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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Thursday 23 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
24.3° C
(Which is normal for this time of year)How big are the waves at Aha Rivermouth today?
The current surf forecast for Aha Rivermouth at 2PM is: 0.6m 10s primary swell from a East-northeast direction and 0.2m 13s secondary swell from a East-southeast direction (forecast issued at 08:00am April 23). An open ocean swell of 1.5m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | 2ft (0.6m) | 10s |
| Afternoon (23 Apr) | 2ft (0.6m) | 10s |
| Evening (23 Apr) | 1.5ft (0.5m) | 10s |
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 37mm), heaviest during Thu afternoon. Warm (max 24°C on Thu morning, min 20°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sun 26 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 10 | E 10 | E 10 | E 10 | NNW 8 | NNW 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | NE 9 | NE 9 | |
104 | 78 | 78 | 78 | 73 | 52 | 53 | 53 | 53 | 70 | 85 | 98 | 127 | 165 | 205 | 200 | 195 | 190 | 153 | 127 | 121 | 93 | 84 | 88 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-off | cross | cross | cross-off | cross-off | |
High Tide | 9:58AM1.58m | 00:34AM1.37m | 11:13AM1.43m | 2:15AM1.39m | 1:13PM1.35m | |||||||||||||||||||
Low Tide | 4:17AM0.97m | 5:21PM0.31m | 5:47AM1.04m | 6:48PM0.43m | 7:51AM1.00m | 8:18PM0.48m | ||||||||||||||||||
 |  |  |  |  |  | |  | | | | | | | | | | | | | |  |  | | |
 | 5:56 | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:52 |
 | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | 6:55 |
— | 1 | 6 | 18 | 2 | 3 | 1 | — | 1 | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 24 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 20 |
22 | 23 | 22 | 23 | 23 | 23 | 23 | 20 | 21 | 21 | 20 | 19 | 20 | 19 | 17 | 17 | 18 | 18 | 19 | 19 | 19 | 20 | 20 | 19 | |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SSW 6 | S 6 | WSW 6 | WSW 6 | S 6 | NNW 8 | NNW 8 | N 8 | N 8 | SSE 6 | SSE 6 | S 6 | SSW 6 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 | NE 9 |
 kJ | 104 | 78 | 78 | 78 | 48 | 21 | 41 | 30 | 15 | 70 | 85 | 98 | 127 | 10 | 10 | 20 | 12 | 190 | 153 | 127 | 121 | 93 | 70 | 88 |
Swell 2 Height (m) Direction Period (s) | ESE 13 | ESE 13 | ESE 13 | ESE 13 | E 10 | E 10 | S 5 | S 5 | E 10 | W 7 | S 6 | S 7 | SSW 7 | SW 7 | SW 7 | ENE 10 | ENE 10 | SSW 6 | S 6 | S 6 | NE 9 | NE 9 | NE 9 | N 7 |
| kJ | 17 | 17 | 17 | 17 | 73 | 52 | 14 | 14 | 53 | 23 | 15 | 32 | 18 | 12 | 11 | 18 | 18 | 12 | 12 | 6 | 41 | 67 | 84 | 52 |
Swell 3 Height (m) Direction Period (s) | NNW 7 | N 6 | N 7 | N 6 | ESE 13 | ESE 13 | E 10 | E 10 | WNW 6 | S 6 | W 7 | WNW 6 | WNW 6 | ENE 10 | ENE 10 | ESE 12 | ESE 12 | ENE 9 | ENE 10 | ENE 10 | S 6 | WNW 5 | S 5 | S 5 |
| kJ | 4 | 3 | 1 | 1 | 17 | 17 | 53 | 53 | 13 | 16 | 23 | 15 | 14 | 19 | 18 | 14 | 14 | 17 | 18 | 18 | 6 | 4 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | WSW 6 | WSW 7 | W 7 | W 7 | NNW 5 | NNW 5 | NNW 5 | — | WNW 6 | — | NNW 3 | N 8 | N 8 | N 8 | N 8 | — | — | — | NW 3 | — | — | — |
| kJ | 60 | 100 | 154 | 180 | 91 | 86 | 10 | 10 | 9 | — | 15 | — | 3 | 165 | 205 | 200 | 195 | — | — | — | 6 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 621 | 595 | 595 | 3 | 0 | 0 | 0 | 75 | 68 | 40 | 46 | 75 | 681 | 681 | 690 | 30 | 30 | 40 | 3 | 30 | 30 | 3 | 0 | 0 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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