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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm 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
23.8° C
(Which is slightly cooler than normal)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 11PM is: 1.1m 7s primary swell from a Northwest direction (forecast issued at 08:00pm April 30). An open ocean swell of 0.5m 5s is not directed at the surf break, a second open ocean swell of 0.5m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | - | - |
| Afternoon (30 Apr) | - | - |
| Evening (30 Apr) | 3ft (0.9m) | 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 8mm), mostly falling on Thu night. Warm (max 25°C on Sun afternoon, min 19°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Thu 30 | Friday 1 | Saturday 2 | Sunday 3 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
NNW 7 | NW 7 | NW 7 | NNW 7 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 7 | N 7 | N 7 | ESE 10 | N 7 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | |
20 | 75 | 139 | 163 | 206 | 209 | 191 | 153 | 145 | 118 | 113 | 92 | 74 | 71 | 69 | 69 | 69 | 72 | 74 | 75 | 75 | 74 | 72 | 68 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 6:23PM1.70m | 6:04AM1.81m | 6:56PM1.70m | 6:27AM1.83m | 7:27PM1.67m | 6:51AM1.83m | ||||||||||||||||||
Low Tide | 00:09AM0.58m | 12:34PM0.15m | 00:35AM0.64m | 1:03PM0.11m | 1:00AM0.70m | 1:31PM0.11m | ||||||||||||||||||
 |  | | | |  | | | |  | | | | | | | | | |  |  | |  | | |
 | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — |
 | 6:58 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:59 | — | — | — | — | — | — | 6:59 |
1 | 1 | 1 | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 21 | 20 | 19 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 20 | 21 | 21 | 22 | 23 | 24 | 25 |
22 | 19 | 18 | 17 | 16 | 15 | 14 | 14 | 15 | 15 | 16 | 16 | 16 | 16 | 18 | 17 | 20 | 17 | 18 | 19 | 21 | 23 | 24 | 25 | |
Swell 1 Height (m) Direction Period (s) | SSE 6 | SSE 6 | S 5 | E 9 | ESE 8 | ESE 9 | ESE 9 | E 9 | ESE 9 | ESE 9 | N 7 | N 7 | N 7 | N 7 | N 7 | N 7 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 |
 kJ | 42 | 24 | 14 | 39 | 28 | 46 | 47 | 39 | 48 | 48 | 113 | 92 | 74 | 56 | 56 | 43 | 69 | 72 | 74 | 75 | 75 | 74 | 72 | 68 |
Swell 2 Height (m) Direction Period (s) | WSW 7 | WSW 7 | SW 6 | SSE 5 | S 5 | S 5 | S 5 | ESE 10 | SW 6 | SW 6 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | N 7 | N 7 | N 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 |
| kJ | 35 | 29 | 10 | 9 | 5 | 5 | 2 | 10 | 1 | 1 | 49 | 50 | 51 | 71 | 69 | 69 | 33 | 33 | 22 | 13 | 8 | 7 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | NNW 7 | NW 8 | ESE 8 | SW 6 | SW 6 | WSW 6 | SW 6 | S 5 | SW 6 | — | SW 6 | NE 8 | NW 6 | WNW 5 | NE 9 | NE 9 | NE 8 | NE 8 | E 8 | E 8 | NE 8 | NE 8 | SE 11 | SE 11 |
| kJ | 20 | 24 | 28 | 9 | 6 | 4 | 2 | 2 | 1 | — | 1 | 3 | 15 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 3 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | NW 5 | NW 7 | NW 7 | NNW 7 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 7 | N 7 | NE 4 | NE 4 | ENE 4 | E 3 | ESE 3 | SE 3 | SE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | S 4 |
| kJ | 12 | 75 | 139 | 163 | 206 | 209 | 191 | 153 | 145 | 118 | 74 | 45 | 5 | 3 | 3 | 1 | 1 | 3 | 10 | 13 | 18 | 17 | 17 | 27 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 94 | 75 | 75 | 75 | 639 | 639 | 965 | 984 | 627 | 40 | 40 | 40 | 12 | 12 | 12 | 687 | 0 | 605 | 596 | 596 | 605 | 645 | 664 | 687 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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