Niyodo Rivermouth Surf Break

Lat Long: 33.54° N 133.69° E

Niyodo Rivermouth 48 hour detailed Surf Forecast

Issued: 2 am 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
29.1° C
1.4° 

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 (12 Aug):

  • Morning surf: Morning surf (12 Aug, local time) - 3ft (0.9m), 10s period with SSW swell.
  • Afternoon surf: Afternoon surf (12 Aug, local time) - 2.5ft (0.8m), 9s period with S swell.
  • Evening surf: Evening surf (12 Aug, local time) - 2.5ft (0.8m), 9s period with SSW swell.

The current surf forecast for Niyodo Rivermouth at 9AM is: 0.9m 10s primary swell from a South-southwest direction and 0.7m 11s secondary swell from a East direction (forecast issued at 02:00am August 12). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (12 Aug)3ft (0.9m)10s
Afternoon (12 Aug)2.5ft (0.8m)9s
Evening (12 Aug)2.5ft (0.8m)9s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Thu afternoon. Warm (max 29°C on Wed morning, min 24°C on Wed night). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
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
1
2
1
1
1
1
1
0
0
0
0
1
1
1
1
0
1
0
1
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)
1.1
SSW
10
1.1
SSW
10
1
SSW
10
0.9
SSW
10
0.8
S
10
0.8
S
9
0.8
SSW
10
0.8
SSW
9
0.9
SSW
9
0.7
S
10
0.9
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.7
E
11
0.7
E
10
0.7
E
10
Wave Graph
Metric surfscale
Energy kJ
265
270
222
191
120
108
120
115
144
94
144
113
110
110
110
108
106
106
101
99
99
108
100
96
Wind (km/h)
15
N
10
NNW
10
NNW
10
NW
15
S
5
SE
0
SE
5
E
5
NNE
5
NE
5
NNE
5
SSW
15
SSE
15
SSE
10
SE
10
ESE
5
E
5
NE
5
NNE
5
SSE
10
S
10
S
5
S
5
NNE
Wind State
off
off
off
cross-off
on
cross-on
glassy
glassy
glassy
cross-off
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
glassy
on
on
on
glassy
High Tide
4:53AM1.82m
6:28PM1.85m
5:42AM1.90m
6:59PM1.87m
6:27AM1.93m
7:27PM1.86m
Low Tide
11:23PM0.92m
11:43AM-0.03m
00:02AM0.79m
12:23PM-0.02m
00:40AM0.67m
1:00PM0.06m
clear
clear
clear
clear
part cloud
rain showers
light rain
part cloud
clear
clear
clear
clear
thunderstorm
thunderstorm
clear
thunderstorm
rain showers
rain showers
clear
clear
thunderstorm
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:24
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:53
6:52
 mm
1
1
1
3
1
1
1
1
Temp °C
22
22
24
28
29
27
26
26
25
24
24
27
28
28
27
25
25
24
24
27
28
28
27
25
Feels °C
22
22
25
30
30
30
30
30
28
27
27
30
30
30
29
28
28
27
27
30
30
30
30
29
  • 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
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