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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Wednesday 25 Mar 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
17.7° 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 11AM is: 1.9m 6s primary swell from a East-southeast direction and 0.1m 5s secondary swell from a South direction (forecast issued at 08:00am March 25). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Mar) | 2.5ft (0.7m) | 8s |
| Afternoon (25 Mar) | 6.5ft (2.0m) | 6s |
| Evening (25 Mar) | 8ft (2.5m) | 8s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 25 | Thursday 26 | Friday 27 | Sat 28 | |||||||||||||||||||||
| 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 | 6 | 6 | 7 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 45 | 60 | 227 | 309 | 573 | 943 | 1118 | 1505 | 1618 | 1300 | 1108 | 1020 | 1040 | 918 | 740 | 666 | 586 | 510 | 440 | 377 | 319 | 262 | 262 | 220 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross- off | off | off | off | off | off | off | off | off | off | off | off | off | off | glass | on | on | glass | cross- off | cross- off | off |
High Tide / height (m) | 9:04AM 1.62 | 12:22AM 1.35 | 9:55AM 1.49 | 2:53AM 1.41 | 12:06PM 1.38 | |||||||||||||||||||
Low Tide / height (m) | 3:20AM 1.08 | 4:37PM 0.42 | 4:23AM 1.23 | 6:20PM 0.51 | 7:43AM 1.27 | 8:12PM 0.49 | ||||||||||||||||||
Wednesday 25 | Thursday 26 | Friday 27 | Sat 28 | |||||||||||||||||||||
| Sunrise | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:19 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:21 | - | - | - |
 |  |  | | | | |  |  |  | | |  | | | | | |  | | |  | | | |
Rain (mm) | 1 | 3 | 9 | 2 | 4 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 14 | 15 | 17 | 16 | 12 | 11 | 10 | 10 | 14 | 16 | 15 | 15 | 14 | 13 | 13 |
| Feels °C (?) | 10 | 10 | 10 | 11 | 11 | 8 | 8 | 9 | 8 | 11 | 11 | 13 | 13 | 9 | 8 | 7 | 7 | 13 | 14 | 14 | 15 | 13 | 12 | 12 |
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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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