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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Friday 08 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 1.2°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 3PM is: 0.9m 9s primary swell from a East-southeast direction and 0.1m 7s secondary swell from a Northeast direction (forecast issued at 08:00am May 08). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 May) | 3ft (0.9m) | 9s |
| Afternoon (08 May) | 3ft (0.9m) | 9s |
| Evening (08 May) | 3ft (0.9m) | 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 35mm), heaviest during Sat afternoon. Warm (max 24°C on Fri morning, min 16°C on Sat morning). Winds increasing (calm on Fri morning, strong winds from the NE by Sat morning). | ||||||||||||||||||||||||
Friday 8 | Saturday 9 | Sunday 10 | Mon 11 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NE 7 | NE 7 | ENE 7 | E 7 | E 10 | E 9 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | |
143 | 146 | 146 | 149 | 149 | 153 | 153 | 202 | 336 | 367 | 430 | 393 | 346 | 186 | 156 | 426 | 481 | 466 | 477 | 466 | 439 | 425 | 386 | 386 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 9:15AM1.52m | 11:51PM1.36m | 10:15AM1.40m | 1:19AM1.38m | 12:02PM1.31m | 2:29AM1.45m | ||||||||||||||||||
Low Tide | 3:38AM1.06m | 4:36PM0.45m | 4:58AM1.11m | 5:48PM0.56m | 7:02AM1.07m | 7:16PM0.62m | ||||||||||||||||||
 |  | |  | |  |  | |  | | | | | | | | | | | | | |  | | |
 | 5:43 | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:41 |
 | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:02 | — | — | — | — | — | — | — | 7:02 | — | — | 7:04 |
— | — | — | — | — | — | 2 | 1 | 1 | 2 | 2 | 5 | 5 | 5 | 3 | 3 | 2 | 1 | 1 | — | — | — | — | 1 | |
Temp °C | 23 | 23 | 24 | 24 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 16 | 17 | 17 | 18 | 19 | 19 | 19 | 20 | 20 | 21 | 21 | 21 | 21 |
25 | 25 | 25 | 24 | 20 | 18 | 16 | 13 | 13 | 11 | 9 | 9 | 12 | 13 | 14 | 15 | 14 | 15 | 16 | 16 | 17 | 18 | 18 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | N 7 | N 7 | N 7 | N 7 | N 6 | N 6 | N 6 | N 6 | N 6 | SE 12 | SE 12 |
 kJ | 143 | 146 | 146 | 149 | 149 | 153 | 153 | 159 | 143 | 176 | 140 | 140 | 131 | 94 | 74 | 45 | 32 | 19 | 12 | 12 | 6 | 6 | 24 | 23 |
Swell 2 Height (m) Direction Period (s) | E 8 | — | — | NE 7 | — | — | — | — | — | — | — | — | N 7 | ESE 10 | ESE 10 | NE 8 | — | — | SE 15 | S 15 | SE 13 | SE 13 | N 6 | N 6 |
| kJ | 1 | — | — | 2 | — | — | — | — | — | — | — | — | 52 | 131 | 102 | 3 | — | — | 8 | 4 | 7 | 27 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | NE 5 | — | NE 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 6 | N 6 | — |
| kJ | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNE 3 | NNE 4 | NNE 5 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NE 7 | NE 7 | ENE 7 | E 7 | E 10 | E 9 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 |
| kJ | — | — | — | — | 3 | 32 | 77 | 202 | 336 | 367 | 430 | 393 | 346 | 186 | 156 | 426 | 481 | 466 | 477 | 466 | 439 | 425 | 386 | 386 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 30 | 46 | 605 | 596 | 596 | 595 | 595 | 595 | 595 | 955 | 690 | 595 | 595 | 66 | 595 | 595 | 931 | 70 | 70 | 595 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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