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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Thursday 14 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 1PM is: 0.8m 10s primary swell from a East direction and 0.4m 9s secondary swell from a East-northeast direction (forecast issued at 08:00am May 14). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 2.5ft (0.8m) | 10s |
| Afternoon (14 May) | 2.5ft (0.8m) | 9s |
| Evening (14 May) | 2.5ft (0.7m) | 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 Thu morning, min 22°C on Thu morning). Winds increasing (light winds from the E on Thu morning, fresh winds from the ENE by Fri afternoon). | ||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | Sun 17 | |||||||||||||||||||||
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 | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | E 9 | ESE 9 | E 9 | E 9 | E 9 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | |
98 | 123 | 94 | 113 | 86 | 87 | 64 | 106 | 61 | 241 | 92 | 106 | 146 | 190 | 196 | 187 | 231 | 245 | 285 | 285 | 320 | 337 | 350 | 333 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 4:33AM1.75m | 5:22PM1.74m | 5:08AM1.85m | 6:07PM1.83m | 5:42AM1.93m | 6:51PM1.87m | ||||||||||||||||||
Low Tide | 10:59AM0.30m | 11:10PM0.61m | 11:38AM0.11m | 11:50PM0.63m | 12:19PM-0.03m | 00:30AM0.67m | ||||||||||||||||||
 |  | | | |  |  |  |  | | | | | | | | | | | | | | | | |
 | 5:39 | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:37 |
 | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 22 |
23 | 22 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 18 | 18 | 19 | 18 | 18 | 19 | 19 | 19 | 19 | 20 | 20 | 19 | 18 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | ENE 11 | E 10 | E 10 | ESE 10 | ESE 10 | ESE 10 | ENE 9 | ESE 10 | ESE 11 | N 7 | N 7 | N 7 | N 6 | N 6 | ESE 14 |
 kJ | 98 | 123 | 94 | 113 | 86 | 65 | 64 | 69 | 61 | 23 | 46 | 47 | 33 | 34 | 36 | 28 | 20 | 22 | 4 | 9 | 8 | 7 | 11 | 18 |
Swell 2 Height (m) Direction Period (s) | E 9 | ENE 9 | E 9 | ENE 9 | E 9 | SSE 7 | ENE 9 | SSE 7 | ENE 11 | S 6 | S 6 | S 6 | S 6 | SE 11 | SE 11 | ESE 10 | SE 11 | ESE 11 | SE 15 | SE 11 | SE 11 | SE 14 | SE 14 | SE 10 |
| kJ | 55 | 46 | 41 | 17 | 45 | 5 | 29 | 4 | 23 | 3 | 1 | 1 | 1 | 5 | 5 | 21 | 5 | 11 | 8 | 5 | 5 | 7 | 7 | 4 |
Swell 3 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 12 | SSE 7 | ENE 11 | SSE 6 | SE 12 | SE 12 | SE 12 | SE 11 | S 6 | E 15 | SE 11 | SE 15 | N 7 | SE 11 | — | N 7 | SE 10 | SE 10 | — |
| kJ | 5 | 5 | 5 | 5 | 5 | 6 | 4 | 13 | 4 | 6 | 6 | 5 | 5 | 1 | 5 | 5 | 8 | 4 | 5 | — | 1 | 4 | 4 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | ENE 3 | ENE 3 | E 9 | E 4 | E 9 | E 4 | E 9 | E 5 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 |
| kJ | — | — | — | 1 | 3 | 87 | 7 | 106 | 28 | 241 | 92 | 106 | 146 | 190 | 196 | 187 | 231 | 245 | 285 | 285 | 320 | 337 | 350 | 333 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 44 | 44 | 595 | 595 | 595 | 595 | 595 | 595 | 595 | 861 | 595 | 595 | 595 | 70 | 40 | 40 | 68 | 68 | 68 | 595 | 70 | 66 | 66 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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