00
Final Score24
🌊💨 Windswell

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

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