Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (30 Aug):
- Morning surf: Morning surf (30 Aug, local time) - 3ft (0.9m), 7s period with SSW swell.
- Afternoon surf: Afternoon surf (30 Aug, local time) - 3ft (0.9m), 7s period with SSW swell.
- Evening surf: Evening surf (30 Aug, local time) - 2.5ft (0.8m), 7s period with SSW swell.
The current surf forecast for Niyodo Rivermouth at 6AM is: 1.1m 7s primary swell from a South-southwest direction and 0.9m 7s secondary swell from a South-southwest direction, 0.4m 11s secondary swell from a Southeast direction (forecast issued at 02:00am August 30). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Aug) | 3ft (0.9m) | 7s |
| Afternoon (30 Aug) | 3ft (0.9m) | 7s |
| Evening (30 Aug) | 2.5ft (0.8m) | 7s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Sun afternoon. Warm (max 30°C on Sun morning, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||||||||||
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 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | S 8 | S 9 | S 8 | S 9 | S 9 | S 9 | S 9 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 140 | 117 | 134 | 89 | 89 | 86 | 86 | 69 | 74 | 87 | 94 | 68 | 94 | 92 | 73 | 74 | 74 | 73 | 96 | 92 | 126 | 121 | 148 | 144 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | on | on | on | glassy | cross-off | cross-off | cross-off | glassy | on | on | on | glassy | glassy | glassy | cross-off | glassy | on | on | cross-on | glassy |
High Tide | 6:50AM1.86m | 7:19PM1.85m | 7:27AM1.82m | 7:43PM1.84m | 8:08AM1.74m | 8:08PM1.81m | ||||||||||||||||||
Low Tide | 00:51AM0.50m | 1:05PM0.28m | 1:22AM0.42m | 1:34PM0.40m | 1:56AM0.37m | 2:03PM0.55m | ||||||||||||||||||
 | |  | | | |  |  |  | | | | | | | | | | | | | | | | |
 | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:30 | — |
mm | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 27 | 26 | 26 | 28 | 30 | 30 | 28 | 27 | 26 | 26 | 26 | 29 | 30 | 29 | 28 | 27 | 26 | 26 | 25 | 28 | 29 | 29 | 28 | 26 |
Feels °C | 33 | 31 | 31 | 33 | 34 | 35 | 34 | 33 | 31 | 31 | 31 | 34 | 34 | 33 | 33 | 33 | 31 | 31 | 29 | 32 | 31 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | E 10 | SSW 7 | SSW 7 | SSW 7 | SE 10 | SE 10 | SSW 7 | SSW 7 | S 7 | SSW 8 | SSW 8 | S 8 | S 9 | S 8 | S 9 | S 9 | S 9 | S 9 | S 8 | S 9 | SSE 7 | SSE 8 | SSE 7 | SSE 7 |
| kJ | 35 | 117 | 89 | 89 | 27 | 27 | 86 | 69 | 66 | 87 | 94 | 68 | 94 | 92 | 73 | 74 | 74 | 73 | 69 | 39 | 49 | 94 | 117 | 117 |
Swell 2 Height (m) Direction Period (s) | SE 11 | E 10 | SE 11 | SE 10 | E 11 | E 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | E 14 | ESE 14 | E 14 | SSE 8 | E 13 | E 13 | E 12 | E 12 |
| kJ | 19 | 33 | 30 | 28 | 21 | 21 | 36 | 37 | 16 | 26 | 17 | 16 | 25 | 24 | 24 | 24 | 37 | 66 | 96 | 36 | 126 | 121 | 148 | 144 |
Swell 3 Height (m) Direction Period (s) | SSE 9 | SE 11 | E 11 | E 11 | ESE 10 | SW 10 | E 11 | E 11 | E 11 | E 11 | E 11 | SSW 10 | E 11 | E 11 | E 14 | E 14 | SE 10 | SE 10 | SE 10 | E 13 | S 9 | SE 9 | SSW 9 | SE 9 |
| kJ | 8 | 19 | 22 | 22 | 9 | 4 | 21 | 21 | 21 | 21 | 9 | 10 | 9 | 9 | 16 | 37 | 15 | 15 | 15 | 92 | 24 | 14 | 15 | 14 |
Wind waves Height (m) Direction Period (s) | SSW 7 | — | SSW 7 | — | SSW 7 | SSW 7 | — | — | SSW 7 | SW 4 | SW 4 | — | — | — | — | — | — | — | — | E 5 | — | E 5 | — | — |
| kJ | 140 | — | 134 | — | 89 | 86 | — | — | 74 | 9 | 5 | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 51 | 51 | 51 | 0 | 0 | 0 | 0 | 0 | 51 | 51 | 51 | 0 | 0 | 0 | 0 | 0 | 573 | 539 | 58 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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