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Surf Forecasts:

Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle48hr Weather and Surf, issued 8 pm Friday 13 Mar 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
16.6° C
 (Which is slightly cooler than normal)

How big are the waves at Niyodo Rivermouth today?

The current surf forecast for Niyodo Rivermouth at 3AM is: 1.4m 10s primary swell from a East direction (forecast issued at 08:00pm March 13). An open ocean swell of 0.3m 17s is not directed at the surf break, a second open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (14 Mar)6ft (1.8m)12s
Afternoon (14 Mar)8ft (2.4m)14s
Evening (14 Mar)8ft (2.5m)14s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Fri
13
Saturday
14
Sunday
15
Monday
16
6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM
Rating
(10 max)
0
1
2
2
3
3
4
4
4
4
4
4
4
4
3
2
3
3
3
3
3
2
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
E
0.9
E
1.2
E
1.4
E
1.5
E
1.8
E
2.2
E
2.4
E
2.5
E
2.5
E
2.4
E
2.3
E
2.2
E
2.1
E
1.9
E
1.7
E
1.6
E
1.6
E
1.5
E
1.5
E
1.4
E
1.3
E
1.3
E
1.3
E
Period(s) (?)889101112131414141313131313121212121212111314
Wave
Graph
(?)Metric surfscale
Energy kJ (?)43105224362515933168220932452241719821755165914911152814699736694636528433538617
Wind
(km/h)
25
N
20
N
20
NNW
20
N
20
N
20
N
15
NNW
5
WNW
10
N
15
N
10
N
10
N
10
N
10
NNW
10
S
5
S
0
S
10
NNE
10
N
10
N
10
N
5
N
10
S
10
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffoffoffglassoffoffoffoffoffoffononglassoffoffoffoffglassonon
High Tide
/ height (m)
4:35AM
1.43
2:32PM
1.37
4:49AM
1.54
3:36PM
1.51
5:07AM
1.65
Low Tide
/ height (m)
8:47PM
0.63
9:54AM
1.17
9:43PM
0.50
10:20AM
1.02
10:22PM
0.37
10:47AM
0.87
Fri
13
Saturday
14
Sunday
15
Monday
16
Sunrise-----6:18-------6:16-------6:15--
Sunset6:09-------6:10-------6:12-------
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C755547121411765591313129876101213
Feels °C (?)-1-1-1-1-217118321169101064427810
  • 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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View detailed surf forecast for Niyodo Rivermouth at:
surf-forecast.com

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