Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (31 Aug):
- Afternoon surf: Afternoon surf (31 Aug, local time) - 2.5ft (0.8m), 8s period with SSW swell.
- Evening surf: Evening surf (31 Aug, local time) - 2.5ft (0.7m), 9s period with SSW swell.
The current surf forecast for Niyodo Rivermouth at 10PM is: 0.7m 9s primary swell from a South direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 02:00pm August 31). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Aug) | - | - |
| Afternoon (31 Aug) | 2.5ft (0.8m) | 8s |
| Evening (31 Aug) | 2.5ft (0.7m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Wed afternoon. Warm (max 30°C on Mon afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||||||
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) | SSW 9 | SSW 8 | SSW 9 | SSW 9 | S 9 | ESE 14 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 | S 8 | SSE 8 | SSE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 99 | 96 | 99 | 79 | 73 | 71 | 96 | 92 | 126 | 121 | 148 | 144 | 157 | 159 | 138 | 232 | 294 | 308 | 280 | 261 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | glassy | glassy | glassy | glassy | cross-on | on | on | cross-on | glassy | cross-off | cross-off | off | glassy | on | on | cross-on | cross |
High Tide | 7:43PM1.84m | 8:08AM1.74m | 8:08PM1.81m | 8:53AM1.62m | 8:36PM1.75m | |||||||||||||||
Low Tide | 1:56AM0.37m | 2:03PM0.55m | 2:34AM0.36m | 2:35PM0.72m | ||||||||||||||||
 |  | |  |  | | | | | | | | | |  | | |  | |  | |
 | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — |
 | — | — | 6:32 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | — |
Temp °C | 30 | 30 | 28 | 27 | 27 | 27 | 26 | 28 | 29 | 29 | 28 | 26 | 25 | 25 | 25 | 27 | 29 | 29 | 27 | 27 |
Feels °C | 34 | 34 | 33 | 33 | 33 | 32 | 30 | 31 | 31 | 31 | 32 | 30 | 29 | 28 | 28 | 31 | 32 | 32 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 8 | SSW 9 | SSW 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | SSE 8 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 |
| kJ | 99 | 96 | 99 | 79 | 73 | 71 | 69 | 68 | 63 | 76 | 94 | 115 | 157 | 159 | 138 | 232 | 294 | 308 | 280 | 261 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | E 14 | ESE 14 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 |
| kJ | 25 | 24 | 24 | 24 | 37 | 66 | 96 | 92 | 126 | 121 | 148 | 144 | 139 | 134 | 125 | 119 | 121 | 121 | 114 | 83 |
Swell 3 Height (m) Direction Period (s) | E 11 | E 11 | E 14 | E 14 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SSW 9 | SSW 10 | SE 10 | SE 9 | S 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 |
| kJ | 9 | 9 | 16 | 37 | 15 | 15 | 15 | 22 | 22 | 14 | 15 | 18 | 14 | 14 | 66 | 16 | 16 | 27 | 29 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | E 5 | E 5 | — | — | — | E 6 | E 6 | E 6 | E 6 | E 5 | E 4 | — |
| kJ | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 3 | 3 | 2 | 2 | 1 | 9 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 51 | 51 | 51 | 0 | 0 | 0 | 0 | 29 | 58 | 539 | 58 | 0 | 0 | 0 | 0 | 0 | 539 | 29 | 29 | 29 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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