Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 8 am Monday 27 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
19.9° 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 12PM is: 1.0m 8s primary swell from a East-southeast direction and 0.5m 6s secondary swell from a South direction (forecast issued at 08:00am April 27). The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (27 Apr)3.5ft (1.1m)8s
Afternoon (27 Apr)3ft (0.9m)7s
Evening (27 Apr)2.5ft (0.7m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Wed afternoon. Warm (max 22°C on Mon morning, min 13°C on Wed night). Wind will be generally light.

Monday
27
Tuesday
28
Wednesday
29
Thu
30
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)
2
1
1
0
0
1
1
1
1
0
0
0
0
1
1
0
0
0
0
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>
<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)
1.4
ESE
8
1.1
ESE
8
1
ESE
8
0.9
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
0.2
ESE
12
0.2
ESE
12
0.9
SSW
5
0.7
SSW
5
0.7
SSW
6
0.8
SSW
6
0.7
SSW
6
0.6
SSW
6
0.5
SSW
5
0.4
SSW
5
0.2
E
10
0.2
E
10
0.2
E
10
Wave Graph
Metric surfscale
Energy kJ
210
147
120
97
71
54
38
39
27
23
23
14
14
36
29
31
38
35
25
17
9
8
8
7
Wind (km/h)
10
NW
10
NNW
5
W
10
SW
10
ESE
5
NNE
5
N
5
N
5
N
5
SSW
5
S
10
S
5
SE
5
NNE
5
NNW
5
NNW
10
N
10
NNW
10
NNW
10
NW
15
N
10
N
10
N
10
N
cross-off
cross-off
cross-off
cross-on
cross
cross-off
off
off
glassy
on
on
on
glassy
cross-off
off
off
off
cross-off
off
cross-off
off
off
off
off
High Tide
3:30AM1.59m
3:24PM1.52m
3:59AM1.65m
4:15PM1.62m
4:25AM1.69m
4:58PM1.70m
Low Tide
9:35AM0.78m
9:39PM0.57m
10:10AM0.61m
10:19PM0.59m
10:42AM0.45m
10:54PM0.63m
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:20
5:18
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:45
6:45
6:45
1
Temp °C
15
19
22
22
21
17
16
16
16
19
20
21
20
18
18
17
16
18
17
15
14
14
13
13
14
17
21
21
21
17
15
15
16
18
20
21
22
19
18
17
15
16
14
14
12
12
11
11
Swell 1
Height (m)
Direction
Period (s)
1.4
ESE
8
1.1
ESE
8
1
ESE
8
0.9
ESE
7
0.8
ESE
7
0.4
SSW
6
0.6
E
7
0.6
E
7
0.5
E
7
0.4
ESE
7
0.3
E
8
0.3
E
8
0.3
E
8
0.6
SSW
5
0.7
SSW
5
0.7
SSW
6
0.8
SSW
6
0.7
SSW
6
0.6
SSW
6
0.5
SSW
5
0.4
SSW
5
0.3
SSW
5
0.2
E
10
0.2
E
10
Energy kJ
210
147
120
97
71
12
38
39
27
18
10
10
10
17
29
31
38
35
25
17
9
5
8
7
Swell 2
Height (m)
Direction
Period (s)
0.8
S
6
0.6
S
6
0.5
S
6
0.3
SE
12
0.4
SSW
3
0.3
SE
12
0.4
SW
5
0.4
SW
5
0.3
SSW
5
0.3
SSW
5
0.3
SE
12
0.2
ESE
12
0.2
ESE
12
0.3
E
8
0.3
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
7
0.2
E
4
0.2
E
4
0.1
SE
6
0.2
SSW
5
0.2
SSE
6
Energy kJ
50
25
16
23
4
23
7
7
5
5
23
14
14
10
10
5
4
4
4
1
2
1
2
3
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
13
0.2
ESE
13
0.3
SE
12
0.2
ESE
12
0.3
SSW
6
0.2
SSE
6
0.2
S
6
0.2
ESE
12
0.3
SE
12
0.3
SE
12
0.2
SSW
5
0.1
SE
6
0.2
SSE
6
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.2
E
8
0.2
E
8
0.2
E
10
0.1
SE
11
0.1
SE
11
Energy kJ
7
16
23
14
6
3
2
14
23
23
2
1
3
14
13
13
5
5
5
4
4
8
5
5
Wind waves
Height (m)
Direction
Period (s)
0.4
NW
3
0.4
NW
3
0.5
SSW
6
0.5
SW
4
0.7
ESE
7
0.4
ESE
3
0.3
SSW
4
0.5
SSW
4
0.9
SSW
5
0.4
NW
3
0.2
WNW
3
0.2
WNW
3
0.3
NNW
2
0.2
NNW
2
Energy kJ
2
3
18
6
54
3
3
11
36
2
1
1
1
1
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
0
0
58
29
0
0
0
0
283
279
233
229
0
0
29
29
344
51
338
535
1809
949
432
Best forecast wave conditions in Shikoku
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
2
1
1
1
Header Global
Rating
(10 max)
9
9
8
7
6
6
6
6
5
5
5
5
5
5
5
5
8
9
9
8
7
7
9
7
  • 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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