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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Sunday 03 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 7AM is: 0.4m 10s primary swell from a East-southeast direction and 0.5m 4s secondary swell from a South-southwest direction, 0.9m 5s secondary swell from a South-southwest direction (forecast issued at 02:00am May 03). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 May) | 2.5ft (0.8m) | 5s |
| Afternoon (03 May) | 5ft (1.6m) | 6s |
| Evening (03 May) | 13ft (4.0m) | 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 60mm), heaviest during Sun night. Warm (max 22°C on Sun night, min 13°C on Mon night). Winds decreasing (fresh winds from the SSW on Sun night, calm by Tue morning). | ||||||||||||||||||||||||
Sunday 3 | Monday 4 | Tuesday 5 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | SSW 5 | SSW 5 | SSW 6 | SSW 7 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SW 7 | SW 7 | SW 7 | SW 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | |
38 | 38 | 37 | 34 | 59 | 172 | 538 | 1816 | 1569 | 1083 | 682 | 460 | 344 | 232 | 158 | 107 | 64 | 42 | 42 | 41 | 41 | 58 | 57 | 57 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | glassy | glassy | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | off | off | off | glassy | on | on | glassy | cross-off | |
High Tide | 6:02AM1.75m | 7:20PM1.72m | 6:27AM1.73m | 7:55PM1.66m | 6:53AM1.69m | 8:33PM1.57m | ||||||||||||||||||
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 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:50 | — |
— | — | — | — | 1 | 6 | 22 | 29 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 17 | 17 | 19 | 19 | 19 | 20 | 22 | 21 | 19 | 16 | 18 | 19 | 19 | 17 | 15 | 14 | 13 | 13 | 17 | 18 | 18 | 17 | 15 |
17 | 16 | 17 | 20 | 20 | 19 | 19 | 19 | 22 | 18 | 14 | 15 | 12 | 12 | 13 | 13 | 12 | 11 | 10 | 16 | 16 | 16 | 16 | 12 | |
Swell 1 Height (m) Direction Period (s) | SSW 5 | ESE 10 | SSW 4 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SW 7 | SW 7 | SW 7 | SW 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
 kJ | 15 | 38 | 12 | 34 | 34 | 50 | 37 | 38 | 37 | 38 | 682 | 460 | 344 | 232 | 158 | 107 | 64 | 38 | 28 | 41 | 41 | 58 | 57 | 57 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | SSW 4 | ESE 10 | E 9 | E 9 | E 9 | — | E 9 | E 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 6 | SSE 6 | SSE 6 | S 6 | S 6 |
| kJ | 38 | 7 | 37 | 2 | 2 | 6 | — | 7 | 7 | 32 | 32 | 38 | 38 | 38 | 38 | 39 | 42 | 42 | 42 | 11 | 7 | 7 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | ESE 10 | — | — | — | — | — | SSE 6 | SSE 6 | SSE 6 | SW 6 | SSW 6 | SW 7 | SW 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 38 | — | — | — | — | — | 8 | 4 | 8 | 6 | 4 | 2 | 1 |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 7 | SSW 8 | SSW 9 | SSW 9 | W 5 | W 5 | W 5 | WNW 5 | WNW 4 | NW 4 | WNW 4 | WNW 4 | NNW 3 | — | — | — | — | — |
| kJ | 17 | 14 | 27 | 26 | 59 | 172 | 538 | 1816 | 1569 | 1083 | 52 | 51 | 94 | 78 | 36 | 2 | 22 | 12 | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 1479 | 1479 | 1492 | 183 | 183 | 65 | 55 | 55 | 82 | 63 | 55 | 0 | 0 | 0 | 0 | 0 | 330 | 51 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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