Surf Forecasts:
How big are the waves at Aha Rivermouth today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 5.5ft (1.7m), 13s period with ESE swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 6ft (1.9m), 13s period with ESE swell.
- Evening surf: Evening surf (20 Oct, local time) - 7ft (2.2m), 15s period with ESE swell.
The current surf forecast for Aha Rivermouth at 1PM is: 1.9m 14s primary swell from a East-southeast direction and 0.6m 18s secondary swell from a Southeast direction (forecast issued at 08:00am October 20). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 5.5ft (1.7m) | 13s |
| Afternoon (20 Oct) | 6ft (1.9m) | 13s |
| Evening (20 Oct) | 7ft (2.2m) | 15s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 48mm), heaviest during Wed night. Warm (max 27°C on Tue morning, min 24°C on Wed night). Winds increasing (light winds from the E on Tue morning, near gales from the NE by Wed night). | ||||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||||||||||
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 14 | ESE 13 | ESE 14 | ESE 13 | ESE 13 | ESE 15 | SE 14 | SE 15 | SE 16 | SE 16 | SE 17 | SE 17 | SE 16 | SE 16 | SE 17 | SE 17 | SE 16 | NE 8 | NNE 8 | SE 16 | N 9 | N 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 779 | 1058 | 1570 | 1157 | 1045 | 2258 | 2185 | 2560 | 3714 | 4314 | 7153 | 8443 | 7710 | 7073 | 10554 | 12523 | 11460 | 1089 | 921 | 11426 | 421 | 386 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 3:33PM1.48m | 2:23AM1.35m | 4:07PM1.58m | 3:46AM1.48m | 4:35PM1.68m | |||||||||||||||||
Low Tide | 7:48AM0.74m | 9:25PM1.13m | 9:08AM0.70m | 10:08PM0.94m | 10:03AM0.63m | |||||||||||||||||
 |  | | | | |  | | |  | |  |  | | | |  |  |  | | |  | |
 | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — |
 | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 4 | 14 | 3 | 4 | 7 | 3 | 2 | — |
Temp °C | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 26 |
Feels °C | 30 | 30 | 30 | 29 | 29 | 27 | 28 | 28 | 28 | 27 | 28 | 25 | 24 | 23 | 22 | 20 | 19 | 20 | 20 | 21 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | ESE 14 | ESE 13 | ESE 14 | ESE 13 | ESE 13 | ESE 15 | SE 14 | SE 15 | SE 16 | SE 16 | SE 17 | SE 17 | SE 16 | SE 16 | SE 17 | SE 17 | SE 16 | SSE 16 | SSE 16 | SE 16 | SSE 16 | SSE 16 |
| kJ | 779 | 1058 | 1570 | 1157 | 1045 | 2258 | 2185 | 2560 | 3714 | 4314 | 7153 | 8443 | 7710 | 7073 | 10554 | 12523 | 11460 | 10924 | 11060 | 11426 | 10000 | 10109 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | SE 18 | SE 17 | SE 16 | ENE 10 | NNW 8 | NNW 7 | E 9 | SE 20 | — | — | — | SSE 20 | — | — | — | — | — | N 8 | N 9 | N 9 |
| kJ | 173 | 121 | 162 | 560 | 767 | 163 | 6 | 5 | 142 | 1716 | — | — | — | 2151 | — | — | — | — | — | 450 | 421 | 386 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 18 | ENE 9 | ENE 10 | — | — | — | NNW 7 | ENE 9 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 325 | 227 | 132 | — | — | — | 9 | 113 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ENE 9 | ENE 10 | ENE 10 | — | ENE 9 | ENE 10 | NE 5 | NE 6 | NE 6 | NE 7 | NE 7 | NE 8 | NNE 8 | — | — | — |
| kJ | — | — | — | — | — | — | 141 | 160 | 240 | — | 201 | 210 | 95 | 235 | 339 | 589 | 878 | 1089 | 921 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 12 | 12 | 68 | 12 | 40 | 66 | 40 | 68 | 40 | 40 | 627 | 627 | 596 | 595 | 596 | 596 | 595 | 595 | 595 | 693 | 693 | 693 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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