Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (16 Aug):
- Morning surf: Morning surf (16 Aug, local time) - 2.5ft (0.8m), 10s period with E swell.
- Afternoon surf: Afternoon surf (16 Aug, local time) - 5ft (1.5m), 6s period with ESE swell.
- Evening surf: Evening surf (16 Aug, local time) - 4.5ft (1.3m), 6s period with ESE swell.
The current surf forecast for Niyodo Rivermouth at 6AM is: 0.7m 10s primary swell from a East direction and 0.7m 8s secondary swell from a South direction, 0.6m 5s secondary swell from a East direction (forecast issued at 02:00am August 16). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Aug) | 2.5ft (0.8m) | 10s |
| Afternoon (16 Aug) | 5ft (1.5m) | 6s |
| Evening (16 Aug) | 4.5ft (1.3m) | 6s |
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 Sun morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||||||||||
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 8 | E 10 | E 10 | E 9 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | SE 6 | SE 5 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 90 | 69 | 90 | 122 | 225 | 160 | 153 | 125 | 127 | 146 | 119 | 77 | 62 | 172 | 168 | 124 | 124 | 113 | 88 | 126 | 80 | 73 | 73 | 72 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | glassy | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | on | cross-on | cross-on | cross | glassy | cross-off | glassy | on | cross-on | cross-on | glassy |
High Tide | 7:51AM1.81m | 8:19PM1.79m | 8:33AM1.68m | 8:43PM1.73m | 9:16AM1.53m | |||||||||||||||||||
Low Tide | 1:52AM0.51m | 2:04PM0.37m | 2:28AM0.48m | 2:33PM0.56m | 3:05AM0.49m | 2:58PM0.75m | ||||||||||||||||||
 |  |  | |  | |  |  | | | | | |  | | | |  | |  | | | | | |
 | — | 5:26 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:49 | — |
mm | — | — | — | — | 1 | 4 | 4 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 24 | 27 | 28 | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 28 | 28 | 27 | 26 | 25 | 25 | 24 | 27 | 28 | 28 | 27 | 26 |
Feels °C | 29 | 27 | 27 | 31 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 31 | 31 | 30 | 28 | 29 | 26 | 31 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | E 10 | E 10 | S 9 | S 9 | E 10 | S 8 | E 10 | S 8 | E 10 | E 9 | E 9 | S 8 | S 8 | S 8 | SSW 8 | SSW 8 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 71 | 69 | 90 | 122 | 73 | 76 | 71 | 51 | 68 | 49 | 64 | 60 | 41 | 32 | 31 | 30 | 19 | 19 | 88 | 84 | 80 | 73 | 73 | 72 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 9 | S 8 | S 8 | ESE 10 | E 10 | S 9 | E 10 | S 8 | SE 11 | S 8 | S 8 | S 8 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 90 | 62 | 68 | 68 | 35 | 71 | 54 | 71 | 50 | 31 | 33 | 33 | 32 | 30 | 30 | 30 | 30 | 30 | 19 | 19 | 19 | 19 | 19 | 19 |
Swell 3 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | — | SE 11 | SE 11 | SE 11 | — | SE 11 | — | — | — | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 |
| kJ | 5 | 5 | 50 | 22 | 35 | 34 | 33 | 31 | 31 | — | 31 | 30 | 30 | — | 30 | — | — | — | 30 | 30 | 29 | 29 | 28 | 16 |
Wind waves Height (m) Direction Period (s) | E 5 | E 5 | E 5 | E 5 | E 9 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | SE 6 | SE 5 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | — | ESE 9 | — | — | — | — |
| kJ | 12 | 18 | 18 | 17 | 225 | 160 | 153 | 125 | 127 | 146 | 119 | 77 | 62 | 172 | 168 | 124 | 124 | 113 | — | 126 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 587 | 539 | 29 | 29 | 29 | 29 | 29 | 29 | 539 | 539 | 55 | 29 | 29 | 0 | 0 | 0 | 330 | 58 | 55 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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