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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 pm Wednesday 13 May 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
23.6° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 6PM is: 1.0m 9s primary swell from a East direction (forecast issued at 02:00pm May 13). An open ocean swell of 0.3m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | - | - |
| Afternoon (13 May) | 3.5ft (1.1m) | 10s |
| Evening (13 May) | 3.5ft (1.0m) | 9s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Wed afternoon, min 22°C on Wed night). Winds increasing (light winds from the ENE on Wed night, fresh winds from the E by Fri night). | ||||||||||||||||||||||||
Wed 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 10 | E 10 | E 9 | E 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 9 | ENE 9 | ESE 9 | E 9 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | ENE 7 | |
122 | 219 | 173 | 173 | 98 | 98 | 98 | 123 | 94 | 113 | 86 | 86 | 92 | 69 | 61 | 70 | 141 | 184 | 202 | 222 | 243 | 203 | 209 | 222 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 4:32PM1.61m | 4:33AM1.75m | 5:22PM1.74m | 5:08AM1.85m | 6:07PM1.83m | 5:42AM1.93m | ||||||||||||||||||
Low Tide | 10:18AM0.51m | 10:26PM0.60m | 10:59AM0.30m | 11:10PM0.61m | 11:38AM0.11m | 11:50PM0.63m | ||||||||||||||||||
 |  | |  | | |  | | | | |  | | | | | | | |  | | | | | |
 | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — |
 | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
24 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 23 | 21 | 20 | 21 | 20 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 18 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 9 | E 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | SE 12 | SE 12 | ESE 10 | SE 11 | SE 11 | ENE 9 | ENE 9 | ESE 10 |
 kJ | 122 | 219 | 173 | 173 | 98 | 98 | 98 | 123 | 94 | 113 | 86 | 86 | 64 | 69 | 61 | 43 | 6 | 5 | 36 | 5 | 5 | 28 | 28 | 20 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SSE 8 | SSE 8 | SSE 7 | ENE 9 | ENE 9 | E 9 | SSE 7 | ENE 9 | ENE 9 | E 9 | ENE 9 | SSE 7 | E 9 | ENE 11 | ENE 11 | S 6 | S 6 | S 6 | S 6 | S 6 | ESE 11 | ESE 11 | SE 11 |
| kJ | 65 | 11 | 11 | 11 | 61 | 59 | 55 | 5 | 46 | 17 | 45 | 29 | 4 | 42 | 23 | 23 | 1 | 1 | 1 | 1 | 1 | 23 | 23 | 5 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 12 | SSE 7 | SSE 6 | S 6 | E 16 | E 16 | SE 11 | SE 16 | E 15 | SE 11 | ESE 11 | SE 15 |
| kJ | 13 | 11 | 11 | 11 | 11 | 11 | 5 | 10 | 5 | 5 | 5 | 5 | 6 | 4 | 4 | 3 | 5 | 5 | 5 | 10 | 5 | 5 | 11 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 3 | — | — | ENE 9 | — | ENE 9 | ENE 3 | ENE 3 | ENE 9 | E 4 | ENE 4 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | ENE 7 |
| kJ | — | — | — | — | 1 | — | — | 46 | — | 69 | 2 | 3 | 92 | 16 | 31 | 70 | 141 | 184 | 202 | 222 | 243 | 203 | 209 | 222 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 66 | 12 | 66 | 12 | 12 | 12 | 60 | 66 | 60 | 595 | 595 | 595 | 595 | 595 | 595 | 595 | 683 | 861 | 595 | 595 | 595 | 68 | 66 | 70 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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