Surf Forecasts:
How big are the waves at Aha Rivermouth today (31 Aug):
- Morning surf: Morning surf (31 Aug, local time) - 4.5ft (1.3m), 7s period with ESE swell.
- Afternoon surf: Afternoon surf (31 Aug, local time) - 6ft (1.8m), 9s period with ESE swell.
- Evening surf: Evening surf (31 Aug, local time) - 7ft (2.1m), 8s period with ESE swell.
The current surf forecast for Aha Rivermouth at 3PM is: 1.8m 9s primary swell from a East-southeast direction (forecast issued at 08:00am August 31). An open ocean swell of 0.6m 8s is not directed at the surf break, a second open ocean swell of 0.3m 9s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Aug) | 4.5ft (1.3m) | 7s |
| Afternoon (31 Aug) | 6ft (1.8m) | 9s |
| Evening (31 Aug) | 7ft (2.1m) | 8s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 19mm), heaviest on Tue morning. Warm (max 28°C on Mon morning, min 27°C on Mon morning). Winds decreasing (strong winds from the E on Mon night, light winds from the E by Wed night). | ||||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||||||||
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 7 | ESE 7 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 105 | 167 | 277 | 466 | 475 | 533 | 599 | 721 | 878 | 951 | 1050 | 1215 | 1224 | 1183 | 1183 | 1171 | 1075 | 985 | 993 | 977 | 979 | 1131 |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on |
High Tide | 8:20AM2.05m | 8:34PM2.03m | 9:00AM1.97m | 9:03PM2.00m | 9:45AM1.84m | |||||||||||||||||
Low Tide | 2:28PM0.49m | 2:48AM0.43m | 2:59PM0.63m | 3:28AM0.42m | 3:32PM0.79m | |||||||||||||||||
 |  |  | | |  |  | | |  | | | |  | | | | | | | | | |
 | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — |
 | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | — | 1 |
Temp °C | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 |
Feels °C | 27 | 26 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 28 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 8 | SSW 9 | S 9 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SW 10 | SSW 8 | S 8 | S 8 | SW 9 | SW 10 | SW 10 | SW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | E 10 |
| kJ | 50 | 45 | 54 | 52 | 36 | 24 | 14 | 13 | 21 | 14 | 13 | 12 | 11 | 14 | 37 | 35 | 49 | 86 | 127 | 127 | 157 | 1131 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 11 | SW 9 | ENE 11 | SW 9 | SW 9 | SW 9 | SW 10 | S 8 | SW 10 | SW 9 | SW 9 | S 8 | S 8 | S 8 | S 9 | E 12 | — | — | SW 11 | SSW 10 |
| kJ | 40 | 40 | 40 | 13 | 40 | 14 | 13 | 13 | 14 | 5 | 15 | 14 | 14 | 11 | 10 | 10 | 14 | 11 | — | — | 75 | 175 |
Swell 3 Height (m) Direction Period (s) | SW 10 | S 8 | SW 9 | — | SW 9 | — | S 8 | S 8 | E 15 | SSW 8 | E 15 | E 15 | SW 9 | ENE 14 | E 13 | E 13 | — | — | — | — | — | — |
| kJ | 14 | 12 | 13 | — | 13 | — | 5 | 5 | 4 | 7 | 18 | 18 | 14 | 38 | 14 | 14 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | — |
| kJ | 105 | 167 | 277 | 466 | 475 | 533 | 599 | 721 | 878 | 951 | 1050 | 1215 | 1224 | 1183 | 1183 | 1171 | 1075 | 985 | 993 | 977 | 979 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 68 | 70 | 66 | 69 | 895 | 68 | 595 | 595 | 595 | 801 | 685 | 687 | 673 | 595 | 595 | 664 | 673 | 673 | 664 | 683 | 70 | 68 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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