Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 2 pm Tuesday 05 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
21.3° C
(Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Niyodo Rivermouth today?

The current surf forecast for Niyodo Rivermouth at 7PM is: 0.5m 10s primary swell from a East-southeast direction and 0.3m 6s secondary swell from a South direction (forecast issued at 02:00pm May 05). The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (05 May)--
Afternoon (05 May)1.5ft (0.5m)10s
Evening (05 May)2ft (0.6m)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 21°C on Thu morning, min 15°C on Tue night). Wind will be generally light.

Tue
5
Wednesday
6
Thursday
7
Fri
8
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
12 AM
3 AM
6 AM
9 AM
Rating
(10 max)
0
0
1
1
1
1
1
1
1
0
1
1
2
2
2
0
1
1
1
2
2
1
1
2
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
0.4
ESE
10
0.5
ESE
10
0.5
ESE
10
0.6
ESE
10
0.6
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
0.8
ESE
10
0.7
ESE
10
1.1
ESE
6
1.1
E
6
0.7
ESE
9
1.1
SE
7
0.9
ESE
9
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1
ESE
8
1
ESE
8
0.9
ESE
8
Wave Graph
Metric surfscale
Energy kJ
41
58
57
65
65
83
83
81
81
80
103
80
86
86
76
119
146
203
198
198
193
125
133
108
Wind (km/h)
10
S
10
S
5
SE
5
NE
10
NNE
5
NNE
5
NE
0
NNW
5
SE
10
SSE
5
N
5
NNW
10
N
10
N
5
NNW
5
SSW
10
S
10
SSW
5
SSE
5
NE
5
NNE
5
N
5
NE
5
SSW
on
on
glassy
glassy
off
glassy
glassy
glassy
glassy
on
glassy
off
off
off
glassy
on
on
on
glassy
cross-off
glassy
glassy
glassy
glassy
High Tide
8:33PM1.57m
7:21AM1.64m
9:17PM1.49m
7:53AM1.57m
10:12PM1.42m
8:31AM1.48m
Low Tide
1:49AM1.00m
2:21PM0.34m
2:22AM1.06m
3:03PM0.44m
3:07AM1.12m
clear
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:11
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:51
6:52
6:52
Temp °C
18
18
17
15
15
16
16
18
19
19
17
16
16
16
16
20
21
21
20
19
18
18
18
20
15
16
16
14
13
15
15
17
18
18
18
15
15
15
16
20
21
21
22
20
19
19
20
22
Swell 1
Height (m)
Direction
Period (s)
0.4
ESE
10
0.5
ESE
10
0.5
ESE
10
0.6
ESE
10
0.6
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
0.8
ESE
10
0.7
SE
5
0.9
ESE
6
0.9
ESE
6
0.9
ESE
6
1.1
SE
7
0.9
ESE
9
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1
ESE
8
1
ESE
8
0.9
ESE
8
Energy kJ
41
58
57
65
65
83
83
81
81
80
103
27
51
60
57
119
146
203
198
198
193
125
133
108
Swell 2
Height (m)
Direction
Period (s)
0.3
SSE
6
0.3
S
6
0.3
S
6
0.2
S
6
0.2
S
6
0.1
S
5
0.1
W
7
0.1
S
5
0.7
ESE
10
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.9
SE
8
0.2
ESE
11
0.4
S
6
0.5
S
7
0.5
S
7
0.7
S
7
Energy kJ
8
6
6
2
2
1
1
1
80
78
76
76
75
82
12
13
24
22
45
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
6
0.2
E
3
0.1
W
7
0.2
SSE
8
0.5
SSE
8
0.4
ESE
11
0.4
SE
11
0.4
ESE
11
Energy kJ
4
1
1
6
32
46
31
47
Wind waves
Height (m)
Direction
Period (s)
0.2
ENE
3
0.4
NE
4
0.2
ESE
3
0.6
ESE
4
0.6
SE
4
0.6
ESE
4
0.6
SE
5
0.8
SE
5
0.8
SE
5
0.5
E
6
1.1
ESE
6
1.1
E
6
1
E
6
0.9
SSW
6
Energy kJ
1
3
1
10
14
12
17
29
29
18
86
86
75
50
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
1
1
2
2
1
1
2
Distance (km)
85
51
0
0
0
0
0
0
0
29
0
0
0
0
0
51
51
58
0
0
0
0
0
0
Best forecast wave conditions in Shikoku
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
1
1
2
2
1
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
1
2
2
1
1
2
Header Global
Rating
(10 max)
5
5
5
5
5
4
5
5
5
9
9
7
6
6
5
8
5
6
5
5
5
6
6
5
  • 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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