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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Saturday 02 May 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
21.0° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 12AM is: 0.4m 10s primary swell from a East-southeast direction and 0.7m 5s secondary swell from a Southwest direction (forecast issued at 08:00pm May 02). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 May) | 1.5ft (0.4m) | 9s |
| Afternoon (03 May) | 5ft (1.5m) | 6s |
| Evening (03 May) | 11ft (3.5m) | 8s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 63mm), heaviest during Sun afternoon. Warm (max 22°C on Sun night, min 12°C on Mon night). Winds decreasing (strong winds from the SSW on Sun night, calm by Tue morning). | ||||||||||||||||||||||||
Sat 2 | Sunday 3 | Monday 4 | Tuesday 5 | |||||||||||||||||||||
6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ESE 10 | SW 5 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | SSW 5 | SSW 6 | SSW 7 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | |
40 | 39 | 38 | 38 | 37 | 34 | 48 | 136 | 383 | 1606 | 1619 | 1194 | 829 | 504 | 330 | 257 | 178 | 97 | 55 | 42 | 42 | 42 | 41 | 58 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | on | on | on | cross-on | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | off | off | off | glassy | on | on | |
High Tide | 6:45PM1.76m | 6:02AM1.75m | 7:20PM1.72m | 6:27AM1.73m | 7:55PM1.66m | 6:53AM1.69m | ||||||||||||||||||
Low Tide | 00:23AM0.80m | 12:39PM0.17m | 00:51AM0.86m | 1:11PM0.20m | 1:19AM0.93m | 1:44PM0.26m | ||||||||||||||||||
 |  |  | |  | |  |  |  |  |  |  | | | |  | | | | | | | | | |
 | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — |
 | 6:47 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | 6:50 |
— | — | — | — | — | — | 1 | 7 | 27 | 23 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 19 | 17 | 17 | 17 | 19 | 19 | 19 | 20 | 22 | 21 | 20 | 18 | 19 | 19 | 19 | 17 | 15 | 13 | 13 | 12 | 17 | 18 | 18 |
22 | 19 | 16 | 16 | 17 | 20 | 20 | 19 | 19 | 19 | 22 | 20 | 17 | 17 | 13 | 12 | 12 | 13 | 11 | 11 | 10 | 16 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | SSW 4 | SSW 4 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
 kJ | 40 | 39 | 38 | 12 | 11 | 34 | 34 | 50 | 54 | 37 | 33 | 38 | 38 | 504 | 330 | 257 | 178 | 97 | 55 | 37 | 42 | 42 | 41 | 58 |
Swell 2 Height (m) Direction Period (s) | — | ESE 10 | — | ESE 10 | ESE 10 | E 9 | E 9 | E 9 | — | E 10 | E 9 | E 9 | — | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SSW 7 | SW 6 | SSE 6 | SSE 6 |
| kJ | — | 39 | — | 38 | 37 | 2 | 2 | 2 | — | 7 | 7 | 7 | — | 33 | 33 | 33 | 38 | 39 | 42 | 42 | 18 | 14 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 7 | SSE 7 | SSE 7 | SSE 6 | SW 6 | SSW 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 5 | 9 | 8 | 6 | 4 |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | SW 5 | — | — | SSW 5 | SSW 5 | SSW 6 | SSW 7 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | W 5 | W 5 | WNW 5 | WNW 4 | WNW 4 | W 4 | WNW 3 | WNW 3 | — | — | — |
| kJ | 28 | 36 | 23 | — | — | 20 | 48 | 136 | 383 | 1606 | 1619 | 1194 | 829 | 53 | 73 | 72 | 39 | 24 | 7 | 3 | 2 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 55 | 0 | 0 | 453 | 453 | 183 | 82 | 82 | 55 | 55 | 64 | 55 | 55 | 0 | 0 | 0 | 0 | 0 | 330 | 51 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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