Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 8 am Saturday 25 Apr 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
19.5° C
(Which is normal for this time of year)

How big are the waves at Niyodo Rivermouth today?

The current surf forecast for Niyodo Rivermouth at 3PM is: 1.9m 10s primary swell from a East-southeast direction and 0.3m 6s secondary swell from a South direction (forecast issued at 08:00am April 25). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (25 Apr)7ft (2.1m)8s
Afternoon (25 Apr)6ft (1.9m)10s
Evening (25 Apr)8ft (2.5m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 42mm), heaviest during Sun night. Warm (max 21°C on Mon morning, min 13°C on Sun night). Wind will be generally light.

Saturday
25
Sunday
26
Monday
27
Tue
28
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
12 AM
3 AM
Rating
(10 max)
3
4
3
2
2
4
4
4
4
1
1
3
3
3
3
3
2
2
1
0
1
1
1
1
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)
1.9
E
9
2.1
E
8
2
E
9
1.9
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
9
2.5
ESE
8
2.5
ESE
8
2.5
ESE
8
2.5
ESE
8
2.5
ESE
8
2.1
ESE
8
1.7
ESE
8
1.4
ESE
8
1.2
ESE
8
1.1
E
8
0.9
ESE
8
0.8
E
8
0.7
E
8
0.6
E
8
Wave Graph
Metric surfscale
Energy kJ
573
626
613
681
1129
1170
1106
1133
1106
981
932
932
932
939
827
575
373
232
173
142
96
74
57
41
Wind (km/h)
5
N
5
W
5
S
5
SSE
15
ESE
10
ENE
10
ENE
10
ENE
10
ENE
15
E
15
E
15
NE
15
NE
10
NW
10
NNW
10
NW
10
N
10
NNW
5
SSE
10
SSE
5
S
5
NE
5
NNE
5
NNE
off
glassy
on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
cross-on
cross-on
glassy
cross-off
cross-off
off
High Tide
12:24PM1.36m
2:53AM1.53m
2:14PM1.42m
3:30AM1.59m
3:24PM1.52m
Low Tide
7:33AM1.14m
7:39PM0.55m
8:49AM0.97m
8:48PM0.56m
9:35AM0.78m
9:39PM0.57m
cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
mod rain
mod rain
heavy rain
clear
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:22
5:22
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:43
6:44
6:45
2
7
7
26
Temp °C
13
17
19
19
18
16
17
16
16
18
17
16
15
15
15
14
13
19
21
20
19
17
16
16
11
15
17
18
16
15
16
15
14
15
15
14
13
14
14
13
11
18
20
19
19
17
16
16
Swell 1
Height (m)
Direction
Period (s)
1.4
E
9
1.6
E
9
1.6
E
9
0.3
S
6
0.2
S
6
0.2
S
6
0.1
S
7
0.1
S
7
0.1
SW
7
0.1
SE
13
0.1
SE
13
2.5
ESE
8
2.1
ESE
8
1.7
ESE
8
1.4
ESE
8
1.2
ESE
8
1.1
E
8
0.9
ESE
8
0.8
E
8
0.7
E
8
0.6
E
8
Energy kJ
325
402
393
7
3
3
1
1
2
7
7
827
575
373
232
173
142
96
74
57
41
Swell 2
Height (m)
Direction
Period (s)
0.4
SSE
7
0.4
S
7
0.3
S
7
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.4
S
6
0.6
S
6
0.6
S
6
0.6
S
6
0.5
S
6
0.7
SSW
6
0.5
SSW
6
Energy kJ
15
14
8
7
7
7
13
29
29
28
18
29
17
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
7
0.1
SE
12
0.1
SE
15
0.1
S
7
0.1
S
7
0.1
SE
13
0.1
SE
12
0.1
SE
12
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.3
SE
12
Energy kJ
5
6
8
1
1
7
6
6
14
14
14
23
Wind waves
Height (m)
Direction
Period (s)
1.9
E
9
2.1
E
8
2
E
9
1.9
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
10
2.5
ESE
9
2.5
ESE
8
2.5
ESE
8
2.5
ESE
8
2.5
ESE
8
0.8
SSW
6
0.4
SSW
4
0.7
SW
6
Energy kJ
573
626
613
681
1129
1170
1106
1133
1106
981
932
932
932
939
42
5
32
Nearest Offshore or Glassy
Rating
(10 max)
3
4
2
2
2
4
4
4
4
1
4
3
3
3
3
3
2
2
1
1
1
1
1
1
Distance (km)
0
0
29
183
183
0
0
0
0
585
330
0
0
0
0
0
0
0
64
183
0
0
0
0
Best forecast wave conditions in Shikoku
Rating
(10 max)
3
4
2
4
4
4
4
3
3
3
3
3
2
2
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
3
4
2
3
4
4
4
4
4
1
4
3
3
3
3
3
2
2
2
2
1
1
1
1
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
5
5
8
5
8
6
6
7
7
9
9
8
7
5
6
6
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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Niyodo Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest