Surf Forecasts:
Yonabaru surf forecast from 11 Aug 2026:
- Best quality surf: Thursday 13 Aug, 6AM (local time) - 2ft (0.6m), 10s period, E swell with glassy winds.
- Most powerful swell: Wednesday 12 Aug, 3AM (local time) - 2.5ft (0.7m), 11s period, E swell with 125 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 6AM (local time) - 2ft (0.6m), 10s 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 Thursday (Aug 13) at 6AM. The primary swell is predicted to be 0.6m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 0.7m 11s and forecast to arrive on Wednesday (Aug 12) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 8s period and expected on Wednesday (Aug 12) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 13th Aug) | 2ft (0.6m) 10s |
| Best Surf | 6AM (Thu 13th Aug) | 2ft (0.6m) 10s |
| Most Powerful | 3AM (Wed 12th Aug) | 2.5ft (0.7m) 11s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you—this is a tough stretch for Yonabaru. The entire 16-day window is basically a bust for any decent surf. We’ve got a long run of small, weak, and often messy conditions, and the only real flicker of hope comes right at the very end.
The water temp is sitting just about average for this time of year, nothing wild there.
The forecast starts with a real nothing burger. From Wednesday the 12th through the 24th of August, it’s a long slog of tiny swell—mostly 1 to 2 feet—with weak energy, often in the double digits. The wind is constantly onshore, cross-onshore, or just plain wrong, making things choppy and rippled. There’s a brief moment on Saturday the 15th where the wind goes glassy, but the swell is still tiny at 2 feet, and the energy is weak. That’s about as good as it gets for the first two weeks, and that’s not saying much. The waves are surfable but very ordinary. You’ll find a bit of shape from the east swell, but it’s a beginner-level wave at best.
The only real standout, and you have to wait for it, is Wednesday the 26th of August. That morning we see a jump in size to 4 feet from the ESE with a period of 11 seconds. The combined energy hits 361, which is a solid moderate push. The wind is light cross-shore from the NNE, which should keep the surface clean. That afternoon, the energy actually climbs to 391 with a light cross-shore wind from the NW. Now, this is the best swell of the whole period, but it’s still a marginal call. Yonabaru is a fairly exposed beginner spot, best with a NE optimum swell direction, and this ESE swell is a bit off-angle. Still, for the size and the clean conditions, it’s the only session worth paddling out for. The next day, Thursday the 27th, still has some 4 feet swell with a clean cross-offshore wind from the NW, but the energy drops to 264.
Overall, mate, it’s a long wait for not much. If you’re desperate, the 26th is your best bet, but don’t expect any fireworks. The rest of the window is a write-off.
Rusty
Short Range ForecastHeavy rain (total 35mm), heaviest during Wed morning. Warm (max 29°C on Fri afternoon, min 25°C on Wed afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Fri night. Warm (max 29°C on Sun morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 12 | E 11 | E 11 | E 10 | E 10 | E 10 | ENE 10 | E 10 | ESE 5 | E 6 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 134 | 86 | 83 | 51 | 73 | 51 | 33 | 31 | 9 | 15 | 61 | 58 | 74 | 73 | 71 | 50 | 51 | 50 | 48 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | on | cross-on | on | glassy | cross-on | glassy | cross-on | on | glassy | glassy | cross-on | cross-on | cross-on | cross-on | on | on | cross-on |
High Tide | 5:43AM2.11m | 7:09PM2.03m | 6:27AM2.18m | 7:37PM2.08m | 7:08AM2.22m | 8:05PM2.11m | 7:48AM2.22m | 8:32PM2.12m | 8:27AM2.17m | 8:59PM2.11m | 9:07AM2.08m | 9:27PM2.09m | |||||||
Low Tide | 00:03AM1.12m | 12:32PM0.26m | 00:41AM0.99m | 1:07PM0.25m | 1:17AM0.87m | 1:41PM0.28m | 1:51AM0.76m | 2:13PM0.35m | 2:26AM0.69m | 2:45PM0.47m | 3:02AM0.64m | 3:16PM0.62m | |||||||
 |  | |  |  |  |  |  | | | | |  | |  | | | | | |
 | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:08 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | 8 | 10 | 6 | 2 | 1 | — | — | 3 | 5 | 6 | 3 | 2 | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 26 | 28 | 26 | 28 | 29 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 32 | 32 | 28 | 30 | 30 | 32 | 30 | 33 | 34 | 32 | 34 | 33 | 31 | 32 | 32 | 30 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | S 9 | SSW 8 | S 8 | S 8 | SW 8 | S 8 | SSW 8 | SSW 8 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SW 9 | SSW 9 | SW 8 |
| kJ | 360 | 188 | 217 | 138 | 109 | 98 | 113 | 151 | 78 | 62 | 105 | 131 | 90 | 103 | 86 | 138 | 115 | 99 | 74 |
Swell 2 Height (m) Direction Period (s) | E 12 | SW 9 | E 11 | SW 9 | SW 9 | S 8 | SW 8 | E 10 | S 8 | S 8 | S 9 | E 11 | S 8 | E 10 | E 10 | E 10 | S 8 | S 8 | E 10 |
| kJ | 134 | 114 | 83 | 64 | 78 | 68 | 53 | 31 | 51 | 44 | 42 | 58 | 43 | 73 | 71 | 50 | 44 | 41 | 48 |
Swell 3 Height (m) Direction Period (s) | E 6 | E 11 | N 8 | E 10 | E 10 | E 10 | ENE 10 | ESE 6 | ESE 5 | E 6 | E 11 | SSE 8 | E 10 | S 8 | S 8 | S 8 | E 10 | E 10 | S 8 |
| kJ | 37 | 86 | 5 | 51 | 73 | 51 | 33 | 6 | 9 | 15 | 61 | 23 | 74 | 37 | 33 | 18 | 51 | 50 | 32 |
Wind waves Height (m) Direction Period (s) | — | — | E 6 | — | — | — | — | — | — | — | E 6 | E 6 | ESE 6 | ESE 6 | ESE 5 | SE 4 | E 4 | E 4 | ESE 4 |
| kJ | — | — | 18 | — | — | — | — | — | — | — | 24 | 31 | 27 | 25 | 25 | 23 | 10 | 9 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 10 | 10 | 10 | 10 | 10 | 10 | 13 | 13 | 13 | 13 | 0 | 0 | 10 | 10 | 10 | 10 | 10 | 13 | 13 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Yonabaru surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest