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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Monday 04 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 2AM is: 1.1m 7s primary swell from a North direction and 0.6m 9s secondary swell from a East direction, 0.4m 4s secondary swell from a East-northeast direction (forecast issued at 08:00pm May 04). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 May) | 2.5ft (0.8m) | 7s |
| Afternoon (05 May) | 2ft (0.6m) | 10s |
| Evening (05 May) | 2.5ft (0.7m) | 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 96mm), heaviest during Wed morning. Warm (max 22°C on Thu afternoon, min 16°C on Mon night). Winds decreasing (fresh winds from the NNE on Mon night, calm by Thu afternoon). | ||||||||||||||||||||||||
Mon 4 | Tuesday 5 | Wednesday 6 | Thursday 7 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
N 6 | N 6 | N 7 | N 7 | NNW 7 | NNW 7 | E 9 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | E 7 | ESE 7 | E 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
153 | 136 | 113 | 106 | 84 | 64 | 64 | 71 | 74 | 98 | 68 | 84 | 113 | 91 | 276 | 108 | 225 | 220 | 225 | 190 | 194 | 199 | 199 | 194 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | on | on | cross-on | on | cross-on | glassy | cross-on | cross-on | cross-on | glassy | glassy | glassy | glassy | |
High Tide | 8:31PM1.58m | 7:39AM1.77m | 9:06PM1.52m | 8:05AM1.71m | 9:48PM1.46m | 8:36AM1.62m | ||||||||||||||||||
Low Tide | 1:50AM0.84m | 2:29PM0.18m | 2:17AM0.91m | 3:03PM0.25m | 2:51AM0.98m | |||||||||||||||||||
 |  |  | |  |  | | | | |  | | |  | | |  |  | | |  | | | | |
 | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — |
 | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | 7:01 |
6 | 3 | 8 | 4 | 2 | — | 1 | 3 | 4 | 10 | 13 | 11 | 6 | 23 | 3 | 5 | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 17 | 16 | 16 | 17 | 18 | 18 | 17 | 17 | 19 | 19 | 19 | 20 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 22 |
12 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 17 | 17 | 17 | 19 | 18 | 20 | 21 | 22 | 21 | 21 | 21 | 22 | 22 | 23 | 24 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | N 7 | N 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 10 | ESE 7 | NNW 6 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
 kJ | 71 | 71 | 113 | 106 | 84 | 63 | 47 | 34 | 74 | 98 | 68 | 72 | 71 | 91 | 7 | 108 | 225 | 220 | 225 | 190 | 194 | 199 | 199 | 194 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 7 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 10 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | ESE 9 | NW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | N 6 | N 6 | N 6 |
| kJ | 23 | 15 | 64 | 64 | 64 | 64 | 64 | 71 | 23 | 22 | 12 | 8 | 8 | 69 | 2 | 7 | 8 | 4 | 4 | 4 | 4 | 3 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 12 | SW 6 | W 7 | W 7 | W 6 | W 6 | W 6 | W 6 | NNW 6 | NNW 6 | — | N 5 | — | NNW 6 | — | — | N 8 | N 8 | N 8 | N 8 | N 7 | — | — | — |
| kJ | 3 | 1 | 8 | 3 | 3 | 1 | 1 | 1 | 4 | 8 | — | 1 | — | 7 | — | — | 1 | 1 | 1 | 1 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | N 6 | N 6 | NE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 5 | E 6 | E 7 | NE 4 | E 9 | E 6 | — | — | — | — | — | — | — | — |
| kJ | 153 | 136 | 10 | 8 | 13 | 20 | 19 | 15 | 18 | 24 | 37 | 84 | 113 | 13 | 276 | 75 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 605 | 596 | 40 | 66 | 68 | 66 | 595 | 595 | 595 | 595 | 595 | 66 | 621 | 595 | 12 | 12 | 0 | 30 | 30 | 40 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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