
Surf Forecasts:
Yona Bay surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 6AM (local time) - 4.5ft (1.3m), 14s period, E swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 6AM (local time) - 4.5ft (1.3m), 14s period, E swell with 665 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 6AM (local time) - 4.5ft (1.3m), 14s 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 Monday (Aug 10) at 6AM. The primary swell is predicted to be 1.3m and 14s period. 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 1.3m 14s and forecast to arrive on Monday (Aug 10) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Sunday (Aug 09) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 10th Aug) | 4.5ft (1.3m) 14s |
| Best Surf | 6AM (Mon 10th Aug) | 4.5ft (1.3m) 14s |
| Most Powerful | 6AM (Mon 10th Aug) | 4.5ft (1.3m) 14s |
Table - best surf conditions forecast for Yona Bay over the next 16 days.
Short Range ForecastModerate rain (total 18mm), heaviest on Tue morning. Warm (max 30°C on Mon afternoon, min 28°C on Sun morning). Winds decreasing (strong winds from the SSE on Sun morning, light winds from the S by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 30mm), heaviest during Wed afternoon. Warm (max 29°C on Wed afternoon, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
AM | 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) | E 9 | E 9 | E 14 | E 13 | E 13 | E 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | W 7 | ENE 9 | ENE 11 | ENE 11 | ENE 10 |
Wave Graph | |||||||||||||||||||||
212 | 165 | 306 | 609 | 427 | 314 | 240 | 254 | 193 | 135 | 130 | 77 | 86 | 86 | 56 | 38 | 26 | 28 | 65 | 66 | 116 | |
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 | off | off | off | off | off | off | off | cross-off | off | cross-off |
High Tide | 5:41PM1.66m | 4:18AM1.81m | 6:24PM1.78m | 5:22AM1.93m | 6:59PM1.87m | 6:14AM2.04m | 7:31PM1.94m | 7:00AM2.11m | 8:00PM1.99m | 7:42AM2.14m | 8:29PM2.02m | 8:22AM2.11m | 8:57PM2.02m | ||||||||
Low Tide | 10:28AM0.47m | 10:45PM1.22m | 11:29AM0.33m | 11:45PM1.10m | 12:18PM0.23m | 00:30AM0.96m | 12:59PM0.17m | 1:09AM0.81m | 1:37PM0.17m | 1:47AM0.69m | 2:12PM0.22m | 2:23AM0.60m | 2:44PM0.32m | 2:59AM0.55m | |||||||
5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | |
— | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | |
mm | 3 | 3 | 4 | 1 | — | 2 | 4 | — | 1 | — | 5 | 7 | 5 | 6 | 1 | 2 | 3 | 1 | 1 | 8 | 5 |
Temp °C | 29 | 29 | 28 | 29 | 30 | 28 | 29 | 30 | 28 | 28 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 28 |
Feels °C | 29 | 29 | 28 | 31 | 32 | 31 | 32 | 34 | 32 | 32 | 33 | 32 | 34 | 34 | 32 | 32 | 32 | 30 | 30 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | SSW 10 | S 10 | S 10 | S 10 | SSW 10 | SSW 10 | S 10 | S 9 | S 9 | S 8 | SSW 9 | SSW 8 | S 8 | S 8 | S 8 | S 8 | ESE 5 | ENE 11 | ENE 10 |
774 | 1002 | 333 | 500 | 459 | 400 | 190 | 186 | 255 | 198 | 127 | 115 | 123 | 115 | 65 | 68 | 49 | 33 | 18 | 66 | 116 | |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | W 11 | E 13 | E 13 | E 12 | S 11 | SSE 10 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ESE 5 | SW 9 | ENE 11 | S 8 | SSW 9 |
212 | 165 | 291 | 609 | 427 | 314 | 229 | 170 | 193 | 135 | 130 | 77 | 86 | 86 | 56 | 38 | 13 | 40 | 65 | 30 | 53 | |
Swell 3 Height (m) Direction Period (s) | ENE 15 | ENE 14 | E 14 | SW 11 | SW 11 | SW 11 | ENE 12 | ENE 12 | SW 10 | E 5 | SW 9 | NE 12 | N 7 | N 7 | SW 9 | W 8 | W 7 | ENE 9 | SW 9 | SW 8 | S 8 |
42 | 70 | 306 | 233 | 191 | 142 | 240 | 254 | 45 | 9 | 23 | 37 | 17 | 15 | 26 | 21 | 26 | 28 | 37 | 35 | 19 | |
Wind waves Height (m) Direction Period (s) | S 10 | S 10 | SSE 10 | — | — | E 6 | — | — | — | — | — | ESE 5 | — | — | ESE 4 | ESE 5 | — | ESE 5 | — | ESE 5 | ESE 6 |
1527 | 1493 | 717 | — | — | 41 | — | — | — | — | — | 5 | — | — | 6 | 12 | — | 17 | — | 19 | 34 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 674 | 674 | 595 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 64 | 66 | 66 | 0 | 66 |
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.











