Surf Forecasts:
Yonabaru surf forecast from 3 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 9PM (local time) - 11ft (3.5m), 18s period, E swell with cross-shore winds.
- Most powerful swell: Saturday 8 Aug, 3AM (local time) - 34ft (10.5m), 14s period, NW swell with 39,116 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 9PM (local time) - 11ft (3.5m), 18s 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 05) at 9PM. The primary swell is predicted to be 3.5m and 18s period with a secondary swell of 0.9m and 5s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 10.5m 14s and forecast to arrive on Saturday (Aug 08) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 11.0m 14s period and expected on Sunday (Aug 09) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 5th Aug) | 11ft (3.5m) 18s |
| Best Surf | 9PM (Wed 5th Aug) | 11ft (3.5m) 18s |
| Most Powerful | 3AM (Sat 8th Aug) | 34ft (10.5m) 14s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, let me tell you what’s looking good here. I’ve been staring at the charts for your area, and honestly, for the first week or so, it’s a bit of a write-off. We’ve got a real slow start, so don’t even bother waxing the board just yet. The first real chance to get wet comes further down the line.
For the first week of August, it’s basically a no-go. The swell at Yonabaru is building, but it’s blown out by strong onshore winds or just too big and messy. The energy is there, but the quality is poor. The water is a touch warmer than normal at 87°, which is nice, but that won’t help you paddle into junk.
We’re looking at a big gap from the 3rd all the way through to the middle of the month. You’ll see a few days with a bit of swell, like around the 5th and 6th, but the wind goes nuts. By Thursday the 6th, the swell hits 15 ft with a very long period of 18 seconds, and the combined energy is massive at 14511. That’s way too much for Yonabaru, and it’s only for the experts if anyone is silly enough to try. For the rest of us, it’s a washout.
Things calm down a bit after the 10th, but the swell drops out completely. There’s just nothing there for days. The whole stretch from Tuesday the 11th to Sunday the 16th is basically flat or ankle-biters with no push. The wind goes light and clean, but there’s no wave to ride.
The one standout, the little gem in this whole dusty forecast, is Monday the 17th. It’s a long way off, so don’t get too attached, but it’s the only morning that looks half-decent. The swell picks up to 4 ft from the east, with a period of 11 seconds, which is a proper groundswell. The energy is a modest 289, so it’s not a powerhouse, but the wind is light and cross-offshore from the northwest. That means clean, glassy conditions. The water is still warm, and for a beginner spot like Yonabaru, that’s about as good as it’s going to get in this window. The break is fairly consistent, but keep an eye out for crowds, as it can get busy.
So, if you’re desperate, mark Monday the 17th on your calendar. It’s a long wait, but it’s the only real chance for a clean, fun session. Anything before that is just a lesson in frustration.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Mon night. Warm (max 31°C on Mon afternoon, min 27°C on Mon night). Winds increasing (light winds from the NNE on Mon night, strong winds from the N by Thu morning). | Days 5-7 Weather SummaryHeavy rain (total 748mm), heaviest during Sat morning. Warm (max 30°C on Thu afternoon, min 28°C on Thu night). Winds increasing (strong winds from the N on Thu afternoon, extremely windy from the W by Sat night). | |||||||||||||||||||
Mon 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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) | ESE 16 | ESE 16 | E 17 | E 17 | E 17 | E 17 | E 17 | E 18 | E 18 | E 18 | E 18 | E 17 | NNW 12 | NW 12 | NNE 14 | NNE 12 | NNE 15 | SW 14 | SW 15 | E 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 636 | 793 | 1389 | 1749 | 2441 | 2827 | 3514 | 8530 | 11991 | 13471 | 15625 | 12907 | 13393 | 22367 | 2977 | 830 | 154 | 0 | 0 | 63 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 10:07PM2.03m | 10:25AM1.86m | 10:40PM1.99m | 11:23AM1.70m | 11:19PM1.94m | 12:42PM1.57m | 00:09AM1.88m | 2:39PM1.53m | 1:17AM1.84m | 4:26PM1.62m | 2:39AM1.85m | 5:27PM1.74m | ||||||||
Low Tide | 3:49PM0.64m | 4:21AM0.74m | 4:23PM0.82m | 5:12AM0.75m | 5:01PM1.01m | 6:16AM0.76m | 5:49PM1.19m | 7:36AM0.75m | 7:05PM1.34m | 9:02AM0.67m | 8:56PM1.39m | 10:14AM0.55m | 10:23PM1.34m | |||||||
 |  |  | |  | | |  | | | | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — |
 | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — |
mm | — | 3 | 2 | 1 | 2 | — | 2 | — | 2 | 3 | 12 | 16 | 32 | 209 | 97 | 102 | 169 | 108 | 47 | 11 |
Temp °C | 31 | 29 | 31 | 31 | 29 | 31 | 30 | 29 | 30 | 30 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 34 | 32 | 34 | 34 | 33 | 33 | 32 | 31 | 29 | 28 | 26 | 22 | 19 | 13 | 16 | 18 | 14 | 16 | 18 | 23 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 16 | E 17 | E 17 | E 17 | E 17 | E 17 | E 18 | E 18 | E 18 | E 18 | E 17 | ENE 16 | NE 15 | NNE 14 | S 10 | NNE 15 | — | — | E 14 |
| kJ | 636 | 793 | 1389 | 1749 | 2441 | 2827 | 3514 | 8530 | 11991 | 13471 | 15625 | 12907 | 8639 | 12016 | 2977 | 739 | 154 | — | — | 63 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | S 7 | SSE 7 | SSE 8 | SE 8 | SE 8 | S 7 | — | — | — | — | — | — | NE 15 | — | NNE 12 | — | — | — | — |
| kJ | 5 | 4 | 10 | 21 | 14 | 28 | 17 | — | — | — | — | — | — | 3308 | — | 830 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 7 | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 16 | — | — | — | — |
| kJ | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 310 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 7 | N 4 | SE 8 | — | — | — | NNE 4 | — | N 7 | N 8 | N 9 | N 10 | NNW 12 | NW 12 | WNW 13 | W 12 | SW 13 | SW 14 | SW 15 | SW 14 |
| kJ | 4 | 6 | 21 | — | — | — | 35 | — | 602 | 1040 | 2345 | 6442 | 13393 | 22367 | 23966 | 14547 | 36536 | 47001 | 45808 | 30779 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 16 | 16 | 47 | 14 | 17 | 47 | 607 | 607 | 853 | 727 | 607 | 1166 | 634 | 727 | 765 | 727 | 727 | 765 | 619 | 616 |
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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