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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 am Thursday 28 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
24.6° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Aha Rivermouth today (28 May):
- Morning surf: Morning surf (28 May, local time) - 1.5ft (0.4m), 11s period with ENE swell.
- Afternoon surf: Afternoon surf (28 May, local time) - 1.5ft (0.4m), 10s period with ENE swell.
- Evening surf: Evening surf (28 May, local time) - 1.5ft (0.4m), 10s period with ENE swell.
The current surf forecast for Aha Rivermouth at 7AM is: 0.5m 11s primary swell from a East-northeast direction (forecast issued at 02:00am May 28). An open ocean swell of 0.7m 8s is not directed at the surf break, a second open ocean swell of 0.6m 6s is not directed at the surf break, a second open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 May) | 1.5ft (0.4m) | 11s |
| Afternoon (28 May) | 1.5ft (0.4m) | 10s |
| Evening (28 May) | 1.5ft (0.4m) | 10s |
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 2mm), mostly falling on Thu morning. Warm (max 25°C on Thu morning, min 23°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 28 | Friday 29 | Saturday 30 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 10 | E 10 | E 10 | E 10 | SE 13 | SE 12 | |
78 | 65 | 64 | 44 | 39 | 38 | 39 | 38 | 40 | 31 | 32 | 38 | 32 | 38 | 38 | 38 | 55 | 67 | 67 | 68 | 46 | 49 | 61 | 175 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | |
High Tide | 4:25AM1.74m | 5:35PM1.59m | 4:58AM1.78m | 6:15PM1.63m | 5:27AM1.81m | 6:51PM1.65m | ||||||||||||||||||
Low Tide | 10:23PM0.81m | 11:07AM0.38m | 11:04PM0.85m | 11:43AM0.29m | 11:39PM0.89m | 12:15PM0.23m | ||||||||||||||||||
 |  |  |  |  |  | |  |  | | | |  | | |  | | | | | | | | | |
 | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:13 | — | — | — | — | — | — | — | 7:14 | — | — | — | — | — | — | — | 7:14 | — |
6 | 2 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 |
28 | 29 | 29 | 28 | 28 | 27 | 28 | 29 | 27 | 26 | 25 | 25 | 24 | 24 | 23 | 22 | 23 | 23 | 23 | 23 | 23 | 25 | 24 | 22 | |
Swell 1 Height (m) Direction Period (s) | W 8 | SSW 5 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | NNW 6 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | NNW 6 | NNW 6 | E 10 | N 6 | N 6 | N 6 | E 10 | SE 12 |
 kJ | 80 | 21 | 55 | 55 | 61 | 63 | 43 | 28 | 26 | 10 | 32 | 38 | 32 | 38 | 38 | 38 | 31 | 33 | 67 | 34 | 36 | 36 | 51 | 175 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | SSW 5 | SSW 6 | SSW 5 | SSW 5 | S 5 | SSW 5 | ENE 10 | ESE 10 | NE 10 | NE 10 | NE 10 | ENE 9 | ENE 9 | ENE 9 | ESE 10 | E 10 | NE 11 | E 10 | E 10 | E 10 | SE 13 | SE 16 |
| kJ | 78 | 65 | 21 | 31 | 15 | 15 | 13 | 8 | 40 | 31 | 24 | 24 | 23 | 17 | 16 | 15 | 55 | 67 | 4 | 68 | 46 | 49 | 61 | 155 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ESE 10 | W 7 | W 7 | W 7 | W 6 | SSW 6 | SSW 6 | SSW 6 | ENE 8 | SW 6 | SW 6 | SSE 9 | SE 9 | SE 9 | SE 9 | E 10 |
| kJ | 32 | 32 | 64 | 44 | 39 | 38 | 39 | 38 | 32 | 15 | 15 | 8 | 7 | 4 | 4 | 4 | 7 | 1 | 1 | 8 | 13 | 21 | 28 | 46 |
Wind waves Height (m) Direction Period (s) | S 5 | W 8 | SW 6 | — | — | NNW 4 | — | — | — | — | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 5 | NNW 5 | N 6 | N 6 | NNW 6 | NE 3 | NE 3 | N 6 | N 6 | N 6 |
| kJ | 24 | 80 | 78 | — | — | 2 | — | — | — | — | 18 | 18 | 24 | 23 | 30 | 30 | 16 | 16 | 34 | 2 | 2 | 18 | 26 | 24 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 3 | 3 | 0 | 12 | 75 | 75 | 12 | 75 | 75 | 75 | 596 | 75 | 75 | 75 | 605 | 595 | 595 | 596 | 75 | 595 | 761 | 595 | 595 | 68 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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