Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 2 am Friday 29 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Niyodo Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Niyodo Rivermouth sea temperature is
23.0° C
(Which is 1.3°C warmer than normal for this time of year)

How big are the waves at Niyodo Rivermouth today (29 May):

  • Morning surf: Morning surf (29 May, local time) - 2.5ft (0.7m), 7s period with SSW swell.
  • Afternoon surf: Afternoon surf (29 May, local time) - 1.5ft (0.4m), 8s period with E swell.
  • Evening surf: Evening surf (29 May, local time) - 1.5ft (0.5m), 10s period with E swell.

The current surf forecast for Niyodo Rivermouth at 9AM is: 0.7m 7s primary swell from a South-southwest direction and 0.5m 6s secondary swell from a South-southeast direction (forecast issued at 02:00am May 29). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (29 May)2.5ft (0.7m)7s
Afternoon (29 May)1.5ft (0.4m)8s
Evening (29 May)1.5ft (0.5m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 28°C on Fri morning, min 18°C on Fri night). Wind will be generally light.

Friday
29
Saturday
30
Sunday
31
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
6 PM
9 PM
Rating
(10 max)
1
1
1
1
1
1
0
1
1
1
1
1
0
0
1
1
1
2
2
3
1
2
3
4
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.9
S
6
0.9
S
6
0.9
SSW
6
0.7
SSW
7
0.6
SSW
7
0.4
E
8
0.4
ESE
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.6
E
12
0.6
ESE
10
0.6
E
11
0.6
ESE
11
0.7
ESE
11
0.6
S
16
0.8
S
15
1
S
14
1.3
S
13
1.4
S
13
1.5
S
13
1.5
S
12
Wave Graph
Metric surfscale
Energy kJ
68
66
68
38
39
22
33
49
47
47
46
48
98
83
89
95
107
188
294
411
609
673
736
690
Wind (km/h)
5
N
5
NNW
10
NNW
10
NNW
5
NNW
0
ESE
10
SE
5
NE
10
NNW
10
N
10
N
0
SSW
10
S
10
S
5
SSE
5
NNE
5
N
5
N
5
N
5
SSW
10
S
10
SSE
5
S
5
NE
glassy
cross-off
off
cross-off
cross-off
glassy
cross-on
glassy
off
off
off
glassy
on
on
glassy
glassy
off
off
off
glassy
on
on
glassy
glassy
High Tide
4:01AM1.64m
5:27PM1.65m
4:31AM1.67m
6:04PM1.68m
5:02AM1.68m
6:40PM1.69m
Low Tide
10:21PM0.89m
10:44AM0.30m
10:58PM0.91m
11:17AM0.23m
11:33PM0.93m
11:50AM0.19m
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:08
Temp °C
23
23
22
26
28
28
25
22
20
19
18
24
24
24
23
22
21
20
20
24
25
25
24
22
26
26
23
26
28
29
27
24
20
18
16
24
23
24
25
24
22
21
20
25
25
26
26
24
Swell 1
Height (m)
Direction
Period (s)
0.9
S
6
0.9
S
6
0.9
SSW
6
0.7
SSW
7
0.6
SSW
7
0.5
SW
6
0.4
ESE
10
0.6
SE
6
0.5
SE
6
0.5
E
10
0.5
E
10
0.5
E
10
0.6
E
12
0.6
ESE
10
0.6
E
11
0.6
ESE
11
0.7
ESE
11
0.8
ESE
11
0.8
S
15
1
S
14
1.3
S
13
1.4
S
13
1.5
S
13
1.5
S
12
Energy kJ
68
66
68
38
29
20
33
21
16
47
46
48
98
83
89
95
107
135
294
411
609
673
736
690
Swell 2
Height (m)
Direction
Period (s)
0.6
E
8
0.5
E
8
0.5
E
8
0.5
SSE
6
0.4
SSE
6
0.4
E
8
0.4
SSE
6
0.5
E
10
0.5
E
10
0.4
SSE
6
0.4
SSE
6
0.3
SSE
6
0.3
SSE
6
0.3
SSE
6
0.3
SSE
5
0.2
SSE
5
0.3
S
17
0.6
S
16
0.7
ESE
11
0.8
ESE
11
0.7
ESE
11
0.6
E
10
0.6
E
10
0.7
S
16
Energy kJ
45
34
34
21
14
22
11
49
47
13
10
6
6
6
6
3
52
188
123
135
121
80
74
264
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
9
0.3
SE
10
0.2
ESE
10
0.4
ESE
8
0.4
ESE
10
0.2
ESE
12
0.4
SW
6
0.4
SW
6
0.4
SW
6
0.3
ESE
12
0.3
ESE
12
0.3
ESE
12
0.1
SE
9
0.1
SW
6
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.2
SSE
9
0.3
SE
12
0.6
E
10
Energy kJ
22
15
9
22
39
15
10
10
10
29
28
29
3
1
3
3
3
3
8
22
74
Wind waves
Height (m)
Direction
Period (s)
0.3
NW
2
0.4
SSE
6
0.5
ESE
3
0.3
ENE
4
0.4
ENE
4
0.6
NE
4
0.2
E
3
Energy kJ
1
14
6
3
5
14
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
2
4
3
4
Distance (km)
0
0
0
0
0
0
61
0
0
0
0
0
330
51
0
0
0
0
0
0
103
51
0
0
Best forecast wave conditions in Shikoku
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
2
4
3
4
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
2
3
5
4
3
4
Header Global
Rating
(10 max)
9
7
7
7
5
6
5
5
5
4
5
5
5
5
5
5
6
8
7
7
7
7
7
6
  • 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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