Surf Forecasts:
How big are the waves at Aha Rivermouth today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 2.5ft (0.7m), 9s period with E swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 1.5ft (0.5m), 12s period with ENE swell.
- Evening surf: Evening surf (18 Sep, local time) - 1.5ft (0.5m), 12s period with ENE swell.
The current surf forecast for Aha Rivermouth at 4PM is: 0.5m 12s primary swell from a East-northeast direction and 0.6m 8s secondary swell from a East direction (forecast issued at 08:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 2.5ft (0.7m) | 9s |
| Afternoon (18 Sep) | 1.5ft (0.5m) | 12s |
| Evening (18 Sep) | 1.5ft (0.5m) | 12s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Fri night. Warm (max 28°C on Fri morning, min 27°C on Fri morning). Winds increasing (light winds from the NNE on Fri morning, fresh winds from the N by Sun night). | ||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||||||||
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 9 | E 9 | E 9 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | E 10 | E 10 | ENE 11 | E 10 | E 18 | E 17 | E 16 | E 14 | E 14 | E 13 | E 13 | ENE 13 | ENE 13 | E 13 | ENE 13 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 87 | 83 | 83 | 82 | 82 | 81 | 81 | 78 | 89 | 107 | 70 | 240 | 546 | 1963 | 2197 | 2127 | 1866 | 1834 | 1836 | 1992 | 2221 | 2022 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | cross-on | 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 |
High Tide | 10:57AM1.42m | 9:55PM1.68m | 12:42PM1.31m | 10:25PM1.55m | 4:59PM1.41m | |||||||||||||||||
Low Tide | 4:30AM0.64m | 3:44PM1.14m | 5:28AM0.75m | 3:51PM1.27m | 7:08AM0.82m | 8:05PM1.39m | ||||||||||||||||
 |  | | | |  | | | | | | | | | | | | |  | | | | |
 | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — |
 | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:25 | — |
mm | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — |
Temp °C | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 32 | 31 | 32 | 31 | 31 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 8 | E 9 | E 9 | E 8 | E 10 | E 10 | ENE 11 | E 10 | ENE 11 | E 13 | E 16 | E 14 | E 14 | E 13 | E 13 | ENE 13 | ENE 13 | E 13 | ENE 13 |
| kJ | 74 | 74 | 74 | 52 | 53 | 53 | 49 | 71 | 89 | 107 | 65 | 146 | 417 | 1963 | 2197 | 2127 | 1866 | 1834 | 1836 | 1992 | 2221 | 2022 |
Swell 2 Height (m) Direction Period (s) | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | E 10 | ENE 11 | E 9 | E 17 | NE 10 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 |
| kJ | 87 | 83 | 83 | 82 | 82 | 81 | 81 | 78 | 71 | 67 | 70 | 63 | 546 | 79 | 22 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Swell 3 Height (m) Direction Period (s) | N 7 | N 7 | N 7 | N 6 | N 6 | S 8 | N 8 | N 8 | S 8 | S 8 | ENE 9 | E 18 | NE 10 | N 9 | NNW 9 | N 8 | — | — | — | — | — | — |
| kJ | 23 | 23 | 21 | 20 | 12 | 22 | 23 | 19 | 22 | 22 | 31 | 240 | 112 | 26 | 15 | 12 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NE 3 | — | N 7 | N 7 | N 3 | N 4 | N 4 | N 4 | N 9 | N 8 | N 8 | N 8 | N 8 | N 7 | N 7 | N 7 |
| kJ | — | — | — | — | — | — | 2 | — | 15 | 21 | 7 | 9 | 19 | 17 | 93 | 60 | 54 | 48 | 41 | 37 | 51 | 108 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 44 | 68 | 70 | 70 | 70 | 70 | 70 | 40 | 595 | 595 | 595 | 595 | 595 | 70 | 31 | 31 | 595 | 94 | 746 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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