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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Tuesday 14 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
23.5° 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 East-southeast direction and 0.4m 13s secondary swell from a Southeast direction (forecast issued at 08:00am April 14). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Apr) | 3ft (0.9m) | 10s |
| Afternoon (14 Apr) | 3ft (0.9m) | 10s |
| Evening (14 Apr) | 3.5ft (1.0m) | 12s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||||||||
| 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 13 | 13 | 18 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 144 | 155 | 187 | 187 | 242 | 298 | 317 | 378 | 396 | 1165 | 1284 | 1589 | 1569 | 1675 | 1474 | 1418 | 1292 | 1634 | 1697 | 1849 | 1654 | 1654 | 1634 | 1437 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | cross- off | cross | cross- off | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 4:56AM 1.58 | 4:55PM 1.59 | 5:23AM 1.69 | 5:39PM 1.74 | 5:51AM 1.78 | 6:19PM 1.84 | ||||||||||||||||||
Low Tide / height (m) | 10:57AM 0.56 | 11:08PM 0.34 | 11:30AM 0.36 | 11:45PM 0.32 | 12:03PM 0.17 | 12:20AM 0.34 | ||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||||||||
| Sunrise | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:50 | - | - | - |
 |  | | | |  | |  | |  |  | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 24 | 25 | 26 | 25 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 |
| Feels °C (?) | 25 | 24 | 24 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 22 | 23 | 21 | 21 | 20 | 20 | 19 | 19 | 20 | 19 | 20 | 22 | 21 | 20 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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