Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (31 Aug):
- Morning surf: Morning surf (31 Aug, local time) - 2.5ft (0.7m), 8s period with S swell.
- 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 9AM is: 0.7m 8s primary swell from a South direction and 0.3m 10s secondary swell from a Southeast direction, 0.4m 4s secondary swell from a South-southwest direction (forecast issued at 02:00am August 31). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Aug) | 2.5ft (0.7m) | 8s |
| 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 ForecastModerate rain (total 13mm), heaviest on Wed night. Warm (max 30°C on Mon morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||||||||||
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) | SSW 7 | SSW 8 | SSW 8 | S 8 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | S 9 | ESE 14 | E 14 | E 13 | E 13 | E 13 | E 12 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 69 | 87 | 94 | 68 | 99 | 96 | 99 | 79 | 73 | 71 | 96 | 92 | 126 | 121 | 148 | 144 | 155 | 202 | 216 | 268 | 277 | 261 | 254 | 207 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | glassy | on | on | on | glassy | glassy | glassy | cross-off | glassy | on | on | cross-on | cross | glassy | cross-off | cross-off | glassy | on | on | cross-on | glassy |
High Tide | 7:27AM1.82m | 7:43PM1.84m | 8:08AM1.74m | 8:08PM1.81m | 8:53AM1.62m | 8:36PM1.75m | ||||||||||||||||||
Low Tide | 1:22AM0.42m | 1:34PM0.40m | 1:56AM0.37m | 2:03PM0.55m | 2:34AM0.36m | 2:35PM0.72m | ||||||||||||||||||
 |  |  | | | | | |  | | | | | | | | | |  |  | | | | | |
 | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 1 | 3 | 1 |
Temp °C | 26 | 26 | 26 | 28 | 30 | 30 | 28 | 27 | 27 | 27 | 25 | 28 | 29 | 30 | 28 | 26 | 26 | 25 | 25 | 28 | 30 | 29 | 28 | 27 |
Feels °C | 31 | 30 | 30 | 33 | 34 | 34 | 32 | 33 | 32 | 32 | 28 | 31 | 31 | 32 | 31 | 30 | 31 | 29 | 29 | 33 | 33 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 8 | SSW 8 | S 8 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | S 9 | S 8 | S 8 | S 8 | SSE 8 | SSE 8 | S 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | E 11 | E 11 | E 11 | E 11 |
| kJ | 69 | 87 | 94 | 68 | 99 | 96 | 99 | 79 | 73 | 71 | 69 | 66 | 83 | 96 | 112 | 143 | 155 | 202 | 216 | 268 | 121 | 121 | 114 | 83 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | 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 | SE 11 | SE 11 | SE 9 | SE 11 |
| kJ | 16 | 26 | 17 | 16 | 25 | 24 | 24 | 24 | 37 | 66 | 96 | 92 | 126 | 121 | 148 | 144 | 139 | 134 | 125 | 119 | 18 | 18 | 23 | 18 |
Swell 3 Height (m) Direction Period (s) | E 11 | E 11 | E 11 | SSW 10 | E 11 | E 11 | E 14 | E 14 | SE 10 | SE 10 | SE 10 | SE 9 | SW 8 | SE 9 | SSW 9 | SSW 9 | SE 9 | SE 10 | SE 9 | SE 10 | — | E 16 | E 15 | E 15 |
| kJ | 21 | 21 | 9 | 10 | 9 | 9 | 16 | 37 | 15 | 15 | 15 | 22 | 18 | 14 | 15 | 16 | 14 | 14 | 14 | 16 | — | 5 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | SW 4 | — | SW 4 | SSW 4 | SW 4 | — | — | — | — | — | — | E 5 | E 5 | E 5 | E 5 | — | — | — | — | E 5 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
| kJ | 14 | — | 8 | 6 | 5 | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | 1 | 277 | 261 | 254 | 207 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 51 | 51 | 51 | 0 | 0 | 0 | 0 | 0 | 330 | 58 | 58 | 9 | 0 | 0 | 0 | 0 | 29 | 29 | 29 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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