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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 pm Thursday 23 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
19.3° 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 7PM is: 1.7m 8s primary swell from a South direction and 0.9m 10s secondary swell from a East direction (forecast issued at 02:00pm April 23). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | - | - |
| Afternoon (23 Apr) | 5ft (1.6m) | 7s |
| Evening (23 Apr) | 5ft (1.6m) | 8s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Thu afternoon. Very mild (max 19°C on Sat afternoon, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sun 26 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 10 | S 7 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 8 | S 8 | E 9 | E 9 | E 9 | E 8 | E 8 | E 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | |
314 | 264 | 374 | 333 | 294 | 212 | 145 | 118 | 94 | 72 | 133 | 123 | 148 | 191 | 382 | 607 | 552 | 920 | 1193 | 1337 | 1394 | 1295 | 1177 | 1083 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | off | off | off | off | off | off | glassy | off | cross-off | off | glassy | glassy | glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 00:20AM1.44m | 10:13AM1.44m | 1:56AM1.46m | 12:24PM1.36m | 2:53AM1.53m | |||||||||||||||||||
Low Tide | 4:34PM0.39m | 5:12AM1.22m | 6:06PM0.51m | 7:33AM1.14m | 7:39PM0.55m | 8:49AM0.97m | ||||||||||||||||||
 |  |  |  | | |  | | | | | | |  | | | | | |  | | | | | |
 | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:22 | — | — |
 | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | 6:43 |
17 | 10 | 2 | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 15 | 14 | 13 | 13 | 12 | 11 | 12 | 15 | 18 | 19 | 17 | 16 | 15 | 15 | 15 | 17 |
16 | 15 | 15 | 13 | 13 | 13 | 13 | 12 | 13 | 12 | 12 | 11 | 9 | 8 | 10 | 14 | 17 | 17 | 16 | 15 | 14 | 14 | 13 | 16 | |
Swell 1 Height (m) Direction Period (s) | S 6 | S 7 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSW 8 | ENE 8 | E 9 | E 9 | E 9 | E 8 | E 8 | E 9 | S 6 | — | — | — | — | — | — | — |
 kJ | 78 | 264 | 374 | 333 | 294 | 212 | 145 | 118 | 94 | 75 | 133 | 123 | 148 | 191 | 228 | 355 | 7 | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | SE 13 | E 10 | E 10 | E 10 | E 10 | E 10 | ENE 5 | E 7 | E 7 | S 8 | SSW 7 | SSW 7 | SSE 7 | SSE 7 | S 7 | S 7 | S 15 | — | — | — | — | — | — | — |
| kJ | 84 | 186 | 181 | 116 | 89 | 67 | 8 | 48 | 64 | 72 | 30 | 21 | 17 | 16 | 14 | 8 | 4 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | E 7 | SE 12 | E 9 | E 9 | SSE 8 | SSE 7 | SE 12 | SE 12 | ESE 12 | SE 12 | — | — | — | — | — | — | — | — |
| kJ | 84 | 61 | 60 | 60 | 42 | 41 | 17 | 37 | 27 | 28 | 19 | 16 | 22 | 22 | 14 | 6 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 10 | — | N 4 | — | NE 6 | NE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 4 | E 8 | NNE 5 | E 8 | E 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 314 | — | 6 | — | 89 | 99 | 145 | 82 | 99 | 218 | 236 | 12 | 279 | 25 | 382 | 607 | 552 | 920 | 1193 | 1337 | 1394 | 1295 | 1177 | 1083 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 61 | 224 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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