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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Thursday 30 Apr 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 slightly cooler than normal)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 12PM is: 0.5m 7s primary swell from a North-northwest direction and 0.2m 8s secondary swell from a East-northeast direction (forecast issued at 08:00am April 30). An open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 1.5ft (0.4m) | 7s |
| Afternoon (30 Apr) | 1.5ft (0.5m) | 6s |
| Evening (30 Apr) | 3.5ft (1.0m) | 7s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 7mm), mostly falling on Thu morning. Warm (max 24°C on Thu morning, min 18°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NNW 7 | NNW 7 | NNW 7 | SE 6 | NNW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 7 | N 7 | N 7 | N 7 | ESE 10 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | |
18 | 20 | 29 | 17 | 28 | 88 | 135 | 143 | 200 | 194 | 198 | 176 | 168 | 139 | 113 | 92 | 77 | 60 | 71 | 69 | 69 | 72 | 75 | 75 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | |
High Tide | 5:39AM1.77m | 6:23PM1.70m | 6:04AM1.81m | 6:56PM1.70m | 6:27AM1.83m | 7:27PM1.67m | ||||||||||||||||||
Low Tide | 12:04PM0.21m | 00:09AM0.58m | 12:34PM0.15m | 00:35AM0.64m | 1:03PM0.11m | 1:00AM0.70m | ||||||||||||||||||
 |  | | | |  | |  |  |  | | | |  | | | | | | | | | | | |
 | 5:50 | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 |
 | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:59 | — | — | 6:59 |
1 | 2 | 1 | 2 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 23 | 24 | 22 | 21 | 20 | 20 | 20 | 19 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 20 | 21 | 22 |
23 | 21 | 23 | 21 | 20 | 18 | 18 | 17 | 14 | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 17 | 18 | 20 | |
Swell 1 Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 7 | S 5 | SSE 6 | SSE 6 | SSE 5 | ESE 9 | ESE 8 | ESE 9 | E 9 | ESE 9 | ESE 9 | NNW 7 | N 7 | N 7 | N 7 | N 7 | N 7 | N 7 | N 7 | ESE 10 | ESE 10 | ESE 10 |
 kJ | 18 | 20 | 29 | 20 | 33 | 24 | 9 | 43 | 28 | 46 | 42 | 48 | 48 | 139 | 113 | 92 | 77 | 60 | 58 | 44 | 32 | 72 | 75 | 75 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 7 | ENE 8 | SE 6 | WSW 7 | WSW 7 | WSW 6 | S 5 | S 5 | S 5 | S 5 | S 5 | SW 6 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | N 6 | N 6 | NNW 6 |
| kJ | 4 | 9 | 6 | 17 | 38 | 29 | 16 | 9 | 5 | 2 | 2 | 2 | 1 | 48 | 49 | 51 | 51 | 51 | 71 | 69 | 69 | 22 | 21 | 13 |
Swell 3 Height (m) Direction Period (s) | ENE 8 | ENE 8 | E 10 | E 10 | NNW 7 | NW 8 | ESE 8 | SW 6 | SW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | — | SW 6 | NE 8 | — | WNW 5 | NE 9 | NE 4 | NE 8 | NE 8 | NE 8 | E 8 |
| kJ | 6 | 6 | 8 | 7 | 28 | 25 | 28 | 6 | 5 | 4 | 2 | 2 | 1 | — | 1 | 3 | — | 3 | 3 | 1 | 3 | 3 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | S 5 | SSW 5 | SSW 5 | W 7 | NW 5 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 7 | NNW 7 | NNW 7 | N 7 | N 7 | NE 4 | NE 4 | NE 5 | ENE 4 | ESE 3 | SE 3 | SE 3 | SSE 4 | SSE 4 |
| kJ | 42 | 75 | 99 | 111 | 30 | 88 | 135 | 143 | 200 | 194 | 198 | 176 | 168 | 94 | 74 | 5 | 4 | 5 | 3 | 1 | 2 | 3 | 8 | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1385 | 951 | 621 | 75 | 94 | 75 | 75 | 75 | 639 | 651 | 984 | 761 | 627 | 40 | 40 | 12 | 12 | 12 | 627 | 683 | 683 | 605 | 605 | 605 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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