Surf Forecasts:
How big are the waves at Aha Rivermouth today (23 Aug):
- Morning surf: Morning surf (23 Aug, local time) - 1.5ft (0.4m), 9s period with ENE swell.
- Afternoon surf: Afternoon surf (23 Aug, local time) - 1.5ft (0.4m), 9s period with ENE swell.
- Evening surf: Evening surf (23 Aug, local time) - 1.5ft (0.4m), 12s period with ESE swell.
The current surf forecast for Aha Rivermouth at 2PM is: 0.4m 9s primary swell from a East-northeast direction and 0.6m 4s secondary swell from a East-southeast direction (forecast issued at 08:00am August 23). An open ocean swell of 0.8m 10s is not directed at the surf break, a second open ocean swell of 0.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Aug) | 1.5ft (0.4m) | 9s |
| Afternoon (23 Aug) | 1.5ft (0.4m) | 9s |
| Evening (23 Aug) | 1.5ft (0.4m) | 12s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 38mm), heaviest during Tue night. Warm (max 29°C on Tue morning, min 27°C on Sun night). Winds increasing (light winds from the ESE on Sun night, extremely windy from the NW by Tue night). | ||||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||||||||
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) | SE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ESE 12 | ESE 12 | ESE 13 | ESE 13 | ESE 16 | ESE 15 | ESE 16 | ESE 16 | E 17 | E 18 | E 18 | E 18 | E 17 | E 16 | E 16 | E 16 | ENE 15 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 16 | 27 | 26 | 27 | 32 | 52 | 60 | 96 | 98 | 196 | 487 | 1240 | 1940 | 3235 | 5825 | 8317 | 11679 | 14114 | 11791 | 13929 | 17215 | 16050 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:43PM1.53m | 3:31AM1.54m | 6:01PM1.65m | 4:36AM1.64m | 6:20PM1.74m | |||||||||||||||||
Low Tide | 9:56AM0.75m | 10:37PM1.33m | 10:52AM0.63m | 11:23PM1.21m | 11:30AM0.52m | |||||||||||||||||
 |  | | | | | |  | |  | | | |  | | | |  | | | |  | |
 | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — |
 | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:54 | — |
mm | — | — | — | — | — | — | — | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | 1 | 3 |
Temp °C | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 27 |
Feels °C | 29 | 30 | 29 | 30 | 29 | 30 | 30 | 29 | 29 | 28 | 30 | 29 | 30 | 30 | 28 | 28 | 29 | 27 | 27 | 25 | 22 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | ESE 13 | ESE 16 | ESE 15 | ESE 16 | ESE 16 | E 17 | E 18 | E 18 | E 18 | E 17 | E 16 | E 16 | E 16 | ENE 15 |
| kJ | 141 | 153 | 138 | 115 | 94 | 92 | 71 | 52 | 98 | 196 | 487 | 1240 | 1940 | 3235 | 5825 | 8317 | 11679 | 14114 | 11791 | 13929 | 17215 | 16050 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | S 7 | S 7 | S 7 | ESE 12 | ESE 12 | ESE 13 | SW 9 | ESE 12 | ESE 12 | SW 9 | SW 9 | E 7 | SW 9 | — | — | — | — | — | — | — |
| kJ | 16 | 27 | 27 | 27 | 27 | 52 | 60 | 96 | 50 | 81 | 94 | 43 | 41 | 107 | 28 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | ENE 9 | ENE 9 | ENE 10 | S 7 | ENE 10 | ENE 10 | E 11 | SW 9 | SW 9 | ENE 10 | SW 9 | SW 9 | SW 9 | — | — | — | — | — | — | — |
| kJ | 15 | 15 | 26 | 27 | 32 | 17 | 31 | 31 | 63 | 36 | 41 | 43 | 41 | 41 | 79 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 7 | ESE 4 | ESE 4 | E 4 | ESE 4 | E 4 | E 4 | E 5 | E 5 | E 6 | E 6 | E 6 | ENE 7 | ENE 8 | ENE 10 | — | — | NNE 6 | NNE 7 | N 8 | N 9 |
| kJ | 57 | 57 | 8 | 14 | 13 | 19 | 14 | 15 | 22 | 46 | 61 | 89 | 115 | 186 | 295 | 83 | — | — | 214 | 588 | 1273 | 3588 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 595 | 70 | 70 | 70 | 70 | 70 | 70 | 68 | 68 | 66 | 70 | 70 | 66 | 40 | 40 | 40 | 90 | 90 | 749 | 749 | 693 | 664 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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