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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Sunday 26 Apr 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
24.1° C
(Which is normal for this time of year)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 2PM is: 0.9m 10s primary swell from a Northeast direction and 0.1m 11s secondary swell from a Southeast direction, 0.4m 6s secondary swell from a North-northwest direction (forecast issued at 08:00am April 26). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Apr) | 2.5ft (0.7m) | 9s |
| Afternoon (26 Apr) | 3ft (0.9m) | 10s |
| Evening (26 Apr) | 2.5ft (0.8m) | 10s |
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 30mm), heaviest during Sun morning. Warm (max 22°C on Tue afternoon, min 18°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wed 29 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ENE 9 | NE 9 | NE 10 | NE 10 | NE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | |
58 | 90 | 94 | 142 | 142 | 125 | 125 | 125 | 125 | 125 | 122 | 83 | 78 | 76 | 73 | 54 | 45 | 42 | 41 | 27 | 26 | 26 | 26 | 21 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | glassy | glassy | glassy | glassy | cross | cross | cross | cross | cross | cross | |
High Tide | 3:23AM1.47m | 3:02PM1.40m | 4:07AM1.56m | 4:12PM1.51m | 4:42AM1.65m | 5:04PM1.61m | ||||||||||||||||||
Low Tide | 9:19AM0.84m | 9:30PM0.49m | 10:14AM0.65m | 10:22PM0.49m | 10:56AM0.47m | 11:04PM0.50m | ||||||||||||||||||
 |  | |  |  |  | | | | | | | | | | | | | | | |  | | | |
 | 5:52 | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:50 |
 | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:57 | — | — | 6:57 |
3 | 18 | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 18 | 20 | 21 | 20 | 20 | 20 | 19 | 20 | 20 | 21 | 21 | 20 | 20 | 19 | 19 | 20 | 21 | 22 | 21 | 21 | 21 | 21 |
19 | 18 | 19 | 19 | 21 | 18 | 18 | 18 | 16 | 18 | 18 | 19 | 20 | 19 | 20 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | |
Swell 1 Height (m) Direction Period (s) | ENE 9 | NE 9 | NE 10 | NE 10 | NE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
 kJ | 58 | 90 | 94 | 142 | 142 | 125 | 125 | 125 | 125 | 125 | 122 | 83 | 78 | 76 | 73 | 54 | 45 | 42 | 41 | 27 | 26 | 26 | 26 | 21 |
Swell 2 Height (m) Direction Period (s) | N 7 | N 7 | N 6 | SE 11 | SE 11 | SE 10 | NNW 5 | SSE 5 | SSE 4 | SSE 5 | NNW 5 | N 6 | NNW 6 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 |
| kJ | 34 | 23 | 22 | 5 | 5 | 4 | 7 | 2 | 2 | 2 | 17 | 15 | 10 | 10 | 9 | 5 | 5 | 9 | 9 | 9 | 9 | 9 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | S 5 | S 5 | S 5 | — | — | — | SSE 5 | SE 11 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | SE 9 | ESE 8 | SE 8 | SE 8 | N 5 | N 5 | N 5 | N 5 | N 4 | — | — |
| kJ | 2 | 2 | 2 | — | — | — | 2 | 5 | 16 | 14 | 14 | 14 | 14 | 3 | 7 | 10 | 10 | 4 | 2 | 2 | 2 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNW 6 | NNW 6 | NNW 6 | — | NNW 5 | NNW 5 | NNW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 13 | 12 | 12 | — | 14 | 15 | 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 3 | 12 | 30 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 84 | 0 | 0 | 0 | 0 | 596 | 687 | 681 | 681 | 683 | 687 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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