Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 2 am 15 Aug 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
28.4° C
0.7° 

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 (15 Aug):

  • Morning surf: Morning surf (15 Aug, local time) - 2.5ft (0.8m), 10s period with S swell.
  • Afternoon surf: Afternoon surf (15 Aug, local time) - 2.5ft (0.7m), 10s period with E swell.
  • Evening surf: Evening surf (15 Aug, local time) - 2.5ft (0.7m), 9s period with S swell.

The current surf forecast for Niyodo Rivermouth at 6AM is: 0.8m 10s primary swell from a South direction and 0.7m 10s secondary swell from a East direction (forecast issued at 02:00am August 15). The wind direction is predicted to be offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (15 Aug)2.5ft (0.8m)10s
Afternoon (15 Aug)2.5ft (0.7m)10s
Evening (15 Aug)2.5ft (0.7m)9s

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


Short Range Forecast

Heavy rain (total 21mm), heaviest during Sun afternoon. Warm (max 28°C on Sat morning, min 25°C on Sat night). Wind will be generally light.

Saturday
15
Sunday
16
Monday
17
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)
2
2
2
2
0
0
0
0
2
1
2
2
0
0
0
1
1
1
1
0
0
0
0
2
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)
0.7
E
10
0.8
S
10
0.8
S
10
0.8
S
10
0.8
S
9
0.7
E
10
0.7
E
10
0.7
S
9
0.8
E
10
0.7
E
9
0.7
E
10
0.8
E
10
1
E
9
1.4
ESE
10
1.6
ESE
7
1.4
ESE
7
1.4
ESE
6
1.3
ESE
6
1.2
ESE
6
1
ESE
6
1.1
ESE
9
1.1
ESE
9
0.5
E
9
0.9
ESE
9
Wave Graph
Metric surfscale
Energy kJ
96
125
122
117
106
96
96
76
120
85
88
122
153
394
212
158
144
123
96
68
203
188
46
140
Wind (km/h)
5
NNE
5
NNE
5
NNE
0
SSE
10
S
10
SSE
10
SSE
5
E
5
NNE
5
NE
5
NNE
5
E
20
ESE
20
SE
15
ESE
10
E
10
E
10
E
10
E
5
ESE
15
SSE
10
SSE
5
SSE
0
NNE
Wind State
glassy
glassy
off
glassy
on
on
cross-on
cross
cross-off
cross-off
glassy
glassy
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
on
on
glassy
High Tide
7:10AM1.89m
7:54PM1.84m
7:51AM1.81m
8:19PM1.79m
8:33AM1.68m
8:43PM1.73m
Low Tide
1:16AM0.57m
1:33PM0.19m
1:52AM0.51m
2:04PM0.37m
2:28AM0.48m
2:33PM0.56m
clear
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
rain showers
part cloud
cloud
part cloud
part cloud
thunderstorm
thunderstorm
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:26
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
 mm
1
1
1
1
3
4
2
1
2
1
1
1
1
Temp °C
24
24
24
27
28
28
27
26
25
25
25
27
27
27
26
25
25
25
25
27
28
28
27
26
Feels °C
28
27
27
30
30
31
30
30
29
29
29
31
28
29
28
28
28
28
28
31
30
31
31
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 

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