Surf Forecasts:
How big are the waves at Yona Bay today (18 Aug):
- Evening surf: Evening surf (18 Aug, local time) - 5ft (1.6m), 6s period with E swell.
The current surf forecast for Yona Bay at 6PM is: 1.5m 6s primary swell from a East direction (forecast issued at 02:00pm August 18). An open ocean swell of 0.3m 7s is not directed at the surf break, a second open ocean swell of 0.3m 8s 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) | - | - |
| Afternoon (18 Aug) | - | - |
| Evening (18 Aug) | 5ft (1.6m) | 6s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 75mm), heaviest during Thu night. Warm (max 28°C on Tue afternoon, min 26°C on Thu afternoon). Winds decreasing (near gales from the ESE on Thu afternoon, moderate winds from the SE by Fri morning). | ||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||
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 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 9 | SE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 164 | 199 | 213 | 233 | 240 | 328 | 306 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | off | off | off | off | cross-off | off | off |
High Tide | 10:20AM1.75m | 10:22PM1.89m | 11:05AM1.58m | 10:52PM1.81m | 12:05PM1.41m | |||||||||||||||
Low Tide | 4:12PM0.78m | 4:58AM0.65m | 4:38PM0.95m | 5:49AM0.73m | 5:04PM1.11m | |||||||||||||||
 |  | |  |  |  | |  | | | | | | | | | | |  | | |
 | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — |
 | — | — | 7:01 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — |
mm | — | — | — | — | 1 | — | 1 | 1 | 2 | 2 | 1 | — | 1 | 2 | — | — | 1 | 3 | 6 | 2 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | 26 | 27 |
Feels °C | 29 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 28 | 29 | 28 | 28 | 27 | 27 | 28 | 27 | 28 | 23 | 26 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 8 | S 7 | S 7 | S 7 | SW 8 | SW 8 | SW 8 | SW 8 | S 8 | S 8 | S 8 | S 8 | SW 8 | SW 8 | S 11 | S 10 | SW 9 | SW 9 | SW 9 | SW 9 |
| kJ | 11 | 9 | 9 | 9 | 11 | 11 | 10 | 10 | 5 | 5 | 11 | 11 | 3 | 3 | 20 | 71 | 3 | 3 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | S 7 | SW 8 | SW 8 | SW 8 | S 7 | S 7 | S 7 | S 8 | SSW 8 | SW 8 | SW 8 | SW 9 | — | S 11 | SW 8 | SW 9 | — | — | — | — |
| kJ | 9 | 11 | 11 | 11 | 4 | 4 | 4 | 5 | 7 | 3 | 3 | 3 | — | 2 | 3 | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 11 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 11 | 10 | 10 | 10 | 11 | 10 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 9 | SE 9 |
| kJ | 119 | 134 | 164 | 199 | 213 | 233 | 240 | 328 | 306 | 362 | 392 | 498 | 557 | 674 | 785 | 700 | 865 | 1341 | 1914 | 1255 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 60 | 957 | 595 | 595 | 63 | 63 | 63 | 595 | 856 | 856 | 856 | 595 | 595 | 595 | 595 | 595 | 908 | 889 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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