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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Thursday 09 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
18.6° 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 11PM is: 1.4m 6s primary swell from a South direction and 0.6m 9s secondary swell from a East-southeast direction, 0.3m 11s secondary swell from a Southeast direction (forecast issued at 08:00pm April 09). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Apr) | - | - |
| Afternoon (09 Apr) | - | - |
| Evening (09 Apr) | 4ft (1.2m) | 5s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 09 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||||||||
| 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) (?) | 9 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 61 | 80 | 154 | 291 | 620 | 1181 | 1728 | 1702 | 1274 | 719 | 361 | 274 | 220 | 172 | 131 | 109 | 107 | 105 | 101 | 99 | 101 | 101 | 99 | 99 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | on | on | cross- on | on | cross- on | cross- on | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- off | glass | off | off | off | off | off | glass | on | cross- on |
High Tide / height (m) | 12:16AM 1.26 | 9:12AM 1.39 | 2:39AM 1.33 | 11:27AM 1.29 | 3:18AM 1.43 | |||||||||||||||||||
Low Tide / height (m) | 4:16PM 0.62 | 3:36AM 1.22 | 5:52PM 0.69 | 7:30AM 1.24 | 7:39PM 0.66 | |||||||||||||||||||
Thu 09 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:39 | - | - | - |
| Sunset | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - |
 |  | |  |  | | | |  |  |  | | | | | | |  | | |  | |  | | |
Rain (mm) | 1 | 2 | 3 | 6 | 12 | 13 | 18 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 17 | 17 | 18 | 19 | 20 | 20 | 20 | 20 | 18 | 17 | 16 | 14 | 18 | 22 | 22 | 20 | 15 | 14 | 13 | 13 | 17 | 19 | 19 |
| Feels °C (?) | 15 | 16 | 16 | 18 | 19 | 19 | 21 | 22 | 23 | 20 | 18 | 16 | 12 | 16 | 19 | 20 | 17 | 12 | 11 | 10 | 10 | 16 | 17 | 18 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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