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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Monday 13 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
23.3° 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 11s primary swell from a East-southeast direction and 0.2m 5s secondary swell from a North direction (forecast issued at 08:00am April 13). An open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Apr) | 2.5ft (0.8m) | 10s |
| Afternoon (13 Apr) | 2.5ft (0.8m) | 11s |
| Evening (13 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
Monday 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||||||||
| 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 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 13 | 13 | 18 | 17 | 16 | 17 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 136 | 144 | 150 | 150 | 147 | 144 | 141 | 144 | 144 | 191 | 187 | 187 | 242 | 298 | 298 | 378 | 396 | 1165 | 1284 | 1608 | 1893 | 2021 | 1972 | 2133 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | off | cross- off | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | cross | cross- on | cross- on | cross- on |
High Tide / height (m) | 4:30AM 1.47 | 4:05PM 1.42 | 4:56AM 1.58 | 4:55PM 1.59 | 5:23AM 1.69 | 5:39PM 1.74 | ||||||||||||||||||
Low Tide / height (m) | 10:24AM 0.77 | 10:27PM 0.40 | 10:57AM 0.56 | 11:08PM 0.34 | 11:30AM 0.36 | 11:45PM 0.32 | ||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||||||||
| Sunrise | - | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:50 | - | - | - |
 |  |  | | |  | | |  |  |  | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 2 | 3 | 2 | 1 | 1 | 1 | - | - | - | 1 | 3 | 2 | - | - | - | - |
| Temp. °C | 25 | 25 | 26 | 26 | 25 | 24 | 23 | 23 | 25 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 24 | 25 | 24 | 24 | 23 | 23 | 22 |
| Feels °C (?) | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 25 | 26 | 25 | 25 | 24 |
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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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