Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 8 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
28.9°C
1.7° 

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 (10 Sep):

  • Morning surf: Morning surf (10 Sep, local time) - 3.5ft (1.0m), 8s period with SSE swell.
  • Afternoon surf: Afternoon surf (10 Sep, local time) - 3.5ft (1.0m), 8s period with SSE swell.
  • Evening surf: Evening surf (10 Sep, local time) - 3.5ft (1.1m), 8s period with SE swell.

The current surf forecast for Niyodo Rivermouth at 1PM is: 1.0m 8s primary swell from a South-southeast direction and 0.2m 16s secondary swell from a East direction (forecast issued at 08:00am September 10). An open ocean swell of 0.5m 5s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (10 Sep)3.5ft (1.0m)8s
Afternoon (10 Sep)3.5ft (1.0m)8s
Evening (10 Sep)3.5ft (1.1m)8s

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


Short Range Forecast

Heavy rain (total 32mm), heaviest during Thu afternoon. Warm (max 28°C on Sat morning, min 22°C on Thu afternoon). Wind will be generally light.

Thursday
10
Friday
11
Saturday
12
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)
1
1
0
1
1
1
2
1
2
1
1
1
2
2
1
1
1
1
1
1
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)
1
SSE
8
1
SSE
8
1
SSE
8
1
SSE
8
1.1
SE
8
1.1
SE
8
1.1
SE
7
1.1
SE
7
0.8
E
9
0.9
SSE
8
1
SSE
7
1.2
SSE
7
1.2
SSE
7
1.2
S
7
1.1
S
7
1
S
7
0.9
SSE
7
0.8
S
7
0.5
E
14
0.5
E
14
0.5
E
14
0.6
E
14
Wave Graph
Metric surfscale
Energy kJ
140
133
126
123
128
141
121
118
99
88
117
147
164
159
127
100
79
61
89
89
89
134
Wind (km/h)
10
N
5
N
5
SSE
5
WSW
0
NW
0
NNE
5
N
5
NNW
5
NNE
0
S
5
SSE
5
SE
0
E
5
NNW
5
N
5
NNE
5
NNE
0
SSW
5
S
5
SSW
0
NW
5
N
Wind State
off
glassy
cross-on
glassy
glassy
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
glassy
glassy
glassy
glassy
glassy
High Tide
4:52AM1.83m
5:53PM1.84m
5:36AM1.91m
6:18PM1.86m
6:17AM1.93m
6:43PM1.87m
Low Tide
11:25AM0.13m
11:42PM0.58m
12:00PM0.17m
00:14AM0.45m
12:32PM0.26m
part cloud
part cloud
light rain
mod rain
light rain
cloud
cloud
rain showers
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:45
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:17
6:16
 mm
1
6
5
2
1
2
3
1
1
3
3
2
1
Temp °C
23
25
24
22
23
23
23
24
24
26
26
27
26
25
25
25
25
27
28
28
27
26
Feels °C
25
27
27
26
27
27
27
28
28
31
30
32
32
29
30
29
29
33
33
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 

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