Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 11ft (3.5m), 13s period with ESE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 10ft (3.0m), 12s period with ESE swell.
- Evening surf: Evening surf (21 Sep, local time) - 5.5ft (1.7m), 11s period with ESE swell.
The current surf forecast for Niyodo Rivermouth at 6AM is: 3.5m 13s primary swell from a East-southeast direction (forecast issued at 02:00am September 21). An open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 11.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 11ft (3.5m) | 13s |
| Afternoon (21 Sep) | 10ft (3.0m) | 12s |
| Evening (21 Sep) | 5.5ft (1.7m) | 11s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||||||||||
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 13 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | ESE 9 | SE 8 | E 10 | ESE 8 | ESE 8 | S 8 | S 8 | S 8 | SSE 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 4570 | 4642 | 4389 | 4299 | 3597 | 2341 | 1227 | 724 | 452 | 245 | 154 | 113 | 85 | 60 | 40 | 25 | 10 | 8 | 6 | 6 | 5 | 5 | 5 | 8 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | glassy | on | on | glassy | cross-off |
High Tide | 00:05AM1.30m | 4:10PM1.43m | 2:22AM1.37m | 4:26PM1.53m | 3:23AM1.49m | 4:45PM1.62m | ||||||||||||||||||
Low Tide | 8:31AM0.64m | 9:35PM1.14m | 9:26AM0.53m | 10:02PM1.00m | 10:04AM0.43m | |||||||||||||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | | | | |
 | — | 5:50 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:04 | — | — | — | — | — | — | — | 6:02 | — | — | — | — | — | — | — | 6:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 24 | 25 | 26 | 26 | 24 | 23 | 21 | 20 | 20 | 25 | 28 | 29 | 25 | 22 | 20 | 20 | 19 | 23 | 26 | 25 | 24 | 22 |
Feels °C | 24 | 23 | 23 | 25 | 26 | 25 | 24 | 23 | 20 | 19 | 19 | 24 | 28 | 29 | 26 | 23 | 20 | 20 | 18 | 23 | 27 | 26 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | ESE 9 | SE 8 | ENE 6 | ENE 6 | ENE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 |
| kJ | 4570 | 4642 | 4389 | 4299 | 3597 | 2341 | 1227 | 724 | 452 | 245 | 154 | 113 | 85 | 60 | 40 | 25 | 10 | 14 | 8 | 9 | 5 | 5 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | NNW 3 | SE 10 | SE 10 | ENE 5 | E 9 | ESE 9 | ESE 8 | ESE 8 | E 4 | E 4 | S 8 | SSE 9 |
| kJ | — | — | — | — | — | 2 | 2 | 1 | 1 | 1 | 6 | 5 | 1 | 15 | 15 | 2 | 6 | 8 | 6 | 6 | 2 | 1 | 5 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 8 | NE 6 | S 8 | S 8 | S 8 | S 8 | E 5 | SSE 9 | ENE 6 | E 10 | S 8 | S 8 | S 8 | S 8 | SE 9 | S 8 |
| kJ | — | — | — | — | — | — | — | — | 1 | 2 | 6 | 5 | 5 | 5 | 2 | 8 | 4 | 7 | 5 | 5 | 5 | 5 | 3 | 5 |
Wind waves Height (m) Direction Period (s) | N 4 | NW 4 | NW 4 | NNW 4 | NW 4 | NNW 3 | N 3 | N 3 | NNW 3 | NNW 3 | N 3 | NNW 3 | — | — | — | — | ENE 4 | — | NNW 2 | — | — | — | — | — |
| kJ | 19 | 28 | 23 | 32 | 13 | 6 | 5 | 5 | 6 | 6 | 6 | 3 | — | — | — | — | 2 | — | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 9 | 224 | 224 | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 229 | 55 | 55 | 233 | 279 | 906 | 906 | 653 | 638 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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