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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Saturday 21 Mar 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
21.5° C
(Which is slightly cooler than normal)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 8PM is: 0.7m 13s primary swell from a East-northeast direction and 0.6m 6s secondary swell from a North direction, 0.8m 4s secondary swell from a East direction (forecast issued at 02:00pm March 21). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | - | - |
| Afternoon (21 Mar) | 2.5ft (0.7m) | 13s |
| Evening (21 Mar) | 2.5ft (0.7m) | 13s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| 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 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 154 | 151 | 149 | 145 | 106 | 104 | 61 | 81 | 116 | 115 | 107 | 70 | 68 | 67 | 66 | 65 | 64 | 60 | 38 | 37 | 37 | 37 | 21 | 15 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 8:30PM 1.80 | 8:22AM 1.81 | 9:13PM 1.68 | 8:54AM 1.77 | 10:02PM 1.52 | |||||||||||||||||||
Low Tide / height (m) | 2:11PM -0.01 | 2:25AM 0.36 | 2:50PM -0.01 | 2:58AM 0.51 | 3:34PM 0.05 | 3:33AM 0.68 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:26 |
| Sunset | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:38 | - | - | - | - | - |
 |  |  |  |  | |  |  | | | |  | | | |  | | | |  | | | | | |
Rain (mm) | - | - | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 19 | 18 | 18 | 19 | 20 | 20 | 21 | 21 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 |
| Feels °C (?) | 16 | 16 | 15 | 15 | 16 | 17 | 18 | 19 | 18 | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 17 | 18 | 18 | 18 | 19 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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