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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm 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
23.5° C
(Which is 1.6°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 2AM is: 0.8m 9s primary swell from a East direction and 0.6m 9s secondary swell from a East-southeast direction (forecast issued at 08:00pm May 14). An open ocean swell of 0.2m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 4.5ft (1.3m) | 9s |
| Afternoon (15 May) | 4.5ft (1.3m) | 6s |
| Evening (15 May) | 5ft (1.5m) | 6s |
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 night, min 21°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Thu 14 | Friday 15 | Saturday 16 | Sunday 17 | |||||||||||||||||||||
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 | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 5 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | |
86 | 86 | 87 | 106 | 61 | 282 | 95 | 110 | 146 | 162 | 184 | 208 | 233 | 247 | 290 | 358 | 381 | 424 | 447 | 418 | 428 | 432 | 386 | 377 | |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 5:22PM1.74m | 5:08AM1.85m | 6:07PM1.83m | 5:42AM1.93m | 6:51PM1.87m | 6:18AM1.99m | ||||||||||||||||||
Low Tide | 11:10PM0.61m | 11:38AM0.11m | 11:50PM0.63m | 12:19PM-0.03m | 00:30AM0.67m | 12:59PM-0.11m | ||||||||||||||||||
 |  | |  | |  |  | | |  | | | | | | | | | | | | | | | |
 | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:37 | — | — | — | — |
 | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 23 |
22 | 23 | 22 | 21 | 19 | 18 | 18 | 20 | 18 | 18 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 18 | 18 | 20 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | ENE 11 | E 10 | E 10 | S 6 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | N 7 | N 7 | N 7 | SE 14 | SE 14 | SE 14 | ESE 14 | SE 14 | SE 13 | SE 13 |
 kJ | 86 | 86 | 64 | 68 | 61 | 23 | 46 | 47 | 1 | 34 | 36 | 36 | 34 | 20 | 4 | 4 | 3 | 7 | 7 | 7 | 18 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | E 9 | ENE 9 | SSE 7 | SSE 7 | ENE 11 | S 6 | SE 12 | SE 12 | SE 11 | S 6 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | — | — | — |
| kJ | 45 | 29 | 4 | 4 | 23 | 3 | 6 | 5 | 5 | 1 | 5 | 4 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SE 12 | ENE 11 | SSE 6 | SE 12 | S 6 | S 6 | E 16 | SE 11 | S 6 | SE 15 | SE 15 | N 7 | SE 14 | SE 14 | N 7 | — | — | — | — | — | — | — |
| kJ | 5 | 5 | 6 | 13 | 4 | 6 | 1 | 1 | 5 | 5 | 1 | 8 | 8 | 4 | 8 | 8 | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | E 3 | E 9 | E 9 | E 4 | E 9 | E 5 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 1 | 3 | 87 | 106 | 28 | 282 | 95 | 110 | 146 | 162 | 184 | 208 | 233 | 247 | 290 | 358 | 381 | 424 | 447 | 418 | 428 | 432 | 386 | 377 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 621 | 595 | 595 | 595 | 66 | 70 | 1004 | 595 | 595 | 595 | 70 | 70 | 70 | 595 | 984 | 955 | 595 | 595 | 595 | 66 | 40 | 68 | 595 | 66 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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