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Surf Forecasts:
Aha Rivermouth surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 2 am Thursday 14 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
23.6° C
(Which is 1.5°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 6AM is: 0.7m 10s primary swell from a East-southeast direction and 0.6m 9s secondary swell from a East direction (forecast issued at 02:00am May 14). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 2.5ft (0.8m) | 10s |
| Afternoon (14 May) | 2.5ft (0.8m) | 9s |
| Evening (14 May) | 2.5ft (0.7m) | 9s |
Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Thu morning, min 22°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ENE 9 | ESE 9 | ESE 9 | E 9 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | |
98 | 98 | 98 | 123 | 94 | 113 | 86 | 92 | 64 | 69 | 61 | 56 | 92 | 110 | 127 | 151 | 178 | 176 | 197 | 208 | 220 | 222 | 236 | 229 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | |
High Tide | 4:33AM1.75m | 5:22PM1.74m | 5:08AM1.85m | 6:07PM1.83m | 5:42AM1.93m | 6:51PM1.87m | ||||||||||||||||||
Low Tide | 10:26PM0.60m | 10:59AM0.30m | 11:10PM0.61m | 11:38AM0.11m | 11:50PM0.63m | 12:19PM-0.03m | ||||||||||||||||||
 |  |  | |  | | |  | | | | | |  | | | | | | | | | | | |
 | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 22 | 22 | 23 | 22 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
23 | 23 | 22 | 22 | 23 | 21 | 22 | 21 | 21 | 20 | 19 | 18 | 18 | 19 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 18 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | ESE 9 | E 10 | E 10 | ESE 10 | ESE 10 | ESE 10 | ENE 9 | ESE 10 | ESE 10 | ENE 9 | ESE 10 | E 10 | E 10 |
 kJ | 98 | 98 | 98 | 123 | 94 | 113 | 86 | 65 | 64 | 69 | 61 | 48 | 46 | 47 | 54 | 33 | 36 | 28 | 34 | 20 | 28 | 30 | 50 | 48 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | E 9 | E 9 | SSE 7 | ENE 9 | SSE 7 | SSE 7 | ENE 9 | E 9 | ENE 11 | ENE 11 | S 6 | S 6 | S 6 | S 6 | SE 11 | ESE 10 | ESE 11 | SE 11 | ESE 10 | N 6 | NE 11 | SE 14 |
| kJ | 61 | 59 | 55 | 41 | 5 | 17 | 5 | 5 | 29 | 42 | 23 | 23 | 1 | 1 | 1 | 1 | 5 | 36 | 11 | 5 | 21 | 7 | 5 | 7 |
Swell 3 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | — | SSE 7 | SSE 7 | SSE 7 | S 6 | S 6 | SE 12 | SE 12 | SE 11 | SE 11 | S 6 | SE 11 | SE 15 | SE 15 | N 7 | SE 11 | — | SE 11 |
| kJ | 11 | 11 | 5 | 5 | 9 | 5 | — | 5 | 4 | 4 | 3 | 3 | 6 | 5 | 5 | 5 | 1 | 4 | 8 | 8 | 4 | 4 | — | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 9 | E 3 | ENE 9 | ENE 9 | E 4 | E 4 | E 4 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | — | — | — | — | 41 | 1 | 69 | 92 | 11 | 13 | 30 | 56 | 92 | 110 | 127 | 151 | 178 | 176 | 197 | 208 | 220 | 222 | 236 | 229 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 44 | 44 | 595 | 595 | 595 | 595 | 595 | 595 | 595 | 1402 | 68 | 595 | 595 | 70 | 68 | 40 | 68 | 68 | 595 | 70 | 66 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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