Kaifu Rivermouth surfForecast / Shikoku / Japan

information circle16 Day Weather and Surf, issued 8 pm Monday 01 Jun 2026 JST
Forecast update in hr  min  s Forecast update imminent
Kaifu Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kaifu Rivermouth sea temperature is
22.5° C
(Which is normal for this time of year)

Kaifu Rivermouth surf forecast from 1 Jun 2026:

  • Best quality surf: Wednesday 3 Jun, 9AM (local time) - 13ft (4.0m), 13s period, SSW swell with offshore winds.
  • Most powerful swell: Wednesday 3 Jun, 3AM (local time) - 18ft (5.5m), 15s period, SSW swell with 13,547 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 3 Jun, 9AM (local time) - 13ft (4.0m), 13s period with SSW swell.

Best Forecast Surf Conditions for Kaifu Rivermouth this week:

The surf forecast for Kaifu Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jun 03) at 9AM. The primary swell is predicted to be 4.0m and 13s period with a secondary swell of 2.3m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Kaifu Rivermouth in the next 16 days are 5.5m 15s and forecast to arrive on Wednesday (Jun 03) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 6s period and expected on Wednesday (Jun 03) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Wed 3rd Jun)13ft (4.0m) 13s
Best Surf 9AM (Wed 3rd Jun)13ft (4.0m) 13s
Most Powerful 3AM (Wed 3rd Jun)18ft (5.5m) 15s

Table - best surf conditions forecast for Kaifu Rivermouth over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 276mm), heaviest during Tue night. Warm (max 27°C on Wed afternoon, min 19°C on Wed night). Winds increasing (calm on Mon night, strong winds from the N by Tue night).

Days 5-7 Weather Summary

Heavy rain (total 33mm), heaviest during Sun morning. Warm (max 21°C on Fri afternoon, min 19°C on Thu night). Wind will be generally light.

Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Mon
8
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
4
0
0
0
5
3
2
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
S
14
2.2
S
13
1.9
SSW
14
5.5
ESE
10
4
SSW
13
1.7
SSW
11
1
SSW
9
0.9
S
8
0.7
S
8
0.6
S
7
0.3
SE
12
0.3
SE
12
0.6
S
7
0.5
S
7
1.1
SE
6
0.9
SE
6
0.6
SE
6
0.3
SE
10
0.4
SW
9
0.5
SSW
8
0.4
SSW
8
Wave Graph
Metric surfscale
Energy kJ
1645
1654
1415
5975
4954
662
177
104
55
34
24
24
33
22
88
56
20
17
21
40
25
Wind (km/h)
5
WSW
20
SE
30
ESE
40
ENE
20
NW
15
NNW
10
NNW
0
ENE
5
ENE
5
SW
5
NNE
10
ESE
10
SE
10
SSE
10
SSE
5
S
5
S
5
NE
10
N
15
NNE
10
E
glassy
on
cross-on
cross
off
cross-off
off
glassy
glassy
glassy
cross-off
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-on
High Tide
6:00AM1.68m
7:51PM1.62m
6:34AM1.67m
8:29PM1.59m
7:08AM1.63m
9:09PM1.56m
7:46AM1.58m
9:51PM1.53m
8:30AM1.51m
10:35PM1.52m
9:25AM1.43m
11:22PM1.53m
10:39AM1.36m
Low Tide
00:33AM0.98m
12:57PM0.18m
1:07AM1.00m
1:32PM0.21m
1:43AM1.02m
2:09PM0.26m
2:23AM1.04m
2:48PM0.33m
3:10AM1.04m
3:30PM0.41m
4:09AM1.02m
4:17PM0.51m
5:18AM0.96m
5:13PM0.61m
mod rain
heavy rain
heavy rain
heavy rain
rain showers
clear
part cloud
cloud
light rain
part cloud
cloud
light rain
mod rain
light rain
light rain
light rain
mod rain
mod rain
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:52
4:52
4:52
4:52
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:07
7:07
7:08
7:08
7:09
7:09
7
32
59
176
1
1
1
6
4
2
4
10
6
1
Temp °C
21
22
22
23
25
27
21
23
22
20
20
21
21
21
21
21
20
19
18
23
22
24
23
21
19
24
26
21
24
24
22
22
23
22
22
22
23
22
21
17
22
22
Swell 1
Height (m)
Direction
Period (s)
2
S
14
2.2
S
13
1.9
SSW
14
3
SSW
15
4
SSW
13
1.7
SE
10
1
SSW
9
0.9
S
8
0.7
S
8
0.6
S
7
0.4
ESE
8
0.5
S
6
0.6
S
7
0.5
S
7
0.7
SE
6
0.9
SE
6
0.6
SE
6
0.4
SE
5
0.6
ESE
5
0.5
SSW
8
0.5
ESE
6
Energy kJ
1645
1654
1415
4467
4954
569
177
104
55
34
24
20
33
22
34
56
20
10
17
40
18
Swell 2
Height (m)
Direction
Period (s)
0.4
ESE
11
0.6
S
19
2.3
SE
10
1.7
SSW
11
1
SE
8
0.4
NE
4
0.4
ESE
9
0.4
ESE
9
0.4
S
7
0.4
ESE
8
0.4
ESE
8
0.5
E
6
0.5
S
6
0.5
S
6
0.4
SSW
6
0.3
SSW
6
0.4
SW
9
0.4
ESE
5
0.4
SSW
8
Energy kJ
45
254
1120
662
138
5
27
26
14
24
21
19
20
22
13
8
21
11
25
Swell 3
Height (m)
Direction
Period (s)
0.3
ESE
9
2.2
N
8
0.3
NNE
6
0.2
NNE
6
0.3
ESE
9
0.1
SE
11
0.1
SE
11
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
ESE
8
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.3
SE
10
0.3
S
6
0.2
ESE
10
0.3
S
7
Energy kJ
17
659
8
4
17
5
5
21
21
22
11
19
19
18
17
7
10
8
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
10
2.3
SE
7
5.5
ESE
10
1.5
N
8
1.1
N
6
0.9
N
5
0.8
N
4
1.1
SE
6
0.5
NE
3
0.6
NE
4
0.4
NNE
2
0.5
NE
4
0.4
NE
4
Energy kJ
26
494
5975
294
80
40
25
88
5
9
2
7
5
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
2
5
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
371
371
477
0
0
0
0
0
2
2
40
23
23
6
6
10
286
40
2
40
Best forecast wave conditions in Shikoku
Rating
(10 max)
4
5
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
4
2
5
3
2
1
1
1
1
1
1
2
1
1
3
3
1
1
1
Header Global
Rating
(10 max)
4
5
4
4
5
4
5
5
5
5
5
4
9
8
8
8
9
8
9
9
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Kaifu Rivermouth Surf forecast

The above surf forecast table for Kaifu Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kaifu Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Kaifu Rivermouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kaifu Rivermouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Kaifu Rivermouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Kaifu Rivermouth is 40 km (25 miles) from Muroto. If you plan a holiday in Shikoku, look for hotels and other accommodation in Muroto. Muroto has rooms for a wide range of budgets as well as car hire and transport links.

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