Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (15 Aug):
- Morning surf: Morning surf (15 Aug, local time) - 2.5ft (0.8m), 10s period with S swell.
- Afternoon surf: Afternoon surf (15 Aug, local time) - 2.5ft (0.7m), 10s period with E swell.
- Evening surf: Evening surf (15 Aug, local time) - 2.5ft (0.7m), 9s period with S swell.
The current surf forecast for Niyodo Rivermouth at 6AM is: 0.8m 10s primary swell from a South direction and 0.7m 10s secondary swell from a East direction (forecast issued at 02:00am August 15). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Aug) | 2.5ft (0.8m) | 10s |
| Afternoon (15 Aug) | 2.5ft (0.7m) | 10s |
| Evening (15 Aug) | 2.5ft (0.7m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun afternoon. Warm (max 28°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||||||||||
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) | E 10 | S 10 | S 10 | S 10 | S 9 | E 10 | E 10 | S 9 | E 10 | E 9 | E 10 | E 10 | E 9 | ESE 10 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 9 | ESE 9 | E 9 | ESE 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 96 | 125 | 122 | 117 | 106 | 96 | 96 | 76 | 120 | 85 | 88 | 122 | 153 | 394 | 212 | 158 | 144 | 123 | 96 | 68 | 203 | 188 | 46 | 140 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | off | glassy | on | on | cross-on | cross | cross-off | cross-off | glassy | glassy | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | on | on | glassy |
High Tide | 7:10AM1.89m | 7:54PM1.84m | 7:51AM1.81m | 8:19PM1.79m | 8:33AM1.68m | 8:43PM1.73m | ||||||||||||||||||
Low Tide | 1:16AM0.57m | 1:33PM0.19m | 1:52AM0.51m | 2:04PM0.37m | 2:28AM0.48m | 2:33PM0.56m | ||||||||||||||||||
 | |  | | |  | |  |  |  | | | | |  | | | | | | |  | | | |
 | — | 5:26 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:50 | — |
mm | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | 1 | 3 | 4 | 2 | 1 | 2 | 1 | 1 | 1 | — | — | 1 |
Temp °C | 24 | 24 | 24 | 27 | 28 | 28 | 27 | 26 | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 27 | 28 | 28 | 27 | 26 |
Feels °C | 28 | 27 | 27 | 30 | 30 | 31 | 30 | 30 | 29 | 29 | 29 | 31 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 31 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | E 10 | S 8 | S 8 | E 10 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | E 9 | S 8 | S 8 | E 9 | ESE 9 |
| kJ | 71 | 125 | 122 | 117 | 106 | 79 | 78 | 76 | 120 | 69 | 68 | 122 | 73 | 76 | 54 | 51 | 50 | 49 | 33 | 60 | 32 | 32 | 40 | 140 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | S 9 | E 9 | E 10 | S 8 | ESE 10 | SE 12 | E 10 | E 10 | E 10 | E 10 | E 10 | S 8 | SE 11 | SE 11 | S 8 | S 8 |
| kJ | 96 | 96 | 98 | 98 | 96 | 96 | 96 | 69 | 73 | 85 | 88 | 68 | 35 | 34 | 51 | 70 | 68 | 45 | 44 | 33 | 30 | 30 | 31 | 30 |
Swell 3 Height (m) Direction Period (s) | S 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 8 | SE 10 | SE 8 | SSE 7 | SE 10 | SE 12 | SE 12 | SE 12 | — | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | — | SE 11 | SE 11 | SE 11 |
| kJ | 38 | 30 | 18 | 18 | 17 | 10 | 16 | 10 | 5 | 17 | 50 | 22 | 35 | — | 33 | 31 | 31 | 31 | 31 | 30 | — | 30 | 30 | 30 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | ESE 2 | ESE 4 | ESE 4 | E 5 | E 5 | E 5 | E 5 | E 9 | ESE 10 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 9 | ESE 9 | ESE 5 | — |
| kJ | — | — | — | — | — | 1 | 6 | 6 | 11 | 12 | 11 | 11 | 153 | 394 | 212 | 158 | 144 | 123 | 96 | 68 | 203 | 188 | 46 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 82 | 29 | 29 | 29 | 0 | 0 | 0 | 0 | 539 | 539 | 29 | 9 | 29 | 29 | 9 | 29 | 539 | 539 | 539 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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