Surf Forecasts:
How big are the waves at Yona Bay today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 2ft (0.6m), 10s period with ENE swell.
- Evening surf: Evening surf (18 Aug, local time) - 5ft (1.5m), 6s period with E swell.
The current surf forecast for Yona Bay at 4AM is: 0.5m 10s primary swell from a East-northeast direction (forecast issued at 08:00pm August 17). An open ocean swell of 0.4m 9s is not directed at the surf break, a second open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2ft (0.6m) | 10s |
| Afternoon (18 Aug) | - | - |
| Evening (18 Aug) | 5ft (1.5m) | 6s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 33mm), heaviest during Thu morning. Warm (max 28°C on Tue morning, min 26°C on Thu morning). Mainly strong winds. | ||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||
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 | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | ESE 7 | ESE 8 |
Wave Graph  | ||||||||||||||||||
 kJ | 78 | 78 | 77 | 75 | 54 | 72 | 0 | 0 | 0 | 165 | 206 | 262 | 279 | 324 | 381 | 358 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-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 | cross-off |
High Tide | 9:53PM1.96m | 10:20AM1.75m | 10:22PM1.89m | 11:05AM1.58m | ||||||||||||||
Low Tide | 3:44PM0.61m | 4:15AM0.58m | 4:12PM0.78m | 4:58AM0.65m | 4:38PM0.95m | |||||||||||||
 |  | | |  | |  | | |  | | |  |  | | | | | |
 | — | — | — | 5:58 | — | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — |
 | 7:02 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 2 | 3 | 2 |
Temp °C | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 30 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 27 | 29 | 28 | 29 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SW 8 | S 7 | S 7 | S 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | S 8 | S 8 | S 8 |
| kJ | 78 | 78 | 77 | 75 | 54 | 72 | 11 | 16 | 9 | 9 | 11 | 11 | 10 | 10 | 3 | 5 | 10 | 12 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | S 7 | SW 8 | SW 8 | SW 8 | S 7 | S 7 | S 7 | S 8 | S 8 | SW 8 | SW 8 | SW 8 |
| kJ | 18 | 19 | 20 | 19 | 18 | 18 | 9 | 11 | 11 | 11 | 9 | 4 | 4 | 5 | 5 | 3 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | — | — | — | — | — |
| kJ | 9 | 10 | 10 | 9 | 9 | 9 | 11 | 10 | 10 | 10 | 10 | 10 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 5 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | ESE 7 | ESE 8 |
| kJ | 31 | 44 | 81 | 101 | 108 | 89 | 112 | 115 | 139 | 165 | 206 | 262 | 279 | 324 | 381 | 358 | 414 | 495 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 66 | 66 | 66 | 0 | 66 | 60 | 59 | 64 | 65 | 595 | 65 | 63 | 595 | 674 | 856 | 856 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Yona Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest