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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 am Wednesday 15 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
23.9° C
(Which is slightly warmer than usual)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 7AM is: 1.1m 13s primary swell from a East-southeast direction (forecast issued at 02:00am April 15). An open ocean swell of 0.5m 6s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Apr) | 4.5ft (1.4m) | 18s |
| Afternoon (15 Apr) | 5.5ft (1.7m) | 16s |
| Evening (15 Apr) | 6ft (1.8m) | 16s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||||||||||
| 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 | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 13 | 13 | 18 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 16 | 15 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 317 | 378 | 396 | 1165 | 1284 | 1427 | 1647 | 1675 | 1740 | 1418 | 1292 | 1613 | 1654 | 1613 | 1613 | 1572 | 1613 | 1382 | 1364 | 1531 | 1288 | 1136 | 1121 | 1121 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- off | cross- off | cross- off | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross |
High Tide / height (m) | 5:23AM 1.69 | 5:39PM 1.74 | 5:51AM 1.78 | 6:19PM 1.84 | 6:19AM 1.85 | 6:59PM 1.89 | ||||||||||||||||||
Low Tide / height (m) | 11:08PM 0.34 | 11:30AM 0.36 | 11:45PM 0.32 | 12:03PM 0.17 | 12:20AM 0.34 | 12:38PM 0.02 | ||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:51 | - |
 | |  |  | |  | |  | | | | |  | | |  | | | | | | | | | |
Rain (mm) | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 23 | 24 | 25 | 24 | 24 | 23 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 22 | 22 |
| Feels °C (?) | 26 | 25 | 26 | 26 | 25 | 24 | 23 | 21 | 19 | 20 | 20 | 20 | 19 | 19 | 22 | 22 | 21 | 20 | 19 | 19 | 19 | 20 | 20 | 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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