Kaifu Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 8 pm Sunday 17 May 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
20.9° C
(Which is normal for this time of year)

How big are the waves at Kaifu Rivermouth today?

The current surf forecast for Kaifu Rivermouth at 1AM is: 0.7m 9s primary swell from a East-southeast direction and 0.3m 12s secondary swell from a Southeast direction (forecast issued at 08:00pm May 17). The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (18 May)2.5ft (0.7m)9s
Afternoon (18 May)2.5ft (0.8m)9s
Evening (18 May)2ft (0.6m)9s

Table - waves today at Kaifu Rivermouth. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 18mm), heaviest on Tue night. Warm (max 25°C on Mon morning, min 18°C on Mon night). Wind will be generally light.

Sun
17
Monday
18
Tuesday
19
Wednesday
20
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
1
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.8
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.8
ESE
9
0.8
ESE
9
0.6
ESE
9
0.7
ESE
10
0.7
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.9
SE
10
0.9
SE
11
0.8
ESE
11
0.8
ESE
11
0.8
ESE
11
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
Wave Graph
Metric surfscale
Energy kJ
88
67
68
70
71
71
70
86
88
61
88
90
130
133
135
160
163
143
143
143
160
157
151
148
Wind (km/h)
5
SW
10
WNW
5
NW
5
WNW
5
NW
5
SE
10
SSE
10
SSE
5
S
5
WSW
5
WNW
5
WNW
5
NW
5
SSE
10
SSE
10
SSE
10
S
5
SE
5
NE
5
N
5
N
5
NNE
5
ENE
10
ENE
glassy
off
glassy
off
off
glassy
on
on
cross-on
glassy
glassy
glassy
glassy
on
cross-on
cross-on
cross-on
on
cross
cross-off
cross-off
cross-off
cross
cross-on
High Tide
6:52PM1.85m
5:51AM1.87m
7:42PM1.81m
6:32AM1.85m
8:35PM1.73m
7:15AM1.79m
Low Tide
00:19AM0.89m
12:46PM-0.12m
1:03AM0.96m
1:34PM-0.08m
1:48AM1.03m
2:24PM0.03m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
light rain
light rain
light rain
mod rain
light rain
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:00
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:55
6:57
6:58
6:59
1
2
2
6
3
2
1
Temp °C
23
21
20
19
19
24
25
24
22
20
19
18
18
22
24
24
22
20
19
20
20
21
21
22
24
21
20
18
18
24
24
24
23
22
20
19
18
22
24
24
24
22
21
22
22
24
24
24
Swell 1
Height (m)
Direction
Period (s)
0.8
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.8
ESE
9
0.8
ESE
9
0.6
ESE
9
0.7
ESE
10
0.7
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.9
SE
10
0.9
SE
11
0.8
ESE
11
0.8
ESE
11
0.8
ESE
11
0.9
SE
10
0.9
SSE
8
1
S
8
1.1
S
7
Energy kJ
88
67
68
70
71
71
70
86
88
61
88
90
130
133
135
160
163
143
143
143
160
109
127
110
Swell 2
Height (m)
Direction
Period (s)
0.3
SE
11
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.2
ESE
12
0.1
SE
10
0.3
SE
12
0.4
SE
4
0.4
SE
4
0.4
SE
4
0.4
SE
10
0.6
SSE
4
0.4
SSE
6
0.5
SSE
7
0.7
SSE
7
0.8
SSE
8
0.9
SE
10
0.9
SE
10
0.9
SE
10
Energy kJ
19
23
22
24
23
23
14
4
21
4
4
4
27
13
16
26
38
92
157
151
148
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
12
0.3
ESE
10
0.4
SE
11
0.3
ESE
10
0.1
S
9
0.2
S
9
0.3
S
9
Energy kJ
4
4
4
4
6
19
32
21
2
6
14
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
3
0.5
SE
4
0.6
SSE
6
1.3
S
6
1.3
S
6
Energy kJ
4
7
27
124
128
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
2
2
Distance (km)
0
0
0
0
0
0
461
6
6
0
0
0
0
6
6
6
6
10
2
0
0
0
25
25
Best forecast wave conditions in Shikoku
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
7
4
8
6
4
4
5
6
5
4
5
4
5
4
4
4
4
4
4
4
4
4
4
4
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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