Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 4.5ft (1.4m), 9s period with SE swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 5ft (1.6m), 13s period with SE swell.
- Evening surf: Evening surf (20 Oct, local time) - 6ft (1.8m), 13s period with SE swell.
The current surf forecast for Niyodo Rivermouth at 10AM is: 1.4m 9s primary swell from a Southeast direction and 0.8m 13s secondary swell from a Southeast direction (forecast issued at 02:00am October 20). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 4.5ft (1.4m) | 9s |
| Afternoon (20 Oct) | 5ft (1.6m) | 13s |
| Evening (20 Oct) | 6ft (1.8m) | 13s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Tue morning. Warm (max 27°C on Wed afternoon, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||||||||||||
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 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 13 | SE 14 | SE 13 | SE 13 | SSE 14 | SSE 14 | SSE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 15 | SSE 15 | SSE 14 | S 14 | SSE 14 | S 13 | S 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 212 | 304 | 318 | 325 | 246 | 865 | 1480 | 1092 | 1083 | 1388 | 1560 | 1259 | 1470 | 3197 | 3373 | 2899 | 3774 | 3691 | 3544 | 3207 | 2772 | 2334 | 1585 | 3461 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | glassy | on | glassy | glassy | glassy | cross-on | cross-on | glassy | cross-on | on | on | cross-off | off | cross-off | off | off | off | off | off | off | off |
High Tide | 11:26PM1.27m | 2:53PM1.42m | 1:44AM1.32m | 3:20PM1.52m | 2:53AM1.44m | 3:45PM1.61m | ||||||||||||||||||
Low Tide | 7:20AM0.70m | 8:43PM1.07m | 8:28AM0.64m | 9:18PM0.90m | 9:14AM0.57m | |||||||||||||||||||
 | |  |  |  | | |  | | | |  | |  | | |  |  | | | | | | | |
 | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — |
 | — | — | — | — | — | 5:25 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:23 | — | — |
mm | 2 | 1 | — | — | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 24 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 25 | 26 | 27 | 24 | 21 | 19 | 19 | 16 | 17 | 21 | 21 | 17 | 15 |
Feels °C | 27 | 27 | 27 | 29 | 28 | 29 | 28 | 28 | 27 | 26 | 27 | 28 | 28 | 29 | 26 | 21 | 19 | 18 | 13 | 14 | 18 | 18 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 13 | SE 14 | SE 13 | SE 13 | SSE 14 | SSE 14 | SE 13 | SSE 17 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 15 | SSE 15 | SSE 14 | S 14 | SSE 14 | S 13 | S 15 |
| kJ | 212 | 304 | 318 | 325 | 246 | 865 | 1480 | 1092 | 1083 | 1388 | 1560 | 946 | 1470 | 3197 | 3373 | 2899 | 3774 | 3691 | 3544 | 3207 | 2772 | 2334 | 1585 | 3461 |
Swell 2 Height (m) Direction Period (s) | S 6 | SE 15 | SE 14 | SE 13 | SE 13 | SSE 15 | SSE 15 | SSE 18 | SSE 17 | SSE 17 | SSE 18 | SSE 17 | SE 13 | ESE 10 | SW 5 | S 19 | E 9 | S 16 | NE 6 | ESE 9 | ESE 9 | S 18 | S 16 | ESE 10 |
| kJ | 41 | 106 | 99 | 176 | 239 | 256 | 249 | 263 | 394 | 492 | 516 | 1259 | 878 | 72 | 58 | 1059 | 83 | 1388 | 69 | 110 | 88 | 881 | 1222 | 81 |
Swell 3 Height (m) Direction Period (s) | SE 16 | SE 19 | SSE 18 | SSE 17 | SSE 16 | — | SSE 19 | SSE 16 | — | — | — | — | ESE 9 | — | ESE 10 | ESE 10 | — | — | — | ESE 9 | NE 6 | ESE 9 | E 9 | — |
| kJ | 118 | 92 | 123 | 168 | 226 | — | 201 | 146 | — | — | — | — | 88 | — | 71 | 72 | — | — | — | 73 | 26 | 73 | 133 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 4 | SSW 4 | — | SSW 5 | SSW 5 | SW 5 | — | WSW 5 | — | — | — | NNE 4 | — | ENE 5 | ENE 6 | ENE 6 |
| kJ | — | — | — | — | — | — | — | — | 8 | 20 | — | 28 | 42 | 57 | — | 31 | — | — | — | 19 | — | 26 | 68 | 96 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 29 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 51 | 51 | 0 | 51 | 51 | 51 | 0 | 0 | 9 | 9 | 9 | 9 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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