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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Monday 20 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
24.4° C
(Which is slightly warmer than usual)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 9PM is: 1.3m 13s primary swell from a East direction and 0.5m 10s secondary swell from a Northeast direction, 0.9m 5s secondary swell from a Northwest direction (forecast issued at 02:00pm April 20). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | - | - |
| Afternoon (20 Apr) | 4.5ft (1.4m) | 13s |
| Evening (20 Apr) | 4.5ft (1.3m) | 13s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 660 | 660 | 551 | 543 | 538 | 423 | 342 | 280 | 316 | 305 | 265 | 265 | 265 | 251 | 202 | 198 | 188 | 153 | 144 | 139 | 106 | 106 | 104 | 104 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off |
High Tide / height (m) | 9:08PM 1.70 | 8:29AM 1.84 | 10:01PM 1.57 | 9:09AM 1.73 | 11:05PM 1.44 | |||||||||||||||||||
Low Tide / height (m) | 2:35PM -0.08 | 2:40AM 0.71 | 3:20PM 0.01 | 3:22AM 0.84 | 4:14PM 0.15 | 4:17AM 0.97 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:56 | - | - | - | - | - | - | - | 5:56 | - |
| Sunset | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:53 | - | - | - | - | - |
 | |  |  | |  | |  | | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 22 | 23 | 22 | 22 | 23 | 23 | 23 | 24 |
| Feels °C (?) | 20 | 20 | 19 | 20 | 19 | 19 | 19 | 20 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 21 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 22 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Aha Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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