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.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 4.5ft (1.3m), 6s period with E swell.
- Evening surf: Evening surf (18 Aug, local time) - 4.5ft (1.4m), 6s period with E swell.
The current surf forecast for Yona Bay at 7AM is: 0.5m 10s primary swell from a East-northeast direction (forecast issued at 02:00am August 18). An open ocean swell of 0.4m 8s 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) | 4.5ft (1.3m) | 6s |
| Evening (18 Aug) | 4.5ft (1.4m) | 6s |
Table - waves today at Yona Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 29mm), heaviest during Thu night. Warm (max 28°C on Tue morning, min 26°C on Thu night). Mainly strong winds. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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 | 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 | E 6 | 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 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 77 | 75 | 54 | 72 | 0 | 123 | 0 | 144 | 153 | 181 | 204 | 232 | 214 | 236 | 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 | 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 | cross-off | off | off | off | off | off | off | off | off |
High Tide | 9:53PM1.96m | 10:20AM1.75m | 10:22PM1.89m | 11:05AM1.58m | 10:52PM1.81m | 12:05PM1.41m | ||||||||||||||||||
Low Tide | 4:15AM0.58m | 4:12PM0.78m | 4:58AM0.65m | 4:38PM0.95m | 5:49AM0.73m | 5:04PM1.11m | ||||||||||||||||||
 | |  |  | | |  |  | | |  |  | | | | | | | | | | | | | |
 | — | 5:58 | — | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — |
 | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 3 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
Temp °C | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 28 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 28 | 28 | 27 | 29 | 29 | 29 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 25 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SW 8 | S 7 | S 7 | S 7 | SW 8 | SW 8 | SW 8 | SW 8 | ENE 9 | S 8 | S 8 | S 8 | S 8 | S 10 | SSW 10 | S 9 | S 10 | SSW 8 | SW 9 | SW 9 |
| kJ | 77 | 75 | 54 | 72 | 11 | 9 | 9 | 9 | 11 | 11 | 10 | 9 | 26 | 11 | 10 | 12 | 23 | 17 | 31 | 38 | 49 | 7 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | 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 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 8 | SW 9 | SW 9 | SW 9 |
| kJ | 20 | 19 | 18 | 18 | 9 | 11 | 11 | 11 | 9 | 4 | 4 | 5 | 5 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 20 | 3 | 3 | 12 |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | S 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | ESE 10 | — | — | — | — | — | SW 9 | SW 9 | SSW 8 | SW 9 | — |
| kJ | 10 | 10 | 9 | 9 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 6 | 10 | — | — | — | — | — | 12 | 3 | 14 | 12 | — |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 6 | ESE 6 | ESE 6 | E 6 | 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 8 |
| kJ | 69 | 83 | 104 | 89 | 120 | 123 | 138 | 144 | 153 | 181 | 204 | 232 | 214 | 236 | 293 | 365 | 375 | 501 | 532 | 488 | 425 | 481 | 557 | 543 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 66 | 66 | 66 | 66 | 59 | 60 | 595 | 595 | 63 | 60 | 595 | 595 | 1502 | 856 | 595 | 595 | 66 | 595 | 595 | 595 | 595 | 66 | 595 | 595 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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