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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Sunday 26 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
19.4° 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 9AM is: 3.0m 8s primary swell from a East-southeast direction (forecast issued at 02:00am April 26). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Apr) | 10ft (3.0m) | 8s |
| Afternoon (26 Apr) | 10ft (3.0m) | 9s |
| Evening (26 Apr) | 10ft (3.0m) | 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 61mm), heaviest during Sun night. Warm (max 22°C on Mon morning, min 14°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||||||||||
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 9 | ESE 10 | ESE 10 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 7 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | |
979 | 940 | 1044 | 1201 | 1366 | 1398 | 1390 | 1384 | 887 | 456 | 250 | 143 | 117 | 73 | 57 | 40 | 39 | 27 | 27 | 23 | 23 | 22 | 22 | 22 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | off | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | off | cross-off | off | glassy | glassy | on | on | glassy | cross-off | |
High Tide | 2:53AM1.53m | 2:14PM1.42m | 3:30AM1.59m | 3:24PM1.52m | 3:59AM1.65m | 4:15PM1.62m | ||||||||||||||||||
Low Tide | 8:49AM0.97m | 8:48PM0.56m | 9:35AM0.78m | 9:39PM0.57m | 10:10AM0.61m | |||||||||||||||||||
 |  |  | |  | | |  | |  |  | | | | | | | |  | | | | | | |
 | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:45 | — |
— | — | 1 | 1 | — | — | 3 | 17 | 40 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 16 | 17 | 18 | 18 | 17 | 16 | 16 | 15 | 14 | 19 | 22 | 20 | 19 | 17 | 16 | 16 | 16 | 19 | 20 | 21 | 20 | 19 |
15 | 16 | 16 | 17 | 15 | 15 | 14 | 15 | 15 | 14 | 13 | 18 | 22 | 19 | 20 | 18 | 16 | 16 | 16 | 20 | 20 | 22 | 22 | 20 | |
Swell 1 Height (m) Direction Period (s) | — | SW 7 | SW 7 | — | — | — | SE 13 | SE 13 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 7 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 7 |
 kJ | — | 2 | 2 | — | — | — | 7 | 7 | 887 | 456 | 250 | 143 | 117 | 73 | 57 | 40 | 39 | 27 | 27 | 18 | 18 | 18 | 11 | 10 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 7 | SE 13 | SE 13 | S 6 | S 6 | S 6 | S 6 | SSW 6 | S 6 | SSW 6 | S 6 | SW 6 | SSW 5 | SSW 5 | SE 12 | SE 12 | SE 12 |
| kJ | — | — | — | — | — | — | — | 2 | 7 | 7 | 24 | 49 | 39 | 28 | 29 | 18 | 19 | 16 | 8 | 5 | 3 | 22 | 22 | 22 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SE 13 | SE 13 | ESE 13 | SE 12 | SE 12 | SE 12 | SE 12 | ESE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SSE 5 | SE 5 | E 10 |
| kJ | — | — | — | — | — | — | — | — | — | 7 | 7 | 16 | 23 | 23 | 23 | 23 | 14 | 23 | 23 | 23 | 23 | 2 | 1 | 2 |
Wind waves Height (m) Direction Period (s) | ESE 9 | ESE 10 | ESE 10 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | — | — | — | — | NNW 2 | — | — | E 2 | ENE 4 | E 3 | ENE 3 | — | — | SW 5 | SSW 3 | SSW 4 |
| kJ | 979 | 940 | 1044 | 1201 | 1366 | 1398 | 1390 | 1384 | — | — | — | — | 1 | — | — | 1 | 2 | 3 | 1 | — | — | 6 | 4 | 10 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 9 | 224 | 224 | 224 | 224 | 0 | 0 | 0 | 0 | 0 | 55 | 51 | 0 | 0 | 0 | 0 | 233 | 283 | 647 | 233 | 1505 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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