Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 2 am Sunday 26 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
19.4° 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 9AM is: 3.0m 8s primary swell from a East-southeast direction (forecast issued at 02:00am April 26). The wind direction is predicted to be cross-offshore and the swell rating is 11.

Time (JST) & DateWave HeightWave Period
Morning (26 Apr)10ft (3.0m)8s
Afternoon (26 Apr)10ft (3.0m)9s
Evening (26 Apr)10ft (3.0m)8s

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 61mm), heaviest during Sun night. Warm (max 22°C on Mon morning, min 14°C on Sun night). Wind will be generally light.

Sunday
26
Monday
27
Tuesday
28
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)
3
3
4
!
!
!
!
!
3
2
2
2
1
0
0
1
1
1
1
0
0
0
0
0
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>
Wave
Height (m)
Direction
Period (s)
2.4
ESE
9
2.3
ESE
10
2.4
ESE
10
3
ESE
8
3
ESE
8
3
ESE
9
3
ESE
8
3
ESE
8
2.5
ESE
8
1.9
ESE
8
1.5
ESE
8
1.1
ESE
8
1
ESE
7
0.8
ESE
7
0.7
ESE
7
0.6
E
7
0.6
E
7
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
Wave Graph
Metric surfscale
Energy kJ
979
940
1044
1201
1366
1398
1390
1384
887
456
250
143
117
73
57
40
39
27
27
23
23
22
22
22
Wind (km/h)
10
NNE
5
NNE
10
ENE
10
ENE
20
E
20
E
20
E
15
E
10
NNE
10
NW
10
NNW
10
NNW
5
SSE
10
SSE
5
SE
5
NNE
5
NNE
5
NNE
5
N
0
WSW
10
S
5
S
0
SSE
5
NE
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
off
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
off
cross-off
off
glassy
glassy
on
on
glassy
cross-off
High Tide
2:53AM1.53m
2:14PM1.42m
3:30AM1.59m
3:24PM1.52m
3:59AM1.65m
4:15PM1.62m
Low Tide
8:49AM0.97m
8:48PM0.56m
9:35AM0.78m
9:39PM0.57m
10:10AM0.61m
part cloud
cloud
light rain
light rain
cloud
cloud
light rain
heavy rain
heavy rain
clear
clear
cloud
clear
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:22
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:44
6:45
1
1
3
17
40
Temp °C
16
16
16
17
18
18
17
16
16
15
14
19
22
20
19
17
16
16
16
19
20
21
20
19
15
16
16
17
15
15
14
15
15
14
13
18
22
19
20
18
16
16
16
20
20
22
22
20
Swell 1
Height (m)
Direction
Period (s)
0.1
SW
7
0.1
SW
7
0.1
SE
13
0.1
SE
13
2.5
ESE
8
1.9
ESE
8
1.5
ESE
8
1.1
ESE
8
1
ESE
7
0.8
ESE
7
0.7
ESE
7
0.6
E
7
0.6
E
7
0.5
E
7
0.5
E
7
0.4
ESE
7
0.4
ESE
7
0.4
ESE
7
0.3
ESE
7
0.3
E
7
Energy kJ
2
2
7
7
887
456
250
143
117
73
57
40
39
27
27
18
18
18
11
10
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
7
0.1
SE
13
0.1
SE
13
0.6
S
6
0.8
S
6
0.7
S
6
0.6
S
6
0.6
SSW
6
0.5
S
6
0.5
SSW
6
0.5
S
6
0.4
SW
6
0.3
SSW
5
0.2
SSW
5
0.3
SE
12
0.3
SE
12
0.3
SE
12
Energy kJ
2
7
7
24
49
39
28
29
18
19
16
8
5
3
22
22
22
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
13
0.1
SE
13
0.2
ESE
13
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.2
ESE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.2
SSE
5
0.1
SE
5
0.1
E
10
Energy kJ
7
7
16
23
23
23
23
14
23
23
23
23
2
1
2
Wind waves
Height (m)
Direction
Period (s)
2.4
ESE
9
2.3
ESE
10
2.4
ESE
10
3
ESE
8
3
ESE
8
3
ESE
9
3
ESE
8
3
ESE
8
0.2
NNW
2
0.3
E
2
0.2
ENE
4
0.4
E
3
0.2
ENE
3
0.4
SW
5
0.4
SSW
3
0.6
SSW
4
Energy kJ
979
940
1044
1201
1366
1398
1390
1384
1
1
2
3
1
6
4
10
Nearest Offshore or Glassy
Rating
(10 max)
3
3
4
2
2
3
2
2
3
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
0
0
9
224
224
224
224
0
0
0
0
0
55
51
0
0
0
0
233
283
647
233
1505
Best forecast wave conditions in Shikoku
Rating
(10 max)
3
3
4
2
3
2
2
2
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
3
3
4
4
3
3
3
3
3
2
2
2
1
1
2
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
4
5
5
8
5
7
6
5
7
7
9
9
8
7
5
6
6
6
5
5
5
5
5
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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