Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 2 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
28.2°C
1.8° 

Niyodo Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Niyodo Rivermouth today (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 13ft (4.0m), 13s period with ESE swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 13ft (4.0m), 13s period with ESE swell.
  • Evening surf: Evening surf (20 Sep, local time) - 11ft (3.5m), 13s period with ESE swell.

The current surf forecast for Niyodo Rivermouth at 8AM is: 4.0m 13s primary swell from a East-southeast direction (forecast issued at 02:00am September 20). The wind direction is predicted to be offshore and the swell rating is 11.

Time (JST) & DateWave HeightWave Period
Morning (20 Sep)13ft (4.0m)13s
Afternoon (20 Sep)13ft (4.0m)13s
Evening (20 Sep)11ft (3.5m)13s

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


Short Range Forecast

Mostly dry. Warm (max 29°C on Sun morning, min 18°C on Tue night). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
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)
!
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4
4
3
2
2
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
ESE
14
4
ESE
14
4
ESE
13
4
ESE
13
4
ESE
13
4
ESE
13
4
ESE
13
3.5
ESE
13
3.5
ESE
13
3.5
ESE
13
3.5
ESE
13
4
ESE
13
3.5
ESE
13
3.5
ESE
13
3
ESE
12
2.5
ESE
12
2
E
12
1.6
E
11
1.3
E
11
1
E
10
0.7
E
10
0.5
E
10
0.4
E
10
0.3
E
10
Wave Graph
Metric surfscale
Energy kJ
5502
5421
5105
4954
5010
5010
4805
4152
4087
4496
4427
4642
4496
4012
3199
1978
1098
617
389
218
96
47
29
17
Wind (km/h)
10
N
10
N
15
N
15
N
15
N
20
NNW
15
N
15
N
15
N
20
N
20
NNW
25
NNW
25
NNW
20
NNW
20
NNW
20
NNW
15
N
15
NNW
15
NNW
15
N
5
N
0
N
15
N
15
N
Wind State
off
off
off
off
off
off
off
off
off
off
off
off
cross-off
off
off
off
off
off
off
off
off
glassy
off
off
High Tide
9:22PM1.39m
4:06PM1.33m
00:05AM1.30m
4:10PM1.43m
2:22AM1.37m
4:26PM1.53m
Low Tide
6:47AM0.71m
8:43PM1.27m
8:31AM0.64m
9:35PM1.14m
9:26AM0.53m
cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:04
6:02
 mm
Temp °C
25
24
24
27
29
27
25
24
24
24
23
25
25
24
24
24
23
22
21
24
28
28
24
21
Feels °C
28
26
26
28
30
27
27
25
24
24
23
25
24
24
24
24
23
22
20
22
28
30
24
21
  • 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
How to use the Wavefinder 

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