Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (25 Aug):
- Morning surf: Morning surf (25 Aug, local time) - 10ft (3.0m), 14s period with SSE swell.
- Afternoon surf: Afternoon surf (25 Aug, local time) - 11ft (3.5m), 14s period with SSE swell.
- Evening surf: Evening surf (25 Aug, local time) - 10ft (3.0m), 13s period with SSE swell.
The current surf forecast for Niyodo Rivermouth at 6AM is: 3.0m 15s primary swell from a South-southeast direction and 1.6m 18s secondary swell from a South-southeast direction (forecast issued at 02:00am August 25). The wind direction is predicted to be glassy and the swell rating is 11.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Aug) | 10ft (3.0m) | 14s |
| Afternoon (25 Aug) | 11ft (3.5m) | 14s |
| Evening (25 Aug) | 10ft (3.0m) | 13s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Wed morning. Warm (max 30°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||||||||||
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) | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | S 12 | S 13 | S 12 | S 12 | S 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSE 10 | S 9 | S 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 4588 | 4734 | 3835 | 3052 | 3200 | 4247 | 3521 | 3045 | 2422 | 2113 | 1793 | 1415 | 1610 | 1117 | 821 | 698 | 530 | 564 | 418 | 365 | 275 | 231 | 407 | 364 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | on | on | glassy | cross-off | cross-off | glassy | off | on | on | on | glassy | glassy | glassy | glassy | glassy | glassy | on | on | cross-on | glassy |
High Tide | 3:40AM1.52m | 5:30PM1.61m | 4:25AM1.63m | 5:51PM1.69m | 5:03AM1.74m | 6:12PM1.76m | ||||||||||||||||||
Low Tide | 10:30PM1.08m | 10:37AM0.35m | 10:58PM0.96m | 11:10AM0.25m | 11:25PM0.84m | 11:40AM0.20m | ||||||||||||||||||
 | |  | | | | | | |  | | |  | |  |  | | | | |  | | |  | |
 | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 27 | 26 | 25 | 28 | 30 | 30 | 28 | 26 | 26 | 26 | 26 | 29 | 30 | 30 | 28 | 27 | 27 | 26 | 27 | 28 | 29 | 30 | 28 | 27 |
Feels °C | 33 | 32 | 30 | 33 | 33 | 33 | 33 | 30 | 30 | 30 | 30 | 33 | 34 | 34 | 33 | 32 | 33 | 31 | 33 | 33 | 33 | 34 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | S 12 | S 13 | S 12 | S 12 | S 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSE 10 | SSE 9 | SSE 9 |
| kJ | 4588 | 4734 | 3835 | 3052 | 3200 | 4247 | 3521 | 3045 | 2422 | 2113 | 1793 | 1415 | 1610 | 1117 | 821 | 698 | 530 | 564 | 418 | 365 | 275 | 231 | 248 | 242 |
Swell 2 Height (m) Direction Period (s) | E 16 | E 16 | SSE 18 | SSE 17 | S 16 | E 14 | E 14 | E 14 | E 14 | E 13 | SE 10 | SE 10 | E 13 | SE 9 | SE 9 | SE 9 | SSE 9 | SSE 8 | SSE 8 | SE 8 | SSE 9 | SSW 9 | SSW 9 | SSW 9 |
| kJ | 20 | 19 | 1642 | 2086 | 1778 | 66 | 103 | 100 | 91 | 88 | 246 | 262 | 84 | 241 | 206 | 206 | 233 | 188 | 179 | 154 | 194 | 203 | 151 | 147 |
Swell 3 Height (m) Direction Period (s) | E 16 | E 9 | E 12 | E 15 | E 15 | E 15 | E 11 | — | — | E 13 | E 13 | E 13 | — | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 11 |
| kJ | 20 | 14 | 98 | 109 | 67 | 67 | 37 | — | — | 87 | 85 | 84 | — | 83 | 82 | 79 | 74 | 71 | 44 | 44 | 43 | 42 | 42 | 39 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 9 | S 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 407 | 364 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 9 | 9 | 9 | 51 | 51 | 9 | 9 | 9 | 0 | 0 | 51 | 51 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 51 | 51 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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