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Surf Forecasts:
Yona Bay surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 pm Friday 29 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
24.8° C
(Which is 1.0°C colder than average for this time of year)How big are the waves at Yona Bay today (30 May):
- Morning surf: Morning surf (30 May, local time) - 2ft (0.6m), 10s period with E swell.
- Afternoon surf: Afternoon surf (30 May, local time) - 1.5ft (0.5m), 10s period with E swell.
- Evening surf: Evening surf (30 May, local time) - 1.5ft (0.5m), 10s period with E swell.
The current surf forecast for Yona Bay at 4AM is: 0.6m 10s primary swell from a East direction and 0.7m 5s secondary swell from a North direction, 0.5m 5s secondary swell from a North direction (forecast issued at 08:00pm May 29). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 May) | 2ft (0.6m) | 10s |
| Afternoon (30 May) | 1.5ft (0.5m) | 10s |
| Evening (30 May) | 1.5ft (0.5m) | 10s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 25mm), heaviest during Mon morning. Warm (max 26°C on Mon afternoon, min 23°C on Fri night). Winds increasing (light winds from the NNE on Sat morning, gales from the ESE by Mon afternoon). | ||||||||||||||||||||||||
Fri 29 | Saturday 30 | Sunday 31 | Monday 1 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
NNW 5 | NNW 5 | N 5 | E 10 | E 10 | E 10 | N 6 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 11 | ENE 11 | N 5 | SSE 15 | E 7 | E 8 | E 8 | E 9 | ENE 9 | SE 14 | |
30 | 36 | 27 | 67 | 67 | 67 | 38 | 47 | 48 | 44 | 69 | 71 | 76 | 53 | 79 | 12 | 9 | 0 | 539 | 1014 | 1228 | 1597 | 1635 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 6:37PM1.62m | 5:46AM1.79m | 7:12PM1.63m | 6:14AM1.81m | 7:45PM1.64m | 6:41AM1.82m | ||||||||||||||||||
Low Tide | 00:00AM0.90m | 12:36PM0.24m | 00:31AM0.93m | 1:06PM0.20m | 1:01AM0.96m | 1:36PM0.19m | ||||||||||||||||||
 |  | | |  | | | | | | |  | | | |  | | | |  |  |  |  | | |
 | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — |
 | 7:14 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | 7:15 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 14 | 5 | 2 | |
Temp °C | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 |
24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 24 | 23 | 23 | 23 | 24 | 24 | 21 | 21 | 21 | 21 | 22 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | N 5 | E 10 | N 6 | N 6 | N 6 | SE 14 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SSE 14 | SSE 15 | SSE 14 | SSE 15 | SSE 16 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | — |
 kJ | 38 | 56 | 55 | 28 | 67 | 33 | 38 | 28 | 357 | 552 | 723 | 657 | 718 | 718 | 2151 | 3227 | 3714 | 4702 | 7954 | 9643 | 10236 | 11346 | 12246 | — |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 8 | E 10 | NE 11 | E 10 | E 10 | E 10 | N 6 | E 10 | E 10 | E 10 | E 10 | SSE 16 | E 11 | ENE 11 | N 5 | — | — | — | — | — | — | — |
| kJ | 16 | 15 | 7 | 67 | 4 | 67 | 46 | 47 | 27 | 44 | 69 | 71 | 76 | 412 | 79 | 12 | 9 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 6 | SW 6 | ENE 10 | NE 11 | SW 6 | SSE 9 | SE 9 | SE 14 | E 10 | ENE 10 | ENE 12 | ENE 12 | NNW 6 | E 10 | — | — | — | — | — | — | — | — | — | — |
| kJ | 4 | 1 | 10 | 4 | 1 | 8 | 13 | 99 | 48 | 11 | 13 | 13 | 10 | 53 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | N 5 | N 5 | N 6 | — | NE 3 | — | NNE 6 | N 6 | N 6 | NNE 6 | ENE 3 | NE 4 | NE 4 | ENE 5 | ENE 5 | ENE 6 | E 7 | E 8 | E 8 | E 9 | ENE 9 | SE 14 |
| kJ | 30 | 36 | 27 | 13 | 30 | — | 1 | — | 12 | 25 | 24 | 25 | 7 | 21 | 55 | 107 | 81 | 266 | 539 | 1014 | 1228 | 1597 | 1635 | 18768 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 605 | 597 | 597 | 74 | 622 | 595 | 595 | 64 | 64 | 64 | 54 | 64 | 64 | 64 | 595 | 595 | 925 | 738 | 595 | 664 | 595 | 595 | 794 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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