Niyodo Rivermouth Surf Break

Niyodo Rivermouth 48 hour detailed Surf Forecast

Lat Long: 33.54° N 133.69° E

Issued: 2 am 18 Jun 2026 (local time)

Forecast update in  hr  min

Today's Niyodo Rivermouth sea temperature is
23.7° C

Normal for this time of year

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 Jun):

  • Morning surf: Morning surf (18 Jun, local time) - 3.5ft (1.1m), 8s period with SSW swell.
  • Afternoon surf: Afternoon surf (18 Jun, local time) - 3ft (0.9m), 7s period with SSW swell.
  • Evening surf: Evening surf (18 Jun, local time) - 3ft (0.9m), 8s period with SSW swell.

The current surf forecast for Niyodo Rivermouth at 7AM is: 1.2m 8s primary swell from a South-southwest direction and 0.9m 6s secondary swell from a East direction, 0.4m 3s secondary swell from a West-southwest direction (forecast issued at 02:00am June 18). The wind direction is predicted to be glassy and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (18 Jun)3.5ft (1.1m)8s
Afternoon (18 Jun)3ft (0.9m)7s
Evening (18 Jun)3ft (0.9m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 42mm), heaviest during Sat afternoon. Warm (max 26°C on Fri morning, min 23°C on Thu night). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
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)
1
2
2
1
0
0
0
1
2
2
2
1
0
1
1
1
1
0
1
0
0
0
1
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)
1.3
E
7
1.3
SSW
8
1.3
SSW
8
1.1
SSW
8
1
SSW
8
0.9
SSW
7
0.8
SSW
7
0.9
SSW
8
1.3
SSW
8
1.4
SSW
8
1.3
SSW
8
1.2
SSW
7
0.9
SSW
7
0.9
SSW
6
0.7
SSW
6
0.7
SSW
6
0.4
SE
10
0.4
SE
10
0.4
SE
10
1
SSW
6
1.7
SSW
6
2.5
SSW
7
2.5
SW
7
2.5
SSW
8
Wave Graph
Metric surfscale
Energy kJ
152
221
223
147
120
97
71
99
221
256
181
139
79
59
37
35
35
35
35
62
223
569
684
785
Wind (km/h)
10
NNW
10
NNW
0
NNW
5
S
5
S
10
S
5
S
5
NNE
5
N
5
N
5
NE
5
SSE
10
SSE
0
SW
5
WNW
5
SW
5
SW
5
SW
5
SE
5
SE
15
S
15
SSW
15
SSW
10
SW
Wind State
cross-off
off
glassy
glassy
on
on
on
glassy
off
glassy
glassy
glassy
on
glassy
glassy
glassy
glassy
cross-on
glassy
cross-on
on
on
cross-on
cross-on
High Tide
7:23AM1.81m
9:15PM1.74m
8:15AM1.72m
10:00PM1.67m
9:11AM1.61m
Low Tide
1:53AM0.95m
2:20PM0.03m
2:43AM0.94m
3:07PM0.19m
3:37AM0.91m
3:55PM0.38m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
mod rain
light rain
thunderstorm
heavy rain
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:54
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:16
7:16
 mm
1
6
6
1
4
11
7
2
Temp °C
23
21
22
25
25
25
24
23
23
23
23
25
26
24
24
23
23
23
23
23
24
24
24
24
Feels °C
25
22
25
28
28
27
27
27
26
26
26
28
29
28
28
27
27
27
27
27
27
26
27
28
Swell 1
Height (m)
Direction
Period (s)
1.3
E
7
1.2
E
6
1.3
SSW
8
1.1
SSW
8
1
SSW
8
0.9
SSW
7
0.8
SSW
7
0.9
SSW
8
1.3
SSW
8
1.4
SSW
8
1.3
SSW
8
1.2
SSW
7
0.9
SSW
7
0.9
SSW
6
0.7
SSW
6
0.7
SSW
6
0.6
SSW
6
0.6
SSW
6
0.5
S
5
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
Energy kJ
152
123
223
147
120
97
71
99
221
256
181
139
79
59
37
35
25
24
14
25
24
24
24
24
Swell 2
Height (m)
Direction
Period (s)
0.3
S
6
1.3
SSW
8
1
E
6
0.7
E
6
0.6
E
6
0.4
ESE
6
0.4
ESE
6
0.3
ESE
6
0.4
SE
10
0.4
SE
10
0.3
SE
11
0.3
SE
9
0.3
SE
9
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.1
E
8
0.1
SE
13
0.1
SE
12
0.1
SE
12
Energy kJ
7
221
81
36
24
12
12
7
25
25
18
14
14
23
24
24
35
35
35
1
7
6
6
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
7
0.1
SE
10
0.2
SSE
10
0.3
SE
10
0.2
E
12
0.2
E
12
0.3
SE
10
0.3
SE
10
0.3
ESE
6
0.3
ESE
6
0.2
E
10
0.2
ESE
11
0.2
ESE
11
0.1
SE
6
0.2
E
10
0.1
SE
14
0.1
E
8
0.1
E
8
0.1
E
8
0.1
SE
13
Energy kJ
11
4
10
15
11
11
15
15
8
8
8
12
12
1
8
7
1
1
1
7
Wind waves
Height (m)
Direction
Period (s)
1.8
ENE
6
0.4
WSW
3
0.8
SSW
5
1
SSW
6
1.7
SSW
6
2.5
SSW
7
2.5
SW
7
2.5
SSW
8
Energy kJ
263
3
32
62
223
569
684
785
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
2
2
1
4
Distance (km)
0
0
0
0
51
51
51
0
0
0
0
0
51
0
0
0
0
51
0
29
642
642
283
51
Best forecast wave conditions in Shikoku
Rating
(10 max)
1
2
2
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
4
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
2
1
2
2
1
1
2
2
2
1
1
1
1
1
1
1
1
1
2
4
Header Global
Rating
(10 max)
4
4
5
5
5
9
9
9
5
5
5
5
6
6
6
5
9
5
4
5
4
4
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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