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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Monday 27 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 12PM is: 0.8m 10s primary swell from a East-northeast direction and 0.3m 12s secondary swell from a Southeast direction, 0.6m 6s secondary swell from a North-northwest direction (forecast issued at 08:00am April 27). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Apr) | 2.5ft (0.8m) | 10s |
| Afternoon (27 Apr) | 2.5ft (0.7m) | 10s |
| Evening (27 Apr) | 2.5ft (0.7m) | 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 27mm), heaviest during Wed night. Warm (max 22°C on Tue afternoon, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thu 30 | |||||||||||||||||||||
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 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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ESE 6 | NNW 8 | NNW 8 | |
125 | 125 | 122 | 83 | 78 | 76 | 73 | 54 | 44 | 42 | 28 | 27 | 26 | 26 | 26 | 22 | 13 | 12 | 13 | 13 | 13 | 16 | 22 | 67 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross-on | glassy | cross-off | off | glassy | glassy | cross | cross-off | glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-off | |
High Tide | 4:07AM1.56m | 4:12PM1.51m | 4:42AM1.65m | 5:04PM1.61m | 5:12AM1.72m | 5:46PM1.67m | ||||||||||||||||||
Low Tide | 10:14AM0.65m | 10:22PM0.49m | 10:56AM0.47m | 11:04PM0.50m | 11:32AM0.32m | 11:39PM0.53m | ||||||||||||||||||
 | | | | |  | |  |  | | | | | | | | | | | | | | |  | |
 | 5:52 | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 |
 | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — | 6:58 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | |
Temp °C | 20 | 20 | 20 | 21 | 21 | 20 | 20 | 20 | 19 | 20 | 21 | 22 | 21 | 21 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 22 | 22 | 21 |
17 | 17 | 17 | 19 | 19 | 19 | 19 | 20 | 19 | 21 | 21 | 21 | 20 | 21 | 19 | 19 | 19 | 20 | 21 | 20 | 21 | 21 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | 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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NNW 8 | NNW 8 |
 kJ | 125 | 125 | 122 | 83 | 78 | 76 | 73 | 54 | 44 | 42 | 28 | 27 | 26 | 26 | 26 | 22 | 13 | 12 | 13 | 13 | 13 | 12 | 22 | 67 |
Swell 2 Height (m) Direction Period (s) | SSE 4 | SSE 4 | SE 12 | SE 12 | NNW 6 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | N 5 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SE 7 | ESE 8 | ESE 7 | SE 7 | SE 6 | E 10 | ENE 8 | N 8 |
| kJ | 2 | 2 | 23 | 23 | 18 | 10 | 9 | 5 | 5 | 4 | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 6 | 5 | 7 | 6 | 8 | 6 | 10 |
Swell 3 Height (m) Direction Period (s) | ESE 13 | ESE 12 | S 4 | S 5 | SE 12 | SSE 9 | SSE 8 | SE 8 | SE 8 | SE 8 | N 5 | N 5 | N 5 | N 5 | N 4 | — | — | SE 7 | S 7 | — | SE 8 | SE 8 | N 8 | SE 11 |
| kJ | 16 | 14 | 2 | 2 | 23 | 7 | 7 | 10 | 10 | 9 | 2 | 2 | 2 | 2 | 2 | — | — | 2 | 1 | — | 2 | 2 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 6 | NNW 6 | NNW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 2 | ESE 6 | ESE 3 | ESE 4 |
| kJ | 22 | 24 | 25 | 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 16 | 7 | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 30 | 30 | 30 | 3 | 3 | 75 | 0 | 0 | 0 | 0 | 17 | 687 | 17 | 681 | 801 | 687 | 664 | 673 | 935 | 774 | 914 | 931 | 44 | 1290 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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