Surf Forecasts:
How big are the waves at Aha Rivermouth today (19 Aug):
- Afternoon surf: Afternoon surf (19 Aug, local time) - 6ft (1.9m), 7s period with E swell.
- Evening surf: Evening surf (19 Aug, local time) - 6.5ft (2.0m), 7s period with E swell.
The current surf forecast for Aha Rivermouth at 11PM is: 2.1m 7s primary swell from a East-southeast direction (forecast issued at 02:00pm August 19). An open ocean swell of 0.3m 8s is not directed at the surf break, a second open ocean swell of 0.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Aug) | - | - |
| Afternoon (19 Aug) | 6ft (1.9m) | 7s |
| Evening (19 Aug) | 6.5ft (2.0m) | 7s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 27mm), heaviest during Wed night. Warm (max 28°C on Wed afternoon, min 27°C on Wed night). Winds increasing (moderate winds from the SE on Wed night, near gales from the ESE by Fri night). | ||||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | ||||||||||||||||||
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) | E 7 | E 7 | E 7 | E 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | E 6 | E 6 | ESE 8 | SE 8 | ESE 8 | ESE 7 | ESE 8 | SE 8 | SE 10 | SE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 263 | 331 | 355 | 435 | 438 | 445 | 454 | 314 | 257 | 175 | 194 | 284 | 998 | 1109 | 649 | 518 | 468 | 1505 | 3171 | 3171 |
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 | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 10:38AM1.58m | 10:27PM1.82m | 11:35AM1.41m | 10:59PM1.71m | 1:42PM1.30m | |||||||||||||||
Low Tide | 4:13PM0.94m | 5:24AM0.74m | 4:36PM1.10m | 6:35AM0.81m | 4:55PM1.26m | |||||||||||||||
 | | |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — |
 | — | — | 7:00 | — | — | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:59 | — |
mm | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 28 | 28 | 29 | 29 | 29 | 30 | 28 | 29 | 29 | 29 | 27 | 27 | 24 | 24 | 26 | 24 | 24 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 9 | S 8 | S 8 | S 10 | S 10 | S 9 | S 9 | S 9 | SW 9 | SW 9 | S 9 | SSW 9 | SSW 8 | SW 9 | SW 8 | SW 9 |
| kJ | 5 | 11 | 11 | 10 | 13 | 22 | 10 | 94 | 118 | 235 | 185 | 162 | 3 | 3 | 125 | 126 | 96 | 84 | 86 | 39 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 10 | ENE 8 | ENE 9 | SW 9 | ESE 10 | SW 9 | — | — | SW 9 | SW 8 | ESE 10 | — | — | — |
| kJ | 7 | 3 | 3 | 3 | 3 | 3 | 18 | 14 | 15 | 3 | 10 | 3 | — | — | 3 | 57 | 90 | — | — | — |
Swell 3 Height (m) Direction Period (s) | ESE 10 | — | — | — | — | S 8 | SW 8 | SW 8 | SW 9 | — | SW 9 | — | — | — | — | — | SW 8 | — | — | — |
| kJ | 10 | — | — | — | — | 1 | 3 | 3 | 3 | — | 3 | — | — | — | — | — | 42 | — | — | — |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | E 6 | E 6 | ESE 8 | SE 8 | ESE 8 | ESE 7 | ESE 8 | SE 8 | SE 10 | SE 10 |
| kJ | 263 | 331 | 355 | 435 | 438 | 445 | 454 | 314 | 257 | 175 | 194 | 284 | 998 | 1109 | 649 | 518 | 468 | 1505 | 3171 | 3171 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 861 | 861 | 595 | 595 | 70 | 70 | 70 | 70 | 664 | 70 | 70 | 595 | 595 | 595 | 595 | 70 | 595 | 595 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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