Surf Forecasts:
How big are the waves at Yona Bay today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 2.5ft (0.7m), 10s period with ENE swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 2ft (0.6m), 10s period with ENE swell.
- Evening surf: Evening surf (17 Aug, local time) - 2ft (0.6m), 10s period with ENE swell.
The current surf forecast for Yona Bay at 3AM is: 0.7m 10s primary swell from a East-northeast direction (forecast issued at 08:00pm August 16). An open ocean swell of 0.4m 7s is not directed at the surf break, a second open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 2.5ft (0.7m) | 10s |
| Afternoon (17 Aug) | 2ft (0.6m) | 10s |
| Evening (17 Aug) | 2ft (0.6m) | 10s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 21mm), heaviest during Wed morning. Warm (max 28°C on Sun night, min 27°C on Sun night). Winds increasing (light winds from the ESE on Sun night, strong winds from the E by Tue night). | ||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | ||||||||||||||||
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) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 6 | E 6 | E 6 | E 6 | E 7 |
Wave Graph  | ||||||||||||||||||
 kJ | 77 | 77 | 78 | 106 | 106 | 104 | 104 | 77 | 78 | 78 | 77 | 55 | 74 | 0 | 0 | 0 | 173 | 321 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | 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 | 9:25PM2.00m | 9:39AM1.90m | 9:53PM1.96m | 10:20AM1.75m | ||||||||||||||
Low Tide | 3:15PM0.45m | 3:36AM0.54m | 3:44PM0.61m | 4:15AM0.58m | 4:12PM0.78m | |||||||||||||
 |  | | |  | |  | | | | | |  | | | | |  | |
 | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | 7:04 | — | — | — | — | — | — | — | 7:02 | — | — | — | — | — | — | — | 7:01 | — |
mm | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 29 | 29 | 28 | 29 | 29 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 27 | 28 | 28 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 7 | S 7 | S 7 | S 7 | S 7 |
| kJ | 77 | 77 | 78 | 106 | 106 | 104 | 104 | 77 | 78 | 78 | 77 | 55 | 74 | 8 | 15 | 16 | 16 | 9 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 7 | S 7 | SW 8 | SW 8 | S 7 | SW 9 | SW 8 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 9 |
| kJ | 28 | 18 | 17 | 16 | 25 | 18 | 15 | 19 | 18 | 19 | 20 | 19 | 18 | 18 | 11 | 11 | 11 | 12 |
Swell 3 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SW 9 | S 7 | ESE 11 | SW 9 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 11 |
| kJ | 21 | 16 | 17 | 19 | 16 | 11 | 19 | 9 | 9 | 10 | 10 | 9 | 9 | 11 | 11 | 10 | 10 | 5 |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 5 | SE 4 | SE 5 | SE 5 | SE 5 | ESE 4 | ESE 5 | ESE 5 | ESE 5 | ESE 6 | E 6 | ESE 6 | E 6 | E 6 | E 6 | E 6 | E 7 |
| kJ | 15 | 14 | 20 | 22 | 18 | 24 | 11 | 25 | 25 | 40 | 94 | 82 | 89 | 102 | 115 | 134 | 173 | 321 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 66 | 66 | 0 | 0 | 0 | 64 | 64 | 66 | 66 | 66 | 66 | 66 | 66 | 65 | 595 | 1386 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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