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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Monday 11 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
20.3° 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 7AM is: 0.8m 10s primary swell from a East-southeast direction (forecast issued at 02:00am May 11). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 2.5ft (0.8m) | 9s |
| Afternoon (11 May) | 2.5ft (0.8m) | 9s |
| Evening (11 May) | 3ft (0.9m) | 10s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Wed morning. Warm (max 21°C on Mon morning, min 15°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 11 | Tuesday 12 | Wednesday 13 | ||||||||||||||||||||||
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 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | |
122 | 120 | 115 | 110 | 108 | 108 | 136 | 145 | 148 | 148 | 157 | 226 | 370 | 424 | 415 | 415 | 393 | 340 | 340 | 340 | 340 | 340 | 340 | 280 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | glassy | on | on | cross-on | cross-off | off | off | off | glassy | on | cross-on | cross-on | glassy | cross-off | cross-off | off | glassy | glassy | on | glassy | off | |
High Tide | 1:40AM1.47m | 1:04PM1.33m | 2:23AM1.55m | 2:27PM1.44m | 3:00AM1.64m | 3:30PM1.57m | ||||||||||||||||||
Low Tide | 7:43AM0.99m | 7:34PM0.66m | 8:37AM0.81m | 8:35PM0.65m | 9:20AM0.60m | |||||||||||||||||||
 | |  | | | | | | | |  | | | | |  | | |  | |  |  | | | |
 | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:55 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | |
Temp °C | 17 | 16 | 16 | 19 | 21 | 21 | 20 | 17 | 16 | 15 | 15 | 20 | 20 | 21 | 20 | 18 | 17 | 17 | 17 | 19 | 19 | 20 | 19 | 17 |
16 | 15 | 15 | 19 | 20 | 19 | 19 | 16 | 15 | 14 | 13 | 20 | 19 | 19 | 20 | 18 | 17 | 17 | 17 | 20 | 20 | 19 | 20 | 17 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
 kJ | 122 | 120 | 115 | 110 | 108 | 108 | 136 | 145 | 148 | 148 | 157 | 226 | 370 | 424 | 415 | 415 | 393 | 340 | 340 | 340 | 340 | 340 | 340 | 280 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 12 | S 12 | S 12 | S 12 | S 11 | E 5 | — | — | — | — | — | — | — | — | — | — | S 8 | S 8 | S 8 |
| kJ | — | — | — | — | — | 3 | 3 | 3 | 3 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | 5 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 12 | S 11 | S 11 | S 11 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 3 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 3 | ESE 3 | E 3 | — | ENE 4 | — | — | — | — | — | — | — | — | E 4 | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | 9 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 645 | 58 | 29 | 0 | 0 | 0 | 0 | 0 | 29 | 58 | 58 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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