Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 3.5ft (1.1m), 6s period with SE swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 3.5ft (1.0m), 9s period with ESE swell.
- Evening surf: Evening surf (17 Aug, local time) - 3ft (0.9m), 9s period with ESE swell.
The current surf forecast for Niyodo Rivermouth at 9AM is: 1.1m 6s primary swell from a Southeast direction and 0.6m 9s secondary swell from a East direction, 0.5m 8s secondary swell from a South direction (forecast issued at 02:00am August 17). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 3.5ft (1.1m) | 6s |
| Afternoon (17 Aug) | 3.5ft (1.0m) | 9s |
| Evening (17 Aug) | 3ft (0.9m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Mon morning. Warm (max 29°C on Wed morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | ESE 6 | ESE 6 | ESE 6 | SE 6 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 146 | 123 | 82 | 72 | 221 | 172 | 141 | 124 | 113 | 90 | 101 | 96 | 122 | 125 | 105 | 96 | 96 | 99 | 96 | 94 | 113 | 44 | 99 | 59 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | glassy | on | on | cross-on | cross | cross-off | cross-off | off | glassy | cross-on | on | cross-on | glassy | off | off | off | glassy | on | on | cross-on | glassy |
High Tide | 8:33AM1.68m | 8:43PM1.73m | 9:16AM1.53m | 9:06PM1.67m | 10:07AM1.38m | |||||||||||||||||||
Low Tide | 2:28AM0.48m | 2:33PM0.56m | 3:05AM0.49m | 2:58PM0.75m | 3:46AM0.54m | 3:21PM0.92m | ||||||||||||||||||
 | |  |  |  | | |  |  | | | | | | | | | |  | | | | |  | |
 | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:47 | — |
mm | 2 | 1 | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 25 | 25 | 24 | 25 | 28 | 28 | 27 | 26 | 25 | 24 | 24 | 28 | 28 | 28 | 27 | 26 | 25 | 25 | 24 | 28 | 29 | 29 | 27 | 26 |
Feels °C | 28 | 29 | 27 | 29 | 31 | 30 | 30 | 30 | 29 | 27 | 27 | 32 | 30 | 31 | 31 | 30 | 29 | 29 | 27 | 32 | 32 | 33 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | S 8 | E 10 | E 10 | E 9 | S 8 | S 8 | S 8 | SSW 8 | ESE 9 | ESE 9 | ESE 9 | SSW 8 | SSW 8 | SSW 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 10 | SE 10 | E 8 | ESE 8 | ESE 6 |
| kJ | 50 | 65 | 64 | 60 | 33 | 32 | 31 | 20 | 113 | 90 | 101 | 19 | 19 | 19 | 105 | 96 | 96 | 99 | 96 | 26 | 26 | 44 | 99 | 59 |
Swell 2 Height (m) Direction Period (s) | E 10 | S 8 | S 8 | S 8 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 8 | SSW 8 | SSW 8 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SSW 8 | SSW 8 | SE 10 | SE 10 | SE 10 |
| kJ | 68 | 34 | 33 | 33 | 30 | 30 | 30 | 30 | 19 | 19 | 19 | 30 | 29 | 29 | 27 | 28 | 29 | 27 | 27 | 11 | 11 | 25 | 25 | 26 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | SE 11 | — | SE 11 | SE 11 | — | SE 11 | SE 11 | SE 11 | S 10 | S 10 | SW 10 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 8 | SW 10 | SW 9 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 31 | 31 | 31 | 30 | — | 30 | 30 | — | 30 | 30 | 30 | 2 | 2 | 4 | 11 | 11 | 11 | 11 | 11 | 4 | 3 | 12 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | ESE 6 | ESE 6 | ESE 6 | SE 6 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | — | — | — | ESE 8 | ESE 8 | ESE 8 | — | — | — | — | — | ESE 8 | ESE 8 | ESE 4 | — | — |
| kJ | 146 | 123 | 82 | 72 | 221 | 172 | 141 | 124 | — | — | — | 96 | 122 | 125 | — | — | — | — | — | 94 | 113 | 18 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 29 | 0 | 0 | 0 | 539 | 539 | 539 | 29 | 0 | 0 | 0 | 0 | 330 | 585 | 58 | 0 | 0 | 0 | 0 | 0 | 432 | 58 | 58 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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