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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Friday 17 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 3PM is: 1.6m 14s primary swell from a East-southeast direction and 0.6m 8s secondary swell from a North direction, 0.8m 8s secondary swell from a East direction (forecast issued at 08:00am April 17). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 5.5ft (1.7m) | 15s |
| Afternoon (17 Apr) | 5ft (1.6m) | 14s |
| Evening (17 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
Friday 17 | Saturday 18 | Sunday 19 | Mon 20 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 15 | 14 | 15 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1346 | 1288 | 1220 | 1076 | 1254 | 1551 | 2007 | 2107 | 1551 | 1305 | 1223 | 1074 | 1045 | 1016 | 988 | 1016 | 874 | 849 | 824 | 919 | 975 | 971 | 1094 | 1067 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross- off |
High Tide / height (m) | 6:19AM 1.85 | 6:59PM 1.89 | 6:49AM 1.91 | 7:40PM 1.88 | 7:20AM 1.93 | 8:23PM 1.82 | ||||||||||||||||||
Low Tide / height (m) | 12:38PM 0.02 | 12:54AM 0.39 | 1:15PM -0.08 | 1:28AM 0.48 | 1:53PM -0.12 | 2:03AM 0.59 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Mon 20 | |||||||||||||||||||||
| Sunrise | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:51 | - | - | - | - | - | - | - | 6:51 | - | - | - | - | - | - | - | 6:52 | - | - | - |
 |  | | | |  | | | | |  | | |  | | | |  | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 22 | 22 | 21 | 21 | 20 | 20 |
| Feels °C (?) | 21 | 21 | 20 | 20 | 21 | 20 | 20 | 21 | 21 | 22 | 25 | 24 | 24 | 23 | 23 | 22 | 21 | 20 | 21 | 21 | 19 | 21 | 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)
FREE! Surf-Forecast.com widget for your website
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