Surf Forecasts:
How big are the waves at Yona Bay today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 8ft (2.5m), 14s period with E swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 10ft (3.0m), 14s period with ENE swell.
- Evening surf: Evening surf (20 Sep, local time) - 8ft (2.5m), 14s period with ENE swell.
The current surf forecast for Yona Bay at 4AM is: 2.5m 14s primary swell from a East direction and 0.9m 7s secondary swell from a North direction (forecast issued at 08:00pm September 19). An open ocean swell of 0.3m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 8ft (2.5m) | 14s |
| Afternoon (20 Sep) | 10ft (3.0m) | 14s |
| Evening (20 Sep) | 8ft (2.5m) | 14s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Warm (max 28°C on Sat night, min 26°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||
Sat 19 | Sunday 20 | Monday 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 | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | E 17 | E 16 | E 15 | E 14 | E 14 | E 14 | E 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 |
Wave Graph  | ||||||||||||||||||
 kJ | 566 | 2164 | 2424 | 2346 | 2437 | 2904 | 2816 | 2734 | 2857 | 2629 | 2338 | 1915 | 1501 | 1106 | 890 | 655 | 491 | 421 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 |
High Tide | 10:56PM1.55m | 4:50PM1.40m | 00:35AM1.43m | 5:12PM1.52m | ||||||||||||||
Low Tide | 4:35PM1.27m | 7:30AM0.81m | 8:06PM1.37m | 9:21AM0.78m | ||||||||||||||
 |  | |  | | |  |  | | | | | | |  | | | | |
 | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — |
 | 6:28 | — | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:24 | — |
mm | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 27 |
Feels °C | 29 | 30 | 30 | 29 | 29 | 29 | 29 | 30 | 29 | 27 | 27 | 27 | 25 | 24 | 25 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 16 | E 15 | E 14 | E 14 | E 14 | E 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 |
| kJ | 417 | 2164 | 2424 | 2346 | 2437 | 2904 | 2816 | 2734 | 2857 | 2629 | 2338 | 1915 | 1501 | 1106 | 890 | 655 | 491 | 421 |
Swell 2 Height (m) Direction Period (s) | E 17 | NE 10 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 |
| kJ | 566 | 79 | 22 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | ENE 10 | S 8 | S 8 | — | — | — | — | S 8 | — | — | — | — | — | — | SE 10 | SE 10 | SE 10 | SE 10 |
| kJ | 138 | 22 | 22 | — | — | — | — | 12 | — | — | — | — | — | — | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | N 9 | N 8 | N 8 | N 7 | N 7 | N 7 | N 7 | N 7 | N 7 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
| kJ | 106 | 92 | 78 | 62 | 86 | 86 | 79 | 64 | 74 | 133 | 161 | 172 | 272 | 333 | 343 | 309 | 302 | 260 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 595 | 28 | 28 | 28 | 28 | 595 | 595 | 595 | 595 | 597 | 597 | 595 | 595 | 597 | 597 | 692 | 641 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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