Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (13 Aug):
- Morning surf: Morning surf (13 Aug, local time) - 2.5ft (0.8m), 9s period with SSW swell.
- Afternoon surf: Afternoon surf (13 Aug, local time) - 2.5ft (0.8m), 9s period with SSW swell.
- Evening surf: Evening surf (13 Aug, local time) - 2.5ft (0.8m), 9s period with SSW swell.
The current surf forecast for Niyodo Rivermouth at 8AM is: 0.9m 9s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a East direction, 0.4m 4s secondary swell from a East direction (forecast issued at 02:00am August 13). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Aug) | 2.5ft (0.8m) | 9s |
| Afternoon (13 Aug) | 2.5ft (0.8m) | 9s |
| Evening (13 Aug) | 2.5ft (0.8m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Thu morning. Warm (max 28°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||||||||||
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 9 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 9 | E 11 | E 10 | E 10 | E 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | E 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 144 | 94 | 144 | 113 | 110 | 110 | 110 | 108 | 106 | 78 | 96 | 94 | 94 | 108 | 100 | 96 | 96 | 127 | 122 | 117 | 106 | 79 | 78 | 94 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-off | glassy | cross-off | glassy | on | on | on | glassy | off | glassy | cross-off | glassy | on | on | cross-on | cross-off |
High Tide | 5:42AM1.90m | 6:59PM1.87m | 6:27AM1.93m | 7:27PM1.86m | 7:10AM1.89m | 7:54PM1.84m | ||||||||||||||||||
Low Tide | 00:02AM0.79m | 12:23PM-0.02m | 00:40AM0.67m | 1:00PM0.06m | 1:16AM0.57m | 1:33PM0.19m | ||||||||||||||||||
 |  |  |  | | | |  | |  |  | | | | | | | | | | | | | | |
 | — | 5:24 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — |
mm | — | — | — | 1 | 3 | 2 | — | — | — | 1 | — | — | — | 1 | — | — | — | — | — | — | — | 1 | 1 | 1 |
Temp °C | 25 | 25 | 25 | 27 | 27 | 28 | 27 | 26 | 24 | 24 | 24 | 27 | 28 | 28 | 27 | 25 | 24 | 24 | 24 | 27 | 28 | 28 | 27 | 26 |
Feels °C | 28 | 28 | 28 | 29 | 29 | 30 | 30 | 29 | 27 | 27 | 27 | 30 | 30 | 30 | 30 | 29 | 27 | 27 | 27 | 30 | 30 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 |
| kJ | 144 | 94 | 144 | 113 | 110 | 110 | 110 | 108 | 106 | 78 | 96 | 94 | 94 | 73 | 73 | 71 | 71 | 127 | 122 | 117 | 106 | 79 | 78 | 76 |
Swell 2 Height (m) Direction Period (s) | E 10 | SSW 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 10 | E 9 | E 10 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
| kJ | 32 | 58 | 31 | 30 | 30 | 29 | 27 | 27 | 28 | 44 | 27 | 68 | 79 | 108 | 100 | 96 | 96 | 71 | 72 | 72 | 71 | 71 | 71 | 94 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | E 10 | E 4 | SE 12 | SE 12 | SE 12 | ESE 3 | E 4 | E 4 | E 5 | E 5 | E 5 | SE 11 | SE 11 | SE 11 | S 11 | S 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 8 | SE 10 | SE 8 |
| kJ | 20 | 31 | 3 | 23 | 22 | 22 | 2 | 2 | 3 | 4 | 5 | 5 | 19 | 19 | 19 | 22 | 38 | 18 | 18 | 18 | 17 | 10 | 16 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | E 3 | ESE 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 5 |
| kJ | — | — | — | 6 | 5 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 21 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 29 | 82 | 55 | 29 | 29 | 0 | 0 | 0 | 0 | 82 | 58 | 29 | 0 | 0 | 0 | 0 | 0 | 82 | 29 | 29 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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