Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 2 am Tuesday 02 Jun 2026 JST
Forecast update in hr  min  s Forecast update imminent
Niyodo Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Niyodo Rivermouth sea temperature is
23.7° C
(Which is 1.6°C warmer than normal for this time of year)

How big are the waves at Niyodo Rivermouth today (02 Jun):

  • Morning surf: Morning surf (02 Jun, local time) - 7ft (2.2m), 13s period with SSW swell.
  • Afternoon surf: Afternoon surf (02 Jun, local time) - 8ft (2.5m), 14s period with SSW swell.
  • Evening surf: Evening surf (02 Jun, local time) - 10ft (3.0m), 14s period with SSW swell.

The current surf forecast for Niyodo Rivermouth at 8AM is: 2.2m 13s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a East direction, 1.8m 6s secondary swell from a Southeast direction (forecast issued at 02:00am June 02). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (02 Jun)7ft (2.2m)13s
Afternoon (02 Jun)8ft (2.5m)14s
Evening (02 Jun)10ft (3.0m)14s

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 167mm), heaviest during Tue night. Warm (max 28°C on Wed afternoon, min 20°C on Wed night). Winds decreasing (strong winds from the ENE on Tue night, calm by Thu morning).

Tuesday
2
Wednesday
3
Thursday
4
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)
4
4
3
0
0
2
!
!
!
!
!
!
4
4
3
2
2
2
2
1
1
1
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.3
S
14
2.3
S
14
2.5
S
13
2.2
SSW
13
2.5
SSW
14
2.5
SSW
14
3
SSW
14
3
SSW
14
5
SSW
14
5.5
SSW
14
4.5
SSW
13
3.5
SSW
12
2.4
SSW
11
1.8
SSW
11
1.4
SSW
10
1.6
S
9
1.1
SSW
9
1.2
S
8
1.1
S
8
1
S
8
0.9
S
8
0.8
S
7
0.8
S
7
0.7
S
7
Wave Graph
Metric surfscale
Energy kJ
2155
1980
2149
1649
2736
2724
2993
3993
9274
12529
6891
3527
1511
730
380
425
184
199
156
122
89
70
67
47
Wind (km/h)
5
NNE
10
NE
10
ESE
25
SE
25
SE
25
ESE
35
E
40
ENE
30
NE
35
NNW
15
NW
10
WNW
10
NNW
15
NNW
15
N
15
N
10
NNE
10
N
10
N
5
NW
5
S
5
ESE
10
SE
10
ESE
glassy
cross-off
cross
cross-on
cross-on
cross
cross
cross-off
cross-off
off
cross-off
cross-off
cross-off
off
off
off
off
off
off
glassy
glassy
glassy
cross-on
cross-on
High Tide
6:07AM1.69m
7:51PM1.65m
6:40AM1.68m
8:29PM1.61m
7:15AM1.64m
Low Tide
00:38AM0.97m
12:59PM0.19m
1:11AM0.98m
1:35PM0.23m
1:46AM1.00m
2:12PM0.29m
cloud
light rain
mod rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
rain showers
light rain
cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
cloud
cloud
light rain
light rain
mod rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:54
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:10
5
10
16
13
18
25
28
40
4
1
1
3
6
6
Temp °C
21
20
21
22
22
22
23
23
23
23
22
22
27
28
26
22
20
20
20
22
21
20
20
20
23
22
23
22
21
21
21
19
22
19
22
23
29
28
27
23
21
20
20
23
24
23
22
22
Swell 1
Height (m)
Direction
Period (s)
2.3
S
14
2.3
S
14
2.5
S
13
2.2
SSW
13
2.5
SSW
14
2.5
SSW
14
3
SSW
14
3
SSW
14
5
SSW
14
5.5
SSW
14
4.5
SSW
13
3.5
SSW
12
2.4
SSW
11
1.8
SSW
11
1.4
SSW
10
1.6
S
9
1.1
SSW
9
1.2
S
8
1.1
S
8
1
S
8
0.9
S
8
0.8
S
7
0.8
S
7
0.7
S
7
Energy kJ
2155
1980
2149
1649
2736
2724
2993
3993
9274
12529
6891
3527
1511
730
380
425
184
199
156
122
89
70
67
47
Swell 2
Height (m)
Direction
Period (s)
0.5
ESE
10
0.5
ESE
10
0.4
E
10
0.5
E
10
0.2
S
19
4.5
ESE
11
3.5
ESE
11
2.5
ESE
10
2.1
SE
10
1.4
SE
10
1.2
SSE
9
0.5
E
9
0.9
SSE
8
0.3
E
10
0.4
ESE
10
0.4
ESE
9
0.4
E
9
0.4
ESE
9
0.4
ESE
9
0.5
E
9
Energy kJ
58
58
30
45
27
4146
2490
1508
880
327
221
43
108
17
31
28
27
28
28
42
Swell 3
Height (m)
Direction
Period (s)
0.3
SE
12
0.3
SE
12
1
NE
7
1.2
E
9
0.9
E
10
0.7
E
9
0.1
SE
15
0.4
E
10
0.2
ESE
11
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.2
ESE
11
0.2
ESE
11
0.3
SE
11
Energy kJ
22
22
104
251
145
83
8
30
13
20
20
19
12
12
19
Wind waves
Height (m)
Direction
Period (s)
1.8
SE
6
1.6
SE
7
2.4
ESE
7
3.5
ESE
8
4.5
ESE
9
5.5
ESE
10
0.8
NNW
4
0.9
NW
4
0.4
NW
4
0.3
NNW
2
0.3
NNW
3
0.2
N
3
Energy kJ
239
230
531
1492
3451
6209
20
28
4
1
2
1
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
2
2
4
2
1
5
4
4
2
4
4
3
2
2
2
2
1
1
1
1
1
Distance (km)
0
0
29
380
380
432
539
535
224
224
183
9
0
0
0
0
0
0
0
0
0
0
29
29
Best forecast wave conditions in Shikoku
Rating
(10 max)
4
4
4
8
4
4
3
2
2
2
2
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
4
4
4
4
2
2
9
6
4
8
4
4
3
2
2
2
2
1
1
1
1
2
Header Global
Rating
(10 max)
5
5
5
5
6
4
4
6
4
5
5
5
5
5
4
5
5
5
5
5
5
4
5
5
  • 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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