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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Friday 03 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
18.8° C
(Which is slightly warmer than usual)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 12PM is: 0.3m 13s primary swell from a Southeast direction and 0.4m 7s secondary swell from a Southeast direction, 0.4m 7s secondary swell from a Southwest direction (forecast issued at 08:00am April 03). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Apr) | 1.5ft (0.4m) | 8s |
| Afternoon (03 Apr) | 1ft (0.3m) | 13s |
| Evening (03 Apr) | 1.5ft (0.4m) | 10s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 03 | Saturday 04 | Sunday 05 | Mon 06 | |||||||||||||||||||||
| 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 | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 13 | 13 | 13 | 10 | 5 | 5 | 6 | 7 | 8 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 18 | 18 | 27 | 27 | 27 | 38 | 34 | 98 | 295 | 625 | 1824 | 4945 | 3748 | 3374 | 1936 | 1417 | 1044 | 783 | 421 | 260 | 197 | 161 | 286 | 278 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | on | on | glass | cross- on | on | on | on | on | on | on | on | cross | cross- off | glass | off | glass | on | on | glass | cross- off | cross- off | cross- off |
High Tide / height (m) | 6:21AM 1.82 | 6:57PM 1.83 | 6:42AM 1.80 | 7:30PM 1.77 | 7:03AM 1.77 | 8:04PM 1.68 | ||||||||||||||||||
Low Tide / height (m) | 12:37PM 0.25 | 12:50AM 0.59 | 1:05PM 0.23 | 1:15AM 0.70 | 1:34PM 0.24 | 1:39AM 0.81 | ||||||||||||||||||
Friday 03 | Saturday 04 | Sunday 05 | Mon 06 | |||||||||||||||||||||
| Sunrise | 5:50 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:25 | - | - | - | - | - | - | - | 6:27 | - | - | - | - | - | - | - | 6:27 | - | - | - |
 |  | | |  |  |  |  |  |  |  | |  |  | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | 1 | 1 | 4 | 6 | 20 | 22 | 4 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 15 | 17 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 17 | 19 | 19 | 18 | 17 | 16 | 15 | 17 | 19 | 19 | 18 | 16 | 15 | 14 |
| Feels °C (?) | 8 | 14 | 15 | 16 | 16 | 15 | 15 | 13 | 12 | 10 | 11 | 16 | 19 | 19 | 18 | 16 | 14 | 18 | 19 | 18 | 18 | 16 | 15 | 13 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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