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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Friday 24 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
19.5° 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 4AM is: 1.3m 9s primary swell from a East direction and 0.4m 7s secondary swell from a South-southeast direction (forecast issued at 08:00pm April 24). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Apr) | 6.5ft (2.0m) | 9s |
| Afternoon (25 Apr) | 5ft (1.6m) | 9s |
| Evening (25 Apr) | 8ft (2.5m) | 10s |
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 46mm), heaviest during Sun night. Warm (max 20°C on Mon morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 7 | ESE 7 | |
133 | 133 | 162 | 230 | 515 | 582 | 324 | 394 | 826 | 1129 | 1129 | 1044 | 963 | 782 | 850 | 1003 | 956 | 1145 | 889 | 584 | 583 | 276 | 164 | 114 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | glassy | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | off | cross-off | cross-off | off | cross-off | on | on | |
High Tide | 1:56AM1.46m | 12:24PM1.36m | 2:53AM1.53m | 2:14PM1.42m | 3:30AM1.59m | |||||||||||||||||||
Low Tide | 6:06PM0.51m | 7:33AM1.14m | 7:39PM0.55m | 8:49AM0.97m | 8:48PM0.56m | 9:35AM0.78m | ||||||||||||||||||
 |  |  | |  |  | | | |  | | | | | | | |  |  | |  |  | | | |
 | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — |
 | 6:42 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | 6:44 |
1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 6 | 15 | 14 | 7 | — | — | — | |
Temp °C | 12 | 12 | 12 | 12 | 13 | 16 | 19 | 19 | 18 | 17 | 16 | 15 | 16 | 18 | 18 | 18 | 16 | 15 | 15 | 15 | 14 | 18 | 20 | 20 |
9 | 9 | 9 | 9 | 11 | 14 | 17 | 18 | 17 | 16 | 15 | 14 | 15 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 18 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | S 6 | S 6 | — | — | — | — | — | — | SE 13 | SE 13 | SE 13 | SE 13 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 |
 kJ | 133 | 133 | 162 | 230 | 372 | 347 | 324 | 7 | 3 | — | — | — | — | — | — | 7 | 7 | 7 | 7 | 584 | 395 | 276 | 164 | 114 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SSE 7 | S 7 | SSE 7 | SSE 7 | S 7 | S 6 | SE 15 | SE 15 | — | — | — | — | — | — | — | — | — | — | SE 13 | SE 13 | SE 13 | S 6 | S 6 |
| kJ | 31 | 29 | 26 | 16 | 15 | 14 | 7 | 8 | 8 | — | — | — | — | — | — | — | — | — | — | 7 | 7 | 7 | 17 | 19 |
Swell 3 Height (m) Direction Period (s) | S 7 | SSW 7 | SW 7 | SSW 7 | SSW 7 | SE 12 | SE 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 | SE 12 | SE 12 |
| kJ | 28 | 21 | 12 | 9 | 5 | 6 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | N 3 | NNW 3 | ENE 9 | — | E 9 | E 9 | — | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — | E 8 | — | — | — |
| kJ | 1 | 1 | 413 | — | 515 | 582 | — | 394 | 826 | 1129 | 1129 | 1044 | 963 | 782 | 850 | 1003 | 956 | 1145 | 889 | — | 583 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 103 | 235 | 0 | 0 | 0 | 0 | 645 | 539 | 330 | 0 | 9 | 0 | 183 | 0 | 0 | 51 | 51 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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