Surf Forecasts:
How big are the waves at Yona Bay today (20 Sep):
- 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 9PM is: 2.5m 14s primary swell from a East-northeast direction and 1.1m 7s secondary swell from a North direction (forecast issued at 02:00pm September 20). 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) | - | - |
| 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 ForecastSome drizzle, heaviest during Sun afternoon. Warm (max 28°C on Sun afternoon, min 26°C on Sun night). Winds decreasing (fresh winds from the N on Sun night, light winds from the W by Tue night). | ||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | E 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | NE 11 | ENE 11 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2816 | 2774 | 2815 | 2668 | 2338 | 1766 | 1354 | 970 | 737 | 550 | 483 | 414 | 298 | 265 | 223 | 195 | 195 | 160 | 161 | 157 |
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 | on | cross-on | cross-on | cross-on |
High Tide | 4:50PM1.40m | 00:35AM1.43m | 5:12PM1.52m | 3:22AM1.45m | 5:32PM1.62m | |||||||||||||||
Low Tide | 8:06PM1.37m | 9:21AM0.78m | 10:36PM1.26m | 10:28AM0.69m | ||||||||||||||||
 |  | |  | | |  |  | | | | |  | | | | | | | | |
 | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — |
 | — | — | 6:27 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:23 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 27 | 26 | 27 | 26 | 26 |
Feels °C | 28 | 29 | 27 | 27 | 26 | 25 | 24 | 25 | 24 | 25 | 24 | 26 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | E 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | NE 11 | ENE 11 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
| kJ | 2816 | 2774 | 2815 | 2668 | 2338 | 1766 | 1354 | 970 | 737 | 550 | 483 | 414 | 298 | 265 | 223 | 195 | 195 | 160 | 161 | 157 |
Swell 2 Height (m) Direction Period (s) | 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 | ENE 11 | ENE 11 | NE 11 | NE 11 | ENE 10 | NE 10 |
| kJ | 12 | 12 | 12 | 12 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 219 | 157 | 123 | 117 | 71 | 50 |
Swell 3 Height (m) Direction Period (s) | — | ESE 18 | — | — | — | — | — | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 8 | S 8 | S 8 | S 8 | S 7 | E 12 |
| kJ | — | 34 | — | — | — | — | — | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 10 |
Wind waves Height (m) Direction Period (s) | 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 | N 8 | N 8 | — | — | — | — | — |
| kJ | 92 | 111 | 92 | 110 | 212 | 294 | 333 | 341 | 302 | 264 | 260 | 219 | 219 | 219 | 65 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 595 | 595 | 595 | 595 | 597 | 595 | 597 | 597 | 595 | 693 | 681 | 28 | 28 | 28 | 28 | 28 | 41 | 920 | 738 | 33 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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