Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 8 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
28.4° C
0.8° 

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 (18 Aug):

  • Morning surf: Morning surf (18 Aug, local time) - 2.5ft (0.8m), 8s period with ESE swell.
  • Afternoon surf: Afternoon surf (18 Aug, local time) - 3.5ft (1.0m), 5s period with ESE swell.
  • Evening surf: Evening surf (18 Aug, local time) - 3ft (0.9m), 8s period with ESE swell.

The current surf forecast for Niyodo Rivermouth at 3AM is: 0.7m 9s primary swell from a East-southeast direction and 0.4m 8s secondary swell from a South-southwest direction (forecast issued at 08:00pm August 17). The wind direction is predicted to be offshore.

Time (JST) & DateWave HeightWave Period
Morning (18 Aug)2.5ft (0.8m)8s
Afternoon (18 Aug)3.5ft (1.0m)5s
Evening (18 Aug)3ft (0.9m)8s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Tue afternoon. Warm (max 29°C on Wed morning, min 24°C on Mon night). Wind will be generally light.

Mon
17
Tuesday
18
Wednesday
19
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)
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
0.7
ESE
9
0.8
ESE
9
0.8
ESE
8
1
ESE
8
1
ESE
5
1
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.7
ESE
8
0.7
ESE
8
0.8
ESE
8
0.9
ESE
8
0.7
ESE
8
0.8
ESE
8
Wave Graph
Metric surfscale
Energy kJ
141
124
106
82
101
96
151
53
128
96
96
96
70
68
73
89
60
64
Wind (km/h)
10
SE
5
ESE
5
NE
5
NNE
5
NNE
5
SE
15
SSE
10
SSE
10
SSE
5
E
5
NE
5
NNE
5
NNE
0
SSW
10
SSE
10
SSE
5
SSE
5
E
Wind State
cross-on
cross
cross-off
off
off
glassy
cross-on
cross-on
cross-on
cross
glassy
off
off
glassy
on
on
cross-on
glassy
High Tide
8:43PM1.73m
9:16AM1.53m
9:06PM1.67m
10:07AM1.38m
Low Tide
3:05AM0.49m
2:58PM0.75m
3:46AM0.54m
3:21PM0.92m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:49
6:47
 mm
1
1
1
1
Temp °C
27
26
25
24
24
27
28
28
27
26
25
25
25
28
29
29
28
26
Feels °C
30
30
29
27
27
31
31
31
31
30
29
29
29
33
32
33
33
31
  • 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 

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.


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