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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 am 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
24.3° C
(Which is slightly warmer than usual)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 9AM is: 1.5m 13s primary swell from a East direction and 0.7m 11s secondary swell from a East-northeast direction, 0.6m 5s secondary swell from a Northwest direction (forecast issued at 02:00am April 20). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 5ft (1.5m) | 13s |
| 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 | ||||||||||||||||||||||
| 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) (?) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 806 | 794 | 772 | 772 | 660 | 660 | 551 | 543 | 538 | 420 | 342 | 339 | 316 | 305 | 265 | 265 | 265 | 251 | 202 | 198 | 194 | 184 | 144 | 139 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | glass | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:53AM 1.90 | 9:08PM 1.70 | 8:29AM 1.84 | 10:01PM 1.57 | 9:09AM 1.73 | |||||||||||||||||||
Low Tide / height (m) | 2:03AM 0.59 | 2:35PM -0.08 | 2:40AM 0.71 | 3:20PM 0.01 | 3:22AM 0.84 | 4:14PM 0.15 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||||
| Sunrise | - | - | 5:58 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:56 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:53 | - |
 | |  | | | |  | |  |  |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 20 | 20 | 21 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 21 | 22 | 23 | 22 | 22 |
| Feels °C (?) | 20 | 18 | 18 | 18 | 19 | 20 | 20 | 18 | 19 | 19 | 18 | 20 | 20 | 20 | 21 | 22 | 23 | 21 | 20 | 20 | 20 | 21 | 21 | 21 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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