Surf Forecasts:
How big are the waves at Aha Rivermouth today (31 Aug):
- Morning surf: Morning surf (31 Aug, local time) - 4.5ft (1.4m), 7s period with ESE swell.
- Afternoon surf: Afternoon surf (31 Aug, local time) - 6ft (1.9m), 8s period with ESE swell.
- Evening surf: Evening surf (31 Aug, local time) - 7.5ft (2.3m), 8s period with ESE swell.
The current surf forecast for Aha Rivermouth at 2AM is: 1.1m 7s primary swell from a East-southeast direction and 0.4m 11s secondary swell from a East-northeast direction (forecast issued at 08:00pm August 30). An open ocean swell of 0.6m 8s 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 (1.4m) | 7s |
| Afternoon (31 Aug) | 6ft (1.9m) | 8s |
| Evening (31 Aug) | 7.5ft (2.3m) | 8s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 36mm), heaviest during Wed afternoon. Warm (max 28°C on Mon morning, min 26°C on Wed afternoon). Mainly strong winds. | ||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | ||||||||||||||||
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 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 |
Wave Graph  | ||||||||||||||||||
 kJ | 115 | 118 | 118 | 105 | 124 | 183 | 324 | 483 | 603 | 704 | 800 | 1047 | 1027 | 1064 | 1362 | 1424 | 1520 | 1285 |
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-on |
High Tide | 8:08PM2.03m | 8:20AM2.05m | 8:34PM2.03m | 9:00AM1.97m | ||||||||||||||
Low Tide | 2:12AM0.48m | 2:28PM0.49m | 2:48AM0.43m | 2:59PM0.63m | ||||||||||||||
 |  |  | | | |  | | |  | | | |  | | | | | |
 | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — |
 | 6:50 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:46 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
Temp °C | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 29 | 28 | 27 | 28 | 26 | 28 | 28 | 28 | 28 | 28 | 26 | 28 | 27 | 27 | 27 | 27 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 | SSW 9 | S 9 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | S 8 | SSW 8 | S 8 | SW 9 | SW 9 |
| kJ | 94 | 73 | 53 | 50 | 50 | 45 | 54 | 37 | 36 | 24 | 14 | 14 | 8 | 5 | 13 | 12 | 30 | 41 |
Swell 2 Height (m) Direction Period (s) | ENE 12 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | S 8 | SW 10 | SW 10 | SW 10 | S 8 | S 8 |
| kJ | 44 | 43 | 43 | 42 | 40 | 40 | 13 | 13 | 13 | 14 | 13 | 14 | 5 | 14 | 15 | 15 | 11 | 20 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SW 8 | SW 9 | SW 9 | SW 10 | S 8 | — | — | — | — | S 8 | S 8 | WSW 10 | SSW 8 | E 16 | E 15 | E 15 | — |
| kJ | 4 | 11 | 13 | 13 | 14 | 12 | — | — | — | — | 5 | 5 | 9 | 6 | 5 | 19 | 18 | — |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 |
| kJ | 115 | 118 | 118 | 105 | 124 | 183 | 324 | 483 | 603 | 704 | 800 | 1047 | 1027 | 1064 | 1362 | 1424 | 1520 | 1285 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 70 | 70 | 70 | 70 | 68 | 627 | 935 | 801 | 801 | 595 | 681 | 681 | 746 | 673 | 683 | 673 | 70 | 70 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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