Surf Forecasts:
Yona Bay surf forecast from 20 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 12AM (local time) - 10ft (3.0m), 18s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s period, E swell with 6,699 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 12AM (local time) - 10ft (3.0m), 18s period with E 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 Tuesday (Aug 25) at 12AM. The primary swell is predicted to be 3.0m and 18s period with a secondary swell of 1.6m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Yona Bay in the next 16 days are 3.5m 17s and forecast to arrive on Tuesday (Aug 25) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Friday (Aug 21) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 25th Aug) | 10ft (3.0m) 18s |
| Best Surf | 12AM (Tue 25th Aug) | 10ft (3.0m) 18s |
| Most Powerful | 6AM (Tue 25th Aug) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Yona Bay over the next 16 days.
Short Range ForecastModerate rain (total 11mm), heaviest on Thu afternoon. Warm (max 28°C on Thu afternoon, min 27°C on Thu night). Winds increasing (moderate winds from the ESE on Thu afternoon, strong winds from the SE by Fri afternoon). | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sun night. Warm (max 28°C on Sun afternoon, min 27°C on Sun night). Winds decreasing (fresh winds from the ESE on Sun afternoon, light winds from the NE by Tue night). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
PM | 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) | ENE 8 | ENE 7 | ENE 8 | SSE 8 | ENE 9 | SSE 10 | ENE 9 | ENE 9 | E 18 | E 6 | ENE 13 | E 7 | ESE 17 | E 18 | E 16 | E 15 | E 14 | ENE 13 | ENE 13 | NE 12 |
Wave Graph | ||||||||||||||||||||
28 | 79 | 35 | 0 | 16 | 0 | 16 | 8 | 6 | 217 | 34 | 400 | 0 | 6173 | 6154 | 4780 | 2694 | 2211 | 1100 | 314 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | on |
High Tide | 11:25PM1.71m | 2:08PM1.31m | 00:12AM1.61m | 5:30PM1.40m | 1:52AM1.53m | 5:59PM1.52m | 3:46AM1.55m | 6:20PM1.63m | 4:52AM1.64m | 6:39PM1.73m | 5:37AM1.75m | 6:58PM1.81m | ||||||||
Low Tide | 5:04PM1.11m | 7:00AM0.80m | 5:33PM1.26m | 8:42AM0.81m | 8:14PM1.38m | 10:14AM0.74m | 10:49PM1.33m | 11:09AM0.64m | 11:39PM1.22m | 11:48AM0.53m | 00:10AM1.10m | 12:21PM0.44m | 00:37AM0.97m | |||||||
— | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | |
mm | 2 | 1 | 1 | — | — | — | 2 | 4 | 1 | — | 2 | 1 | 1 | 1 | — | 1 | 2 | — | — | — |
Temp °C | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 29 | 28 | 25 | 24 | 24 | 27 | 27 | 26 | 28 | 28 | 26 | 26 | 28 | 29 | 29 | 30 | 31 | 31 | 30 | 32 |
Swell 1 Height (m) Direction Period (s) | S 9 | SW 9 | SW 8 | SW 10 | ENE 9 | — | E 9 | S 9 | S 10 | S 10 | S 10 | SSE 10 | ESE 17 | E 18 | E 16 | E 15 | E 14 | ENE 13 | ENE 13 | NE 12 |
169 | 3 | 25 | 15 | 16 | — | 6 | 421 | 610 | 919 | 484 | 637 | 2187 | 6173 | 6154 | 4780 | 2694 | 2211 | 1100 | 314 | |
Swell 2 Height (m) Direction Period (s) | SW 9 | ENE 7 | ENE 8 | SW 10 | SW 10 | — | ENE 9 | ENE 9 | ESE 14 | E 17 | ENE 13 | ESE 17 | SSW 10 | SSE 8 | S 9 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | S 10 |
3 | 79 | 35 | 15 | 14 | — | 16 | 8 | 41 | 49 | 16 | 1024 | 59 | 290 | 123 | 157 | 169 | 154 | 209 | 184 | |
Swell 3 Height (m) Direction Period (s) | ENE 8 | ESE 10 | — | — | — | — | — | ESE 13 | E 18 | ESE 13 | ENE 13 | SSW 10 | — | SSW 10 | — | SE 10 | SE 9 | SE 11 | SE 10 | E 13 |
28 | 10 | — | — | — | — | — | 17 | 6 | 35 | 34 | 42 | — | 188 | — | 4 | 3 | 18 | 17 | 31 | |
Wind waves Height (m) Direction Period (s) | ESE 7 | SE 9 | SE 6 | SSE 8 | SSE 10 | SSE 10 | SSE 10 | ESE 6 | E 6 | E 6 | ESE 7 | E 7 | ESE 8 | ENE 7 | — | — | N 6 | — | NNW 5 | NNW 6 |
204 | 554 | 508 | 840 | 1887 | 1941 | 1402 | 113 | 193 | 217 | 461 | 400 | 902 | 225 | — | — | 76 | — | 44 | 47 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 66 | 66 | 595 | 595 | 595 | 595 | 664 | 595 | 595 | 889 | 595 | 690 | 738 | 66 | 60 | 59 | 28 | 33 | 28 | 28 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











