Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 2 am 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
29.3° C
1.6° 

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 (09 Aug):

  • Morning surf: Morning surf (09 Aug, local time) - 6ft (1.8m), 12s period with SSW swell.
  • Afternoon surf: Afternoon surf (09 Aug, local time) - 5.5ft (1.7m), 12s period with SSW swell.
  • Evening surf: Evening surf (09 Aug, local time) - 4.5ft (1.4m), 13s period with E swell.

The current surf forecast for Niyodo Rivermouth at 8AM is: 1.8m 12s primary swell from a South-southwest direction and 1.2m 13s secondary swell from a East-southeast direction (forecast issued at 02:00am August 09). The wind direction is predicted to be glassy and the swell rating is 4.

Time (JST) & DateWave HeightWave Period
Morning (09 Aug)6ft (1.8m)12s
Afternoon (09 Aug)5.5ft (1.7m)12s
Evening (09 Aug)4.5ft (1.4m)13s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Sun morning, min 22°C on Tue night). Wind will be generally light.

Sunday
9
Monday
10
Tuesday
11
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)
4
4
4
4
2
3
4
4
4
4
3
3
2
2
3
3
3
3
3
2
0
1
1
3
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)
1.7
SSW
11
1.8
SSW
12
1.8
SSW
12
1.8
SSW
12
1.7
SSW
12
1.7
SSW
12
1.7
SSW
12
1.4
E
13
1.4
E
13
1.3
E
13
1.3
E
13
1.2
E
12
1.2
E
12
1.1
E
12
1.1
E
12
1
E
12
1
E
12
1.2
S
10
1.2
S
10
1.2
S
10
1.2
S
10
1.2
SSW
10
1.2
SSW
10
1.2
SSW
11
Wave Graph
Metric surfscale
Energy kJ
679
814
872
857
757
770
729
683
673
572
555
444
423
350
347
282
278
308
308
302
296
312
318
337
Wind (km/h)
5
N
5
NNE
5
NNE
5
S
10
SSE
10
S
0
SSE
5
NE
5
NNE
5
N
5
NNE
5
SW
10
SSW
5
S
5
SSW
5
N
5
NNW
5
N
5
NNE
0
NE
10
SSW
10
S
5
SSW
5
NNW
Wind State
glassy
glassy
off
glassy
on
on
glassy
glassy
glassy
glassy
glassy
glassy
on
on
glassy
glassy
glassy
off
off
glassy
on
on
on
off
High Tide
1:20AM1.53m
4:31PM1.57m
2:49AM1.60m
5:17PM1.70m
3:58AM1.71m
5:54PM1.79m
Low Tide
9:02AM0.31m
9:40PM1.16m
10:06AM0.16m
10:38PM1.05m
10:58AM0.04m
clear
clear
part cloud
part cloud
part cloud
cloud
thunderstorm
cloud
part cloud
part cloud
cloud
part cloud
part cloud
thunderstorm
part cloud
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:22
5:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:57
6:55
 mm
1
1
Temp °C
25
25
25
28
29
28
27
26
26
25
25
28
29
29
28
26
26
25
25
28
29
29
27
25
Feels °C
29
28
28
31
32
31
32
30
30
29
29
32
32
33
32
30
30
28
28
32
31
31
30
27
  • 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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