Surf Forecasts:
How big are the waves at Aha Rivermouth today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 8ft (2.5m), 14s period with E swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 10ft (3.0m), 14s period with ENE swell.
- Evening surf: Evening surf (20 Sep, local time) - 8ft (2.5m), 14s period with ENE swell.
The current surf forecast for Aha Rivermouth at 8AM is: 2.5m 14s primary swell from a East direction and 1.0m 7s secondary swell from a North direction (forecast issued at 02:00am September 20). An open ocean swell of 0.3m 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 (20 Sep) | 8ft (2.5m) | 14s |
| Afternoon (20 Sep) | 10ft (3.0m) | 14s |
| Evening (20 Sep) | 8ft (2.5m) | 14s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 26°C on Sun night). Winds decreasing (fresh winds from the NNW on Mon morning, light winds from the NW by Tue night). | ||||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||||
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 | 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 15 | E 14 | E 14 | E 14 | E 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | N 8 | NE 11 | NE 11 | N 8 | N 8 | N 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2424 | 2346 | 2437 | 2698 | 2816 | 2774 | 2815 | 2668 | 2338 | 1886 | 1376 | 1089 | 890 | 703 | 508 | 429 | 365 | 265 | 228 | 199 | 195 | 196 | 161 | 161 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | 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-on | cross-on |
High Tide | 10:25PM1.55m | 4:59PM1.41m | 11:56PM1.42m | 4:58PM1.53m | 3:08AM1.44m | 5:15PM1.64m | ||||||||||||||||||
Low Tide | 7:08AM0.82m | 8:05PM1.39m | 9:04AM0.78m | 10:25PM1.25m | 10:10AM0.68m | |||||||||||||||||||
 | | |  | | |  |  | | | | | | | | | | | | | | | | | |
 | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — |
 | — | — | — | — | — | — | 6:25 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 29 | 28 | 29 | 29 | 29 | 28 | 27 | 27 | 26 | 26 | 24 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 26 | 26 | 26 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | E 15 | E 14 | E 14 | E 14 | E 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
| kJ | 2424 | 2346 | 2437 | 2698 | 2816 | 2774 | 2815 | 2668 | 2338 | 1886 | 1376 | 1089 | 890 | 703 | 508 | 429 | 365 | 224 | 228 | 199 | 195 | 196 | 161 | 161 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | ENE 11 | ENE 11 | NE 11 | NE 11 | NE 11 | NE 11 | NE 11 |
| kJ | 22 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 265 | 223 | 185 | 185 | 126 | 121 | 92 |
Swell 3 Height (m) Direction Period (s) | S 8 | — | — | — | — | ESE 18 | — | — | — | — | — | — | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 | E 12 |
| kJ | 22 | — | — | — | — | 34 | — | — | — | — | — | — | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 4 | 4 | 4 | 4 | 11 |
Wind waves Height (m) Direction Period (s) | N 8 | N 7 | N 7 | N 6 | N 7 | N 7 | N 7 | N 8 | N 8 | NNW 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | — | N 8 | — | — | — | N 8 | — |
| kJ | 78 | 62 | 89 | 84 | 92 | 77 | 94 | 161 | 181 | 251 | 333 | 383 | 351 | 309 | 309 | 305 | 260 | — | 86 | — | — | — | 66 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 31 | 31 | 595 | 595 | 595 | 595 | 595 | 596 | 596 | 595 | 595 | 596 | 746 | 627 | 595 | 673 | 30 | 31 | 31 | 31 | 45 | 919 | 933 | 40 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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