Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 2.5ft (0.8m), 8s period with ESE swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 2.5ft (0.8m), 6s period with ESE swell.
- Evening surf: Evening surf (18 Aug, local time) - 2.5ft (0.8m), 8s period with ESE swell.
The current surf forecast for Niyodo Rivermouth at 6AM is: 0.7m 9s primary swell from a East-southeast direction and 0.5m 8s secondary swell from a South direction (forecast issued at 02:00am August 18). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2.5ft (0.8m) | 8s |
| Afternoon (18 Aug) | 2.5ft (0.8m) | 6s |
| Evening (18 Aug) | 2.5ft (0.8m) | 8s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 29°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 6 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 10 | S 8 | S 9 | S 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 106 | 82 | 79 | 96 | 94 | 36 | 90 | 90 | 96 | 96 | 90 | 87 | 87 | 89 | 83 | 64 | 57 | 42 | 40 | 38 | 38 | 50 | 106 | 129 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | glassy | cross-on | cross-on | cross-on | cross-off | glassy | glassy | cross-off | glassy | on | on | cross-on | glassy | glassy | off | glassy | glassy | cross-on | on | glassy | glassy |
High Tide | 9:16AM1.53m | 9:06PM1.67m | 10:07AM1.38m | 9:29PM1.59m | 11:21AM1.24m | |||||||||||||||||||
Low Tide | 3:05AM0.49m | 2:58PM0.75m | 3:46AM0.54m | 3:21PM0.92m | 4:36AM0.61m | 3:41PM1.08m | ||||||||||||||||||
 | |  | |  |  | |  | | | | | | | | | | | | | | | | | |
 | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:45 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
Temp °C | 25 | 25 | 24 | 28 | 29 | 28 | 27 | 26 | 25 | 25 | 25 | 28 | 29 | 29 | 28 | 26 | 26 | 25 | 25 | 28 | 28 | 28 | 27 | 26 |
Feels °C | 29 | 29 | 27 | 32 | 32 | 31 | 31 | 30 | 29 | 29 | 29 | 32 | 32 | 33 | 33 | 31 | 31 | 29 | 29 | 33 | 32 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SSW 8 | ESE 6 | ESE 8 | ESE 8 | SE 10 | ESE 8 | ESE 8 | ESE 8 | SE 10 | SE 10 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 7 | S 8 | S 9 | S 9 |
| kJ | 106 | 82 | 79 | 96 | 19 | 36 | 90 | 90 | 27 | 96 | 90 | 87 | 26 | 26 | 83 | 64 | 57 | 42 | 40 | 25 | 24 | 50 | 106 | 129 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SSW 8 | S 8 | SSW 8 | SE 11 | E 8 | SSW 8 | SSW 8 | SSW 7 | SE 10 | SE 10 | SE 10 | SSW 8 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | S 8 | E 7 | E 7 | ESE 7 |
| kJ | 19 | 19 | 29 | 19 | 29 | 34 | 19 | 19 | 11 | 28 | 27 | 26 | 11 | 12 | 25 | 26 | 26 | 25 | 25 | 38 | 22 | 24 | 23 | 15 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | SE 11 | S 10 | SSW 8 | SE 10 | SE 10 | SW 9 | SSW 7 | SSW 8 | SSW 8 | SW 9 | SW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 30 | 30 | 30 | 30 | 2 | 19 | 27 | 28 | 3 | 11 | 11 | 11 | 3 | 3 | 12 | 11 | 11 | 11 | 13 | 13 | 38 | 38 | 39 | 39 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 8 | — | — | — | ESE 8 | — | — | — | ESE 8 | ESE 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 94 | — | — | — | 96 | — | — | — | 87 | 89 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 330 | 58 | 58 | 0 | 0 | 0 | 0 | 0 | 647 | 585 | 330 | 0 | 0 | 0 | 0 | 0 | 58 | 58 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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