Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 1.5ft (0.4m), 10s period with ESE swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 2ft (0.6m), 8s period with S swell.
- Evening surf: Evening surf (20 Aug, local time) - 3ft (0.9m), 9s period with S swell.
The current surf forecast for Niyodo Rivermouth at 12PM is: 0.4m 10s primary swell from a East-southeast direction and 0.4m 7s secondary swell from a East-southeast direction, 0.4m 8s secondary swell from a South direction (forecast issued at 08:00am August 20). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 1.5ft (0.4m) | 10s |
| Afternoon (20 Aug) | 2ft (0.6m) | 8s |
| Evening (20 Aug) | 3ft (0.9m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 10 | ESE 10 | ESE 10 | S 8 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 26 | 38 | 38 | 51 | 102 | 129 | 126 | 152 | 152 | 171 | 183 | 168 | 164 | 165 | 135 | 138 | 135 | 135 | 106 | 103 | 96 | 72 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | on | on | glassy | glassy | glassy | off | glassy | glassy | on | on | glassy | glassy | glassy | glassy | glassy | glassy | on | on | glassy | glassy |
High Tide | 11:21AM1.24m | 9:56PM1.50m | 2:33PM1.21m | 10:41PM1.41m | 4:35PM1.33m | |||||||||||||||||
Low Tide | 4:36AM0.61m | 3:41PM1.08m | 5:50AM0.67m | 3:45PM1.21m | 7:39AM0.66m | 8:21PM1.28m | ||||||||||||||||
 | | | | |  | | | | |  | | | | | | | | | | | | |
 | 5:30 | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 27 | 29 | 29 | 28 | 26 | 25 | 25 | 25 | 28 | 29 | 29 | 28 | 26 | 26 | 25 | 25 | 28 | 29 | 29 | 28 | 26 |
Feels °C | 29 | 32 | 33 | 33 | 33 | 31 | 29 | 29 | 29 | 32 | 32 | 33 | 33 | 31 | 31 | 29 | 29 | 32 | 33 | 32 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | ESE 7 | S 8 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 |
| kJ | 26 | 26 | 16 | 51 | 102 | 129 | 126 | 152 | 152 | 171 | 183 | 168 | 164 | 165 | 135 | 138 | 135 | 135 | 106 | 103 | 96 | 72 |
Swell 2 Height (m) Direction Period (s) | SE 10 | ESE 10 | S 8 | ESE 7 | ESE 10 | SE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SE 11 | ESE 11 | ESE 11 | SE 11 | SE 11 | ESE 10 | E 10 | E 10 | E 10 | E 10 |
| kJ | 25 | 38 | 22 | 16 | 39 | 27 | 40 | 44 | 44 | 45 | 44 | 44 | 29 | 45 | 45 | 31 | 31 | 30 | 30 | 31 | 31 | 31 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | ESE 10 | ESE 10 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | E 9 | ESE 9 | ESE 9 | SE 11 | SE 11 | SE 10 | SE 10 | ESE 13 |
| kJ | 11 | 11 | 38 | 38 | 15 | 15 | 16 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 14 | 29 | 29 | 31 | 33 | 16 | 16 | 35 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 0 | 330 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 51 | 51 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
Header Global | ||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Niyodo Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest