Surf Forecasts:
Yona Bay surf forecast from 25 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 12AM (local time) - 25ft (7.5m), 13s period, NNE swell with onshore winds.
- Most powerful swell: Wednesday 2 Sep, 12AM (local time) - 25ft (7.5m), 13s period, NNE swell with 18,356 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 3PM (local time) - 7ft (2.2m), 10s period with W swell.
Best Forecast Surf Conditions for Yona Bay this week:
The surf forecast for Yona Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 3PM. The primary swell is predicted to be 2.2m and 10s period with a secondary swell of 0.7m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Yona Bay in the next 16 days are 7.5m 13s and forecast to arrive on Wednesday (Sep 02) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 8s period and expected on Wednesday (Aug 26) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 27th Aug) | 7ft (2.2m) 10s |
| Best Surf | 12AM (Wed 2nd Sep) | 25ft (7.5m) 13s |
| Most Powerful | 12AM (Wed 2nd Sep) | 25ft (7.5m) 13s |
Table - best surf conditions forecast for Yona Bay over the next 16 days.
Short Range ForecastHeavy rain (total 26mm), heaviest during Tue night. Warm (max 29°C on Wed afternoon, min 27°C on Tue night). Winds decreasing (stormy winds from the NW on Tue night, moderate winds from the S by Thu morning). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Mon morning. Warm (max 28°C on Fri night, min 27°C on Sat night). Winds increasing (moderate winds from the E on Sat night, strong winds from the NE by Mon morning). | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | N 10 | NW 9 | WNW 9 | W 9 | E 13 | W 10 | W 11 | W 11 | W 10 | W 10 | E 13 | E 13 | E 12 | E 12 | ENE 12 | ENE 11 | ENE 11 | NE 5 | E 11 |
Wave Graph | |||||||||||||||||||
2363 | 468 | 488 | 486 | 85 | 1066 | 757 | 372 | 212 | 96 | 89 | 121 | 108 | 72 | 46 | 43 | 40 | 98 | 1493 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on |
High Tide | 5:37AM1.75m | 6:58PM1.81m | 6:16AM1.86m | 7:19PM1.88m | 6:51AM1.95m | 7:40PM1.93m | 7:27AM2.02m | 8:03PM1.98m | 8:03AM2.05m | 8:28PM2.00m | 8:41AM2.03m | 8:55PM2.00m | |||||||
Low Tide | 00:10AM1.10m | 12:21PM0.44m | 00:37AM0.97m | 12:51PM0.38m | 1:03AM0.83m | 1:20PM0.35m | 1:31AM0.70m | 1:49PM0.36m | 2:01AM0.59m | 2:19PM0.41m | 2:34AM0.50m | 2:50PM0.51m | |||||||
— | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
6:54 | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | |
mm | 13 | 8 | 2 | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | 2 | 3 | 4 | 6 |
Temp °C | 27 | 28 | 29 | 28 | 29 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 16 | 24 | 26 | 27 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 28 | 28 | 28 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | N 10 | NW 9 | WNW 9 | W 9 | WSW 9 | W 10 | W 11 | W 11 | W 10 | W 10 | SW 10 | SW 9 | SSW 9 | SSW 9 | ESE 8 | S 8 | ESE 10 | ESE 10 | E 11 |
2363 | 468 | 488 | 486 | 641 | 1066 | 757 | 372 | 212 | 96 | 57 | 68 | 65 | 58 | 157 | 37 | 754 | 794 | 1493 | |
Swell 2 Height (m) Direction Period (s) | ENE 12 | E 10 | E 9 | ESE 8 | ESE 7 | E 7 | ENE 12 | SW 9 | SW 8 | S 7 | E 13 | E 13 | E 12 | E 12 | SSW 8 | ENE 11 | ENE 11 | ENE 11 | SW 10 |
1127 | 242 | 127 | 101 | 71 | 51 | 47 | 39 | 35 | 38 | 89 | 121 | 108 | 72 | 55 | 43 | 40 | 41 | 24 | |
Swell 3 Height (m) Direction Period (s) | E 12 | E 15 | ENE 14 | E 13 | E 13 | SE 8 | SW 9 | ENE 12 | ENE 12 | SW 9 | W 9 | S 8 | SW 9 | WSW 9 | ENE 12 | SW 9 | SSW 10 | SSW 9 | SW 10 |
279 | 38 | 37 | 89 | 85 | 34 | 27 | 46 | 46 | 43 | 41 | 18 | 29 | 7 | 46 | 13 | 18 | 15 | 16 | |
Wind waves Height (m) Direction Period (s) | WNW 8 | SW 8 | SSW 8 | S 6 | S 8 | S 8 | SE 7 | SE 7 | SE 6 | SE 6 | SE 7 | SE 6 | ESE 6 | ESE 7 | — | ESE 10 | N 4 | NE 5 | N 6 |
2246 | 1446 | 914 | 154 | 12 | 19 | 215 | 233 | 200 | 162 | 176 | 108 | 85 | 75 | — | 512 | 9 | 98 | 85 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 664 | 664 | 655 | 664 | 655 | 0 | 80 | 628 | 66 | 35 | 0 | 59 | 64 | 64 | 64 | 595 | 595 | 595 | 595 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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Information about the Yona Bay Surf forecast
The above surf forecast table for Yona Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Yona Bay can be found by selecting the local surf guide option on the grey menu. Our Yona Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Yona Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Yona Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Yona Bay is 24 km (15 miles) from the city of Okinawa. If you plan a holiday in Okinawa, look for hotels and other accommodation in Okinawa. Okinawa has rooms for a wide range of budgets as well as car hire and transport links.











