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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Sunday 12 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
18.4° 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 1AM is: 0.8m 11s primary swell from a East-southeast direction and 0.2m 5s secondary swell from a South-southwest direction (forecast issued at 08:00pm April 12). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Apr) | 2.5ft (0.8m) | 11s |
| Afternoon (13 Apr) | 2.5ft (0.8m) | 11s |
| Evening (13 Apr) | 3ft (0.9m) | 11s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 18 | 17 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 97 | 141 | 128 | 143 | 143 | 143 | 143 | 143 | 143 | 166 | 183 | 204 | 200 | 200 | 200 | 251 | 319 | 325 | 325 | 367 | 479 | 679 | 962 | 2093 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | off | cross- on | glass | glass | glass | glass | glass | glass | glass | glass | glass | on | on | glass | glass | off | off | glass | glass | off | cross- off |
High Tide / height (m) | ||||||||||||||||||||||||
Low Tide / height (m) | ||||||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:35 | - | - | - |
| Sunset | 6:32 | - | - | - | - | - | - | - | 6:32 | - | - | - | - | - | - | - | 6:34 | - | - | - | - | - | - | - |
 |  | | | |  | | |  |  | | | | | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 3 | 2 |
| Temp. °C | 18 | 17 | 16 | 17 | 16 | 15 | 16 | 16 | 17 | 16 | 16 | 16 | 15 | 17 | 19 | 18 | 17 | 17 | 16 | 17 | 16 | 15 | 16 | 16 |
| Feels °C (?) | 19 | 17 | 16 | 17 | 16 | 16 | 17 | 17 | 18 | 17 | 17 | 16 | 15 | 18 | 18 | 18 | 18 | 18 | 16 | 17 | 16 | 15 | 16 | 16 |
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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.
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