Beach
right
Level 8/10

Kaifu River (Japanese Pipeline)

Kaifu, Japan
👊Localism🌀Strong rips🪨Rocks

Kaifu River is nicknamed the Japanese Pipeline, and when typhoon swells funnel into this rivermouth in southern Tokushima, the name is justified. The wave produces grinding right-hand barrels over a sandbar formed by the Kaifu River's outflow, located in the scenic Muroto-Anan Quasi-National Park. Access to the peak is reserved for experienced surfers, and localism runs deep—but those who earn respect are rewarded with some of Japan's heaviest tubes.

10-Day Forecast
Mon
22
8
Poor
0.6m
@9s
5km/h
Tue
23
23
Poor
0.6m
@10s
6km/h
Wed
24
43
Poor
1.1m
@11s
6km/h
Thu
25
40
Poor
1.5m
@9s
7km/h
Fri
26
15
Poor
1.3m
@7s
7km/h
Sat
27
37
Poor
1.1m
@10s
6km/h
Sun
28
63
Fair
1.1m
@13s
7km/h
Mon
29
21
Poor
1.1m
@8s
5km/h
Tue
30
8
Poor
0.7m
@7s
1km/h
Wed
1
17
Poor
0.7m
@7s
4km/h

Today's Conditions

Find Flights
Swell
0.6m
S(187°)
Score: 2/25
Period
9s
Short period / windswell
Score: 4/25
Wind
5km/h
SSE(153°)
Score: 18/25
Weather
24°C
0.1mm78%
Secondary Swell
0.3mSE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 5 km/h NW|PM: 6 km/h SSE
Lighter winds early (5 km/h)
Tide at 5am (0.1m)

Location & Conditions

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

Tide Times

5:21 am
Low tide - 0.10m
10:50 am
High tide - 0.62m
5:00 pm
Low tide - 0.01m
Times shown in spot-local time.

Strike Score Breakdown

8
Poor
Components
Swell Direction3/25
Swell Size2/25
Swell Period4/25
Wind18/25
Raw Score27/100
Adjustments
🌊 Tide+1
⚠️ Weak Component-10
📉 Undersized Swell-10
🚫 Undersized Capmax 30
Adjusted Score8/100
Confidence
Multiplier×1.00
Final Score8
🌊 Partly in the tide window
For real surf travel

Get the full Kaifu River (Japanese Pipeline) trip window

Pro unlocks the 10-day forecast window, unlimited alerts, and custom spot tracking that help turn a good-looking surf report into a better travel decision.

10-day window

See the trip window before flights get expensive.

Unlimited alerts

Let the app watch your score threshold for you.

Custom spots

Track the breaks that actually matter to your travel plans.

Spot Details

Swell Requirements

Optimal direction
SE (130°)
Direction range
90° - 180°
Size range
1m - 3m
Ideal size
2.4m
Height multiplier
0.92×
Ideal period
14s+

Wind Requirements

Optimal direction
NW (320°)
Offshore range
280° - 360°

Tide Requirements

Optimal tide
mid
Optimal range
0.4m - 1.4m

Water temp

23°C

Wetsuit

Springsuit / 2mm

Difficulty

8/10

Crowd level

6/10

Access: Car essential. Limited public transport.

Best Season

Peak: Jun-Nov

Secondary: Dec, Jan, Feb

Typhoon season Jun-Nov produces world-class waves.

Getting There

Airport
TKS
Drive time
90 min
Data quality
verified

Strike Log

Community Discussion