Surf Forecasts:
Yonabaru surf forecast from 6 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 6AM (local time) - 2ft (0.6m), 11s period, E swell with cross-offshore winds.
- Most powerful swell: Friday 7 Aug, 12AM (local time) - 13ft (4.0m), 16s period, E swell with 7,465 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 6AM (local time) - 2ft (0.6m), 11s period with E swell.
Best Forecast Surf Conditions for Yonabaru this week:
The surf forecast for Yonabaru over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 6AM. The primary swell is predicted to be 0.6m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 4.0m 16s and forecast to arrive on Friday (Aug 07) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 8.0m 13s period and expected on Saturday (Aug 08) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Best Surf | 6AM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Most Powerful | 12AM (Fri 7th Aug) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about the 16-day window for Yonabaru. Straight up, I’m not gonna sugarcoat it – this is a rough stretch for surfers. The data shows a solid 9-day gap at the start with absolutely nothing worthwhile. The first proper sniff of surf doesn’t arrive until the 15th of August, and even then it’s barely a whisper. After that, the energy stays weak and the conditions are messy, so we’re looking at a very long, quiet period.
The first chance for a paddle is on the morning of Saturday the 15th. Yonabaru is a beginner-friendly break, fairly consistent, and it’s getting a tiny east swell of 0.7m with a moderate 11-second period. The combined energy is a weak 139, so don’t expect any power. The wind is a gentle, clean cross-offshore breeze, which is a major positive. That’s the only real standout here, and it’s a very small one. The water is about average for this time of year, a touch warmer than normal. But for a beginner or someone just wanting to get wet, that morning window is your best bet. Keep in mind, crowds are possible here sometimes.
After that brief window, the surf stays small and the wind turns onshore and cross-shore for the rest of the period. By the 20th and 21st of August, the swell does bump up a little – 1.2m to 1.3m from the east, with a short 9-10 second period. The energy is still moderate, in the 200-300 range, but the wind is straight onshore and choppy. It’s poor surf, not worth getting excited about. For the whole 16 days, there’s only one half-decent morning, and that’s it.
Rusty out.
Short Range ForecastHeavy rain (total 180mm), heaviest during Fri afternoon. Warm (max 30°C on Sun morning, min 27°C on Thu night). Winds increasing (fresh winds from the N on Thu afternoon, stormy winds from the SW by Fri afternoon). | Days 5-7 Weather SummaryHeavy rain (total 24mm), heaviest during Mon night. Warm (max 31°C on Tue afternoon, min 28°C on Sun night). Winds decreasing (strong winds from the SSE on Sun afternoon, light winds from the SSW by Tue night). | |||||||||||||||||||
Thu 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 16 | E 16 | ENE 16 | NNE 12 | E 12 | E 11 | E 10 | E 10 | E 10 | E 10 | E 14 | E 14 | E 13 | E 12 | E 12 | E 12 | E 11 | E 11 | E 11 | E 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 8356 | 7465 | 5361 | 1761 | 68 | 61 | 76 | 68 | 48 | 68 | 246 | 368 | 342 | 248 | 233 | 136 | 123 | 84 | 81 | 50 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-off | cross | cross |
High Tide | 00:09AM1.88m | 2:39PM1.53m | 1:17AM1.84m | 4:26PM1.62m | 2:39AM1.85m | 5:27PM1.74m | 3:54AM1.92m | 6:07PM1.86m | 4:54AM2.01m | 6:39PM1.95m | 5:43AM2.11m | 7:09PM2.03m | ||||||||
Low Tide | 5:49PM1.19m | 7:36AM0.75m | 7:05PM1.34m | 9:02AM0.67m | 8:56PM1.39m | 10:14AM0.55m | 10:23PM1.34m | 11:08AM0.43m | 11:20PM1.24m | 11:53AM0.33m | 00:03AM1.12m | 12:32PM0.26m | 00:41AM0.99m | |||||||
 |  |  | | |  | | | | | | | | | | | | | | | |
 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — |
mm | — | 15 | 28 | 47 | 69 | 6 | 5 | 8 | 2 | 2 | 4 | 2 | 2 | 7 | 3 | 2 | 2 | — | 4 | 3 |
Temp °C | 29 | 28 | 28 | 28 | 29 | 28 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 31 | 28 | 30 | 29 | 28 |
Feels °C | 28 | 25 | 22 | 20 | 22 | 21 | 25 | 28 | 29 | 29 | 29 | 31 | 32 | 31 | 33 | 34 | 32 | 34 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | E 16 | E 16 | ENE 16 | NNE 12 | WNW 12 | E 11 | E 10 | WSW 14 | WSW 13 | W 13 | W 13 | SW 12 | SW 12 | SW 12 | S 10 | SSW 10 | S 10 | SSW 9 | SW 10 | S 9 |
| kJ | 8356 | 7465 | 5361 | 1761 | 4066 | 61 | 76 | 3949 | 1592 | 787 | 775 | 1655 | 1444 | 1058 | 674 | 757 | 417 | 424 | 235 | 192 |
Swell 2 Height (m) Direction Period (s) | — | — | NNE 11 | E 12 | E 12 | ENE 16 | E 15 | E 10 | E 10 | E 10 | E 14 | W 12 | E 13 | E 12 | SW 11 | SW 11 | SW 10 | E 11 | S 9 | SW 9 |
| kJ | — | — | 1186 | 356 | 68 | 24 | 17 | 68 | 48 | 68 | 246 | 266 | 342 | 248 | 629 | 171 | 284 | 84 | 160 | 132 |
Swell 3 Height (m) Direction Period (s) | — | — | — | ENE 12 | E 16 | ENE 16 | ENE 15 | E 15 | E 15 | E 15 | — | E 14 | W 10 | W 10 | E 12 | E 12 | E 11 | E 6 | E 11 | E 10 |
| kJ | — | — | — | 267 | 5 | 24 | 21 | 17 | 17 | 38 | — | 368 | 108 | 54 | 233 | 136 | 123 | 11 | 81 | 50 |
Wind waves Height (m) Direction Period (s) | N 6 | N 9 | NW 9 | W 10 | SSW 10 | SSW 13 | SSW 13 | S 10 | S 11 | S 12 | SSW 12 | S 11 | S 12 | S 10 | — | — | — | — | — | ESE 5 |
| kJ | 245 | 1689 | 3920 | 8227 | 4953 | 19359 | 13618 | 3599 | 4755 | 4530 | 4187 | 1493 | 1444 | 944 | — | — | — | — | — | 8 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 785 | 607 | 1309 | 765 | 619 | 765 | 619 | 619 | 616 | 616 | 599 | 599 | 599 | 599 | 622 | 607 | 599 | 599 | 13 | 10 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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Information about the Yonabaru Surf forecast
The above surf forecast table for Yonabaru provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Yonabaru can be found by selecting the local surf guide option on the grey menu. Our Yonabaru 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 (Yonabaru) 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 Yonabaru 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.
Yonabaru is 5 km (3 miles) from the city of Ginowan. If you plan a holiday in Okinawa, look for hotels and other accommodation in Ginowan. Ginowan has rooms for a wide range of budgets as well as car hire and transport links.
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