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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Sunday 03 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 1.2°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 5AM is: 0.6m 9s primary swell from a East-southeast direction and 1.1m 5s secondary swell from a North-northwest direction (forecast issued at 08:00pm May 03). An open ocean swell of 0.7m 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 (04 May) | 3ft (0.9m) | 6s |
| Afternoon (04 May) | 4ft (1.2m) | 6s |
| Evening (04 May) | 4.5ft (1.3m) | 6s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 86mm), heaviest during Tue night. Warm (max 25°C on Sun night, min 15°C on Mon afternoon). Winds decreasing (fresh winds from the NE on Mon afternoon, light winds from the WNW by Wed afternoon). | ||||||||||||||||||||||||
Sun 3 | Monday 4 | Tuesday 5 | Wednesday 6 | |||||||||||||||||||||
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 | ESE 9 | ESE 9 | NNW 5 | N 6 | NNW 6 | N 6 | N 6 | N 6 | N 7 | N 7 | N 7 | NNW 7 | E 9 | E 10 | E 10 | E 10 | E 6 | E 6 | E 9 | E 9 | E 9 | E 8 | |
66 | 66 | 65 | 65 | 73 | 66 | 80 | 92 | 94 | 120 | 152 | 100 | 83 | 77 | 64 | 65 | 68 | 68 | 97 | 143 | 318 | 351 | 286 | 409 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | |
High Tide | 7:59PM1.63m | 7:14AM1.81m | 8:31PM1.58m | 7:39AM1.77m | 9:06PM1.52m | 8:05AM1.71m | ||||||||||||||||||
Low Tide | 1:24AM0.77m | 1:59PM0.13m | 1:50AM0.84m | 2:29PM0.18m | 2:17AM0.91m | |||||||||||||||||||
 |  |  | |  | | | |  | | | | | | | |  |  | | |  | |  | | |
 | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — | — | — | — |
 | 6:59 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | 7:00 |
— | — | 1 | 3 | — | — | — | — | 1 | 2 | 2 | 3 | 1 | — | — | 2 | 7 | 10 | 6 | 5 | 16 | 14 | 13 | — | |
Temp °C | 25 | 25 | 21 | 20 | 19 | 20 | 20 | 18 | 15 | 16 | 16 | 15 | 17 | 18 | 18 | 18 | 18 | 19 | 19 | 20 | 21 | 21 | 21 | 22 |
24 | 25 | 19 | 17 | 15 | 17 | 14 | 11 | 9 | 11 | 12 | 11 | 13 | 14 | 15 | 15 | 15 | 15 | 16 | 17 | 20 | 20 | 20 | 23 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | W 6 | W 7 | W 7 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | N 7 | N 7 | NNW 7 | NNW 7 | NNW 7 | N 6 | E 10 | ESE 10 | ESE 10 | NNW 6 | NNW 6 | E 9 | E 9 |
 kJ | 66 | 66 | 45 | 45 | 45 | 66 | 68 | 69 | 69 | 69 | 64 | 100 | 83 | 77 | 47 | 34 | 29 | 68 | 72 | 71 | 7 | 7 | 286 | 251 |
Swell 2 Height (m) Direction Period (s) | N 6 | N 6 | ESE 9 | ESE 9 | ESE 9 | W 7 | WSW 6 | W 6 | W 6 | W 7 | W 7 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | N 6 | N 6 | NNW 6 | N 6 | NNW 6 | NNW 6 | NNW 6 |
| kJ | 1 | 1 | 65 | 65 | 65 | 34 | 13 | 21 | 21 | 15 | 8 | 64 | 64 | 64 | 64 | 65 | 68 | 20 | 19 | 8 | 1 | 4 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | SE 11 | — | S 5 | SSE 5 | S 5 | NW 6 | W 7 | E 12 | E 12 | W 6 | NW 6 | W 7 | NW 6 | W 6 | W 6 | — | — | — | — | — | — | — | NNW 6 | — |
| kJ | 5 | — | 16 | 7 | 4 | 18 | 4 | 3 | 3 | 1 | 1 | 3 | 11 | 1 | 1 | — | — | — | — | — | — | — | 4 | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SW 5 | W 6 | NNW 4 | NNW 5 | N 6 | NNW 6 | N 6 | N 6 | N 6 | N 7 | ENE 4 | NE 4 | ENE 5 | ENE 5 | E 5 | E 5 | E 5 | E 6 | E 6 | E 9 | E 9 | — | E 8 |
| kJ | 50 | 57 | 3 | 30 | 73 | 49 | 80 | 92 | 94 | 120 | 152 | 13 | 19 | 30 | 49 | 55 | 65 | 64 | 97 | 143 | 318 | 351 | — | 409 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 664 | 0 | 78 | 627 | 627 | 639 | 681 | 605 | 596 | 596 | 40 | 40 | 596 | 68 | 595 | 627 | 595 | 595 | 595 | 595 | 70 | 673 | 40 | 0 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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