Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 2 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
28.2° C
0.5° 

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 Aug):

  • Afternoon surf: Afternoon surf (20 Aug, local time) - 2ft (0.6m), 8s period with S swell.
  • Evening surf: Evening surf (20 Aug, local time) - 3ft (0.9m), 9s period with S swell.

The current surf forecast for Niyodo Rivermouth at 7PM is: 0.8m 9s primary swell from a South direction and 0.4m 10s secondary swell from a East-southeast direction (forecast issued at 02:00pm August 20). The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (20 Aug)--
Afternoon (20 Aug)2ft (0.6m)8s
Evening (20 Aug)3ft (0.9m)9s

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


Short Range Forecast

Mostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Thu night). Wind will be generally light.

Thu
20
Friday
21
Saturday
22
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)
0
0
1
1
1
2
2
2
1
1
2
2
1
1
1
1
0
0
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
ESE
10
0.6
S
8
0.8
S
9
0.9
S
9
0.9
S
9
1
S
9
1
S
9
1
S
9
1
S
10
1
S
9
1
S
9
1
S
9
0.9
SSW
9
0.9
SSW
9
0.9
SSW
9
0.9
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
8
Wave Graph
Metric surfscale
Energy kJ
38
51
102
129
126
152
152
171
183
168
164
160
135
138
135
135
106
103
99
96
Wind (km/h)
10
S
10
S
5
S
0
NE
5
NNE
5
N
5
N
5
S
10
S
10
S
5
SSW
5
N
5
NNE
5
N
5
N
5
SSW
10
S
10
S
5
SSW
0
NNE
Wind State
on
on
glassy
glassy
glassy
off
glassy
glassy
on
on
glassy
glassy
glassy
glassy
glassy
glassy
on
on
glassy
glassy
High Tide
9:56PM1.50m
2:33PM1.21m
10:41PM1.41m
4:35PM1.33m
Low Tide
3:41PM1.08m
5:50AM0.67m
3:45PM1.21m
7:39AM0.66m
8:21PM1.28m
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:30
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:44
 mm
Temp °C
29
29
28
26
25
25
25
28
29
29
28
26
26
25
25
28
29
29
28
26
Feels °C
33
33
33
31
29
29
29
32
32
33
33
31
31
29
29
32
32
33
32
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.


Nearest locationNearest