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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Saturday 18 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 9PM is: 1.6m 14s primary swell from a East-southeast direction and 1.1m 10s secondary swell from a East-northeast direction (forecast issued at 02:00pm April 18). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | - | - |
| Afternoon (18 Apr) | 5ft (1.6m) | 15s |
| Evening (18 Apr) | 5ft (1.6m) | 14s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1223 | 1074 | 1045 | 1016 | 975 | 1016 | 986 | 887 | 836 | 812 | 919 | 943 | 915 | 794 | 782 | 772 | 663 | 660 | 660 | 560 | 546 | 437 | 413 | 344 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross | cross | cross- on | glass | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross- on | cross- on |
High Tide / height (m) | 7:40PM 1.88 | 7:20AM 1.93 | 8:23PM 1.82 | 7:53AM 1.90 | 9:08PM 1.70 | 8:29AM 1.84 | ||||||||||||||||||
Low Tide / height (m) | 1:15PM -0.08 | 1:28AM 0.48 | 1:53PM -0.12 | 2:03AM 0.59 | 2:35PM -0.08 | 2:40AM 0.71 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:58 | - |
| Sunset | - | - | 6:51 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - |
 | |  |  |  | | |  | | | | | | | | | | | |  | | | |  | |
Rain (mm) | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 21 | 22 | 21 | 21 | 20 | 20 | 20 | 20 | 21 |
| Feels °C (?) | 26 | 24 | 24 | 23 | 25 | 22 | 21 | 22 | 22 | 22 | 21 | 22 | 20 | 19 | 19 | 19 | 18 | 17 | 19 | 18 | 18 | 17 | 17 | 20 |
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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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