- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Saturday 25 Apr 2026 JSTForecast 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
19.5° C
(Which is normal for this time of year)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 3PM is: 1.9m 10s primary swell from a East-southeast direction and 0.3m 6s secondary swell from a South direction (forecast issued at 08:00am April 25). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Apr) | 7ft (2.1m) | 8s |
| Afternoon (25 Apr) | 6ft (1.9m) | 10s |
| Evening (25 Apr) | 8ft (2.5m) | 10s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 42mm), heaviest during Sun night. Warm (max 21°C on Mon morning, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tue 28 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 9 | E 8 | E 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | E 8 | E 8 | E 8 | |
573 | 626 | 613 | 681 | 1129 | 1170 | 1106 | 1133 | 1106 | 981 | 932 | 932 | 932 | 939 | 827 | 575 | 373 | 232 | 173 | 142 | 96 | 74 | 57 | 41 | |
Wind (km/h) | ||||||||||||||||||||||||
off | glassy | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-on | cross-on | glassy | cross-off | cross-off | off | |
High Tide | 12:24PM1.36m | 2:53AM1.53m | 2:14PM1.42m | 3:30AM1.59m | 3:24PM1.52m | |||||||||||||||||||
Low Tide | 7:33AM1.14m | 7:39PM0.55m | 8:49AM0.97m | 8:48PM0.56m | 9:35AM0.78m | 9:39PM0.57m | ||||||||||||||||||
 |  | | | |  |  | | | | |  |  |  |  |  |  | | | | | | | | |
 | 5:24 | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:20 |
 | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:44 | — | — | 6:45 |
— | — | — | — | — | — | — | — | — | — | — | 2 | 7 | 7 | 26 | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 17 | 19 | 19 | 18 | 16 | 17 | 16 | 16 | 18 | 17 | 16 | 15 | 15 | 15 | 14 | 13 | 19 | 21 | 20 | 19 | 17 | 16 | 16 |
11 | 15 | 17 | 18 | 16 | 15 | 16 | 15 | 14 | 15 | 15 | 14 | 13 | 14 | 14 | 13 | 11 | 18 | 20 | 19 | 19 | 17 | 16 | 16 | |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | S 6 | S 6 | S 6 | — | — | S 7 | S 7 | SW 7 | — | SE 13 | SE 13 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | E 8 | E 8 | E 8 |
 kJ | 325 | 402 | 393 | 7 | 3 | 3 | — | — | 1 | 1 | 2 | — | 7 | 7 | 827 | 575 | 373 | 232 | 173 | 142 | 96 | 74 | 57 | 41 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | S 7 | S 7 | — | — | — | — | — | — | — | — | — | — | — | SE 13 | SE 13 | SE 13 | S 6 | S 6 | S 6 | S 6 | S 6 | SSW 6 | SSW 6 |
| kJ | 15 | 14 | 8 | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | 7 | 13 | 29 | 29 | 28 | 18 | 29 | 17 |
Swell 3 Height (m) Direction Period (s) | SSW 7 | SE 12 | SE 15 | — | — | — | — | — | — | — | — | — | — | — | — | S 7 | S 7 | SE 13 | SE 12 | SE 12 | ESE 12 | ESE 12 | ESE 12 | SE 12 |
| kJ | 5 | 6 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 7 | 6 | 6 | 14 | 14 | 14 | 23 |
Wind waves Height (m) Direction Period (s) | E 9 | E 8 | E 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — | — | — | — | — | — | SSW 6 | SSW 4 | — | SW 6 |
| kJ | 573 | 626 | 613 | 681 | 1129 | 1170 | 1106 | 1133 | 1106 | 981 | 932 | 932 | 932 | 939 | — | — | — | — | — | — | 42 | 5 | — | 32 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 29 | 183 | 183 | 0 | 0 | 0 | 0 | 585 | 330 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 64 | 183 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Niyodo Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest