Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 3.5ft (1.0m), 9s period with S swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 3.5ft (1.0m), 9s period with S swell.
- Evening surf: Evening surf (21 Aug, local time) - 3.5ft (1.0m), 9s period with S swell.
The current surf forecast for Niyodo Rivermouth at 7AM is: 1.0m 9s primary swell from a South direction and 0.4m 11s secondary swell from a East-southeast direction (forecast issued at 02:00am August 21). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 3.5ft (1.0m) | 9s |
| Afternoon (21 Aug) | 3.5ft (1.0m) | 9s |
| Evening (21 Aug) | 3.5ft (1.0m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||||
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) | S 9 | S 9 | S 9 | S 9 | S 10 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 126 | 152 | 152 | 171 | 183 | 168 | 164 | 160 | 135 | 138 | 135 | 135 | 106 | 103 | 96 | 73 | 72 | 72 | 73 | 80 | 82 | 57 | 64 | 120 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | glassy | glassy | on | on | glassy | glassy | glassy | glassy | glassy | glassy | on | on | glassy | glassy | glassy | glassy | glassy | glassy | on | on | on | glassy |
High Tide | 9:56PM1.50m | 2:33PM1.21m | 10:41PM1.41m | 4:35PM1.33m | 00:46AM1.36m | 4:50PM1.43m | ||||||||||||||||||
Low Tide | 5:50AM0.67m | 3:45PM1.21m | 7:39AM0.66m | 8:21PM1.28m | 9:06AM0.57m | |||||||||||||||||||
 |  |  | |  | | | | | | | | | | | | | | | | | | | | |
 | — | 5:30 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 28 | 29 | 28 | 28 | 26 | 26 | 25 | 25 | 28 | 29 | 29 | 28 | 26 | 26 | 25 | 25 | 28 | 29 | 29 | 28 | 27 |
Feels °C | 31 | 29 | 29 | 33 | 33 | 32 | 33 | 32 | 31 | 30 | 30 | 33 | 32 | 33 | 33 | 31 | 31 | 29 | 29 | 32 | 31 | 32 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 9 | S 10 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 |
| kJ | 126 | 152 | 152 | 171 | 183 | 168 | 164 | 160 | 135 | 138 | 135 | 135 | 106 | 103 | 96 | 73 | 72 | 72 | 73 | 80 | 82 | 57 | 64 | 65 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SE 11 | ESE 11 | ESE 11 | SE 11 | SE 11 | ESE 10 | ESE 12 | ESE 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | SE 12 |
| kJ | 40 | 44 | 44 | 45 | 44 | 44 | 29 | 45 | 45 | 31 | 31 | 30 | 45 | 35 | 17 | 31 | 31 | 30 | 31 | 35 | 31 | 30 | 30 | 120 |
Swell 3 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | E 9 | ESE 9 | ESE 9 | SE 11 | SE 10 | SE 10 | ESE 10 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | SE 11 | SE 11 | SE 11 | SE 5 | E 9 |
| kJ | 16 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 14 | 29 | 29 | 31 | 17 | 16 | 10 | 35 | 34 | 35 | 55 | 29 | 29 | 29 | 7 | 27 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 51 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 82 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 51 | 51 | 51 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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