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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Sunday 10 May 2026 JSTForecast update in hr min s Forecast update imminent
Aha Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Aha Rivermouth sea temperature is
23.7° C
(Which is 1.3°C colder than average for this time of year)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 1AM is: 1.7m 8s primary swell from a East direction and 0.3m 12s secondary swell from a Southeast direction, 0.2m 6s secondary swell from a North direction (forecast issued at 08:00pm May 10). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 5ft (1.5m) | 9s |
| Afternoon (11 May) | 5ft (1.5m) | 9s |
| Evening (11 May) | 5.5ft (1.7m) | 9s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 98mm), heaviest during Mon morning. Warm (max 23°C on Tue night, min 20°C on Mon afternoon). Mainly fresh winds. | ||||||||||||||||||||||||
Sun 10 | Monday 11 | Tuesday 12 | Wednesday 13 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
E 9 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | E 10 | ESE 10 | E 10 | |
440 | 422 | 393 | 375 | 339 | 347 | 380 | 375 | 471 | 452 | 455 | 389 | 398 | 363 | 349 | 328 | 294 | 260 | 271 | 248 | 240 | 231 | 116 | 220 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | off | off | off | cross-off | cross-off | cross | cross-on | |
High Tide | 2:29AM1.45m | 2:08PM1.34m | 3:18AM1.55m | 3:32PM1.46m | 3:57AM1.65m | |||||||||||||||||||
Low Tide | 7:16PM0.62m | 8:35AM0.92m | 8:35PM0.63m | 9:33AM0.72m | 9:36PM0.61m | 10:18AM0.51m | ||||||||||||||||||
 |  |  | |  |  | | | | | | | | | | |  |  | | |  | | | | |
 | — | — | — | 5:41 | — | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — | — | 5:41 | — | — | — | — |
 | 7:02 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | 7:05 |
1 | 1 | — | 1 | 6 | 30 | 27 | 11 | 2 | — | — | — | 2 | 2 | 3 | 7 | 4 | 2 | — | — | — | — | — | — | |
Temp °C | 21 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 21 | 21 | 21 | 22 | 21 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
18 | 18 | 21 | 21 | 21 | 20 | 19 | 18 | 19 | 20 | 19 | 22 | 21 | 22 | 22 | 23 | 23 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | |
Swell 1 Height (m) Direction Period (s) | NNW 6 | NNW 6 | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 10 | SE 10 | N 5 | S 12 | — | S 11 | S 11 | SE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | E 10 | ESE 10 | E 10 |
 kJ | 7 | 7 | 25 | 23 | 36 | 35 | 19 | 19 | 16 | 4 | 1 | 3 | — | 2 | 2 | 3 | 294 | 260 | 271 | 248 | 240 | 231 | 116 | 220 |
Swell 2 Height (m) Direction Period (s) | SE 13 | SE 13 | N 6 | N 6 | N 5 | N 5 | N 5 | N 6 | N 6 | N 5 | — | S 12 | — | — | — | — | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | E 9 | SSE 8 |
| kJ | 7 | 27 | 6 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | — | 3 | — | — | — | — | 3 | 3 | 3 | 7 | 6 | 6 | 83 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 8 | SSE 8 | SSE 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 13 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | E 9 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | — | — | — | — | SW 3 | — | W 4 | WNW 4 |
| kJ | 440 | 422 | 393 | 375 | 339 | 347 | 380 | 375 | 471 | 452 | 455 | 389 | 398 | 363 | 349 | 328 | — | — | — | — | 3 | — | 3 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 66 | 68 | 66 | 595 | 595 | 595 | 673 | 895 | 595 | 12 | 595 | 595 | 595 | 595 | 673 | 78 | 0 | 0 | 0 | 0 | 0 | 30 | 30 | 30 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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