Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 3ft (0.9m), 10s period with SSW swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 2.5ft (0.8m), 9s period with S swell.
- Evening surf: Evening surf (12 Aug, local time) - 2.5ft (0.8m), 9s period with SSW swell.
The current surf forecast for Niyodo Rivermouth at 9AM is: 0.9m 10s primary swell from a South-southwest direction and 0.7m 11s secondary swell from a East direction (forecast issued at 02:00am August 12). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 3ft (0.9m) | 10s |
| Afternoon (12 Aug) | 2.5ft (0.8m) | 9s |
| Evening (12 Aug) | 2.5ft (0.8m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Thu afternoon. Warm (max 29°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||||||||||
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 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | S 9 | SSW 10 | SSW 9 | SSW 9 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | E 11 | E 10 | E 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 265 | 270 | 222 | 191 | 120 | 108 | 120 | 115 | 144 | 94 | 144 | 113 | 110 | 110 | 110 | 108 | 106 | 106 | 101 | 99 | 99 | 108 | 100 | 96 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | on | cross-on | glassy | glassy | glassy | cross-off | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | glassy | on | on | on | glassy |
High Tide | 4:53AM1.82m | 6:28PM1.85m | 5:42AM1.90m | 6:59PM1.87m | 6:27AM1.93m | 7:27PM1.86m | ||||||||||||||||||
Low Tide | 11:23PM0.92m | 11:43AM-0.03m | 00:02AM0.79m | 12:23PM-0.02m | 00:40AM0.67m | 1:00PM0.06m | ||||||||||||||||||
 | |  | |  |  |  |  | | | | |  | | |  |  | | | | | | | | |
 | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:52 | — |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 1 | 3 | — | 1 | 1 | 1 | — | — | 1 | — | — | — |
Temp °C | 22 | 22 | 24 | 28 | 29 | 27 | 26 | 26 | 25 | 24 | 24 | 27 | 28 | 28 | 27 | 25 | 25 | 24 | 24 | 27 | 28 | 28 | 27 | 25 |
Feels °C | 22 | 22 | 25 | 30 | 30 | 30 | 30 | 30 | 28 | 27 | 27 | 30 | 30 | 30 | 29 | 28 | 28 | 27 | 27 | 30 | 30 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | S 9 | SSW 10 | SSW 9 | SSW 9 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 8 |
| kJ | 265 | 270 | 222 | 191 | 120 | 108 | 120 | 115 | 144 | 94 | 144 | 113 | 110 | 110 | 110 | 108 | 106 | 106 | 101 | 99 | 99 | 94 | 73 | 71 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 12 | E 11 | E 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | E 10 | SSW 9 | E 10 | E 10 | SE 12 | E 10 | E 9 | E 9 | E 9 | E 10 | E 9 | E 10 | E 11 | E 11 | E 10 | E 10 |
| kJ | 174 | 171 | 121 | 116 | 90 | 68 | 40 | 40 | 32 | 58 | 30 | 30 | 22 | 45 | 42 | 27 | 28 | 44 | 27 | 69 | 79 | 108 | 100 | 96 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 13 | S 10 | E 11 | E 11 | E 11 | E 11 | SSW 10 | E 10 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | E 5 | E 5 | E 5 | E 5 | E 5 | SE 11 | SE 11 | SE 11 | SE 11 |
| kJ | 27 | 27 | 27 | 31 | 83 | 56 | 56 | 35 | 20 | 31 | 23 | 23 | 22 | 22 | 22 | 2 | 4 | 5 | 5 | 5 | 19 | 19 | 19 | 19 |
Wind waves Height (m) Direction Period (s) | — | N 2 | NNW 2 | NNW 3 | — | — | — | — | — | — | — | E 4 | E 10 | — | SSW 3 | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 1 | 1 | — | — | — | — | — | — | — | 1 | 46 | — | 1 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 82 | 58 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 55 | 55 | 29 | 0 | 0 | 0 | 0 | 58 | 58 | 51 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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