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Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Sunday 20 Jul 2025 JST
How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 8AM is: 1.3m 9s primary swell from a East-southeast direction and 0.7m 8s secondary swell from a South direction (forecast issued at 02:00am July 20). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 4.5ft (1.3m) | 9s |
| Afternoon (20 Jul) | 4.5ft (1.3m) | 9s |
| Evening (20 Jul) | 3.5ft (1.0m) | 10s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||||
| 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 | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 9 | 9 | 9 | 11 | 10 | 9 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 392 | 391 | 335 | 381 | 405 | 396 | 470 | 411 | 412 | 398 | 375 | 344 | 382 | 395 | 364 | 360 | 336 | 314 | 311 | 310 | 302 | 310 | 309 | 300 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | glass | on | on | cross- on | cross- off | glass | cross- off | off | glass | on | on | glass | glass | off | off | off | glass | on | on | glass | glass |
High Tide / height (m) | 12:19AM 1.59 | 2:57PM 1.42 | 1:28AM 1.57 | 4:19PM 1.54 | 2:41AM 1.60 | 5:16PM 1.65 | ||||||||||||||||||
Low Tide / height (m) | 7:43AM 0.45 | 7:51PM 1.12 | 8:57AM 0.32 | 9:24PM 1.14 | 10:01AM 0.19 | |||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||||
| Sunrise | - | - | 5:07 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:14 | - | - | - | - | - | - | - | 7:13 | - | - | - | - | - | - | - | 7:12 | - |
 | |  | | |  | | | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 25 | 28 | 28 | 29 | 28 | 26 | 25 | 25 | 25 | 28 | 29 | 29 | 28 | 26 | 25 | 25 | 25 | 27 | 29 | 29 | 28 | 26 |
| Feels °C (?) | 29 | 27 | 28 | 33 | 31 | 33 | 33 | 31 | 29 | 29 | 29 | 33 | 33 | 33 | 33 | 31 | 29 | 29 | 29 | 32 | 32 | 32 | 33 | 31 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Shikoku
Continuing clean conditions at Niyodo Rivermouth (light winds from the N at Kochi Airport 3 km from Niyodo Rivermouth). 1.3m 9s swell from the SE with a 0.5m 10s swell from the S. Swells combining to make to make bigger set waves.
2 h 35 min ago
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