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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 pm Wednesday 01 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
18.9° C
(Which is slightly warmer than usual)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 9PM is: 0.8m 7s primary swell from a Southeast direction (forecast issued at 02:00pm April 01). An open ocean swell of 0.6m 4s is not directed at the surf break, a second open ocean swell of 1.0m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Apr) | - | - |
| Afternoon (01 Apr) | 3ft (0.9m) | 8s |
| Evening (01 Apr) | 2.5ft (0.8m) | 7s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 01 | Thursday 02 | Friday 03 | Saturday 04 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 7 | 7 | 7 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 8 | 8 | 7 | 13 | 13 | 13 | 10 | 10 | 10 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 233 | 102 | 86 | 59 | 59 | 390 | 354 | 223 | 96 | 71 | 45 | 31 | 28 | 19 | 17 | 17 | 27 | 27 | 27 | 27 | 27 | 33 | 73 | 290 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | off | off | off | off | off | off | glass | on | on | glass | cross- off | on | on | on | on |
High Tide / height (m) | 5:48PM 1.84 | 6:00AM 1.81 | 6:23PM 1.86 | 6:21AM 1.82 | 6:57PM 1.83 | 6:42AM 1.80 | ||||||||||||||||||
Low Tide / height (m) | 11:40AM 0.44 | 11:56PM 0.40 | 12:09PM 0.33 | 12:24AM 0.49 | 12:37PM 0.25 | 12:50AM 0.59 | ||||||||||||||||||
Wednesday 01 | Thursday 02 | Friday 03 | Saturday 04 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:50 | - |
| Sunset | - | - | 6:23 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:25 | - | - | - | - | - |
 |  | |  |  |  |  | |  | | | | | | | | | | |  | | | | | |
Rain (mm) | 5 | 6 | 7 | 7 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5 | 9 |
| Temp. °C | 13 | 14 | 14 | 13 | 13 | 13 | 11 | 13 | 16 | 18 | 16 | 12 | 11 | 10 | 10 | 15 | 16 | 17 | 16 | 14 | 16 | 15 | 16 | 16 |
| Feels °C (?) | 13 | 14 | 14 | 11 | 11 | 10 | 7 | 10 | 14 | 15 | 13 | 9 | 8 | 7 | 7 | 13 | 13 | 14 | 15 | 12 | 15 | 12 | 11 | 10 |
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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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