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Surf Forecasts:
Yona Bay surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Monday 18 May 2026 JSTForecast update in hr min s Forecast update imminent
Yona Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Yona Bay sea temperature is
23.3° C
(Which is 2.1°C colder than average for this time of year)How big are the waves at Yona Bay today?
The current surf forecast for Yona Bay at 2AM is: 2.1m 8s primary swell from a East direction (forecast issued at 08:00pm May 18). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 6ft (1.8m) | 8s |
| Afternoon (19 May) | 5ft (1.6m) | 8s |
| Evening (19 May) | 5ft (1.5m) | 8s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 26°C on Thu afternoon, min 22°C on Mon night). Winds decreasing (fresh winds from the ENE on Mon night, light winds from the SSE by Tue afternoon). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | NE 8 | SW 3 | SW 3 | SW 3 | WSW 3 | WSW 3 | ESE 10 | ESE 10 | SW 4 | SW 4 | SW 4 | |
448 | 499 | 610 | 567 | 499 | 459 | 401 | 356 | 309 | 317 | 0 | 0 | 0 | 17 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 8 | 12 | 22 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | |
High Tide | 8:44PM1.81m | 7:55AM1.95m | 9:32PM1.74m | 8:37AM1.88m | 10:24PM1.67m | 9:25AM1.78m | ||||||||||||||||||
Low Tide | 2:12AM0.82m | 2:49PM-0.05m | 2:56AM0.88m | 3:37PM0.05m | 3:47AM0.94m | |||||||||||||||||||
 |  |  |  |  |  | | | |  | | | | | | | | | | | | | | | |
 | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — |
 | 7:07 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | — | — | 7:09 |
1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 22 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 23 | 23 | 23 | 23 | 24 | 25 | 26 |
20 | 19 | 20 | 23 | 23 | 26 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
 kJ | — | — | — | — | 499 | 459 | 401 | 356 | 309 | 317 | 284 | 284 | 256 | 221 | 254 | 230 | 235 | 210 | 210 | 201 | 166 | 166 | 166 | 166 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 8 | — | — | — | — | — | — | — | E 12 | — | E 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 17 | — | — | — | — | — | — | — | 3 | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | — | — | — | — | — | — | — | — | — | — | SW 3 | SW 3 | SW 3 | WSW 3 | WSW 3 | SSW 3 | SSW 4 | SW 4 | SW 4 | SW 4 |
| kJ | 448 | 499 | 610 | 567 | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 2 | 2 | 4 | 8 | 8 | 12 | 22 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 33 | 595 | 65 | 33 | 33 | 33 | 33 | 0 | 0 | 0 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 28 | 12 | 12 | 12 | 12 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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