
Surf Forecasts:
Yonabaru surf forecast from 21 Jul 2026:
- Most powerful swell: Tuesday 28 Jul, 6AM (local time) - 15ft (4.5m), 11s period, SE swell with 4,981 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 4.5m 11s and forecast to arrive on Tuesday (Jul 28) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Tuesday (Jul 28) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Tue 28th Jul) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s shaping up for us over the next couple of weeks.
Honestly, we’re looking at a pretty grim run of surf for a while. The next week and a half is almost a complete write-off, with a long stretch of nothing worth paddling out for. It’s not until the second week, around August 2nd, that things finally get interesting, but that comes with its own set of problems.
The water temp at Yonabaru is sitting at 83°, which is a bit colder than normal for this time of year, so you might want a little extra rubber if you’re sensitive to that.
We start off with a few days of tiny, weak waves. Tuesday the 21st through to Friday the 24th are all just ankle-snappers, around 1ft to 2ft from the east with a short period of 9-10 seconds. The combined energy is pathetic, barely hitting 52 (52) at its best. The wind is mostly light and glassy or offshore, which would be a dream if we had any swell, but we don’t. It’s just a flat, clean lake out there.
Then from Saturday the 25th, things get weird. The swell tries to pick up to 4ft on Saturday morning from the southeast, with a combined energy of 338 (338), but it’s all onshore and messy. After that, it drops right back to nothing, and from the 28th of July through to the 31st, we’re in a dead zone. A few days of nearly zero surf, or just tiny 0.3ft bumps with strong, stormy winds. There’s a big gap of several days with no real recommendations.
The real pulse shows up on Sunday, August 2nd. The morning has a clean, glassy 10ft swell from the southeast, but that’s hitting with a very long period of 16 seconds. The combined energy is massive at 4231 (4231). That’s a lot of juice. This is a groundswell, and with that long period, it’s going to be powerful and walled up, not ideal for a beach break. It’s expert-only territory, and honestly, for the afternoon, it’s predicted to be too big for the break, with 12ft and winds turning cross-offshore. The energy jumps to 7098 (7098). It’s a true standout for size and power, but you’d need to be a serious charger and know the spot.
Monday the 3rd of August is absolutely bonkers—26ft to 28ft with a near gale crossing it up. That’s not surfing, that’s survival. The energy reading is 37855 (37855). Completely out of control for the average punter.
After that storm passes, the swell drops back down to a meek 2ft to 3ft for the rest of the forecast, with lumpy, cross-onshore winds ruining any chance of a clean wave.
So, the standout is that Sunday, August 2nd morning window. Clean, glassy conditions and a massive 10ft southeast groundswell, but it’s a serious one for experts only. If you’re not in that bracket, you’re looking at a long wait for the next decent swell.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 30°C on Wed morning, min 27°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun morning. Warm (max 30°C on Fri morning, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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 9 | E 9 | E 9 | ENE 11 | ENE 10 | E 10 | E 10 | ENE 10 | ENE 10 | SE 7 | SE 10 | E 9 | E 9 | E 9 | E 9 | SE 14 | SE 14 | ENE 8 | E 10 |
Wave Graph | |||||||||||||||||||||
27 | 26 | 26 | 25 | 25 | 24 | 35 | 52 | 50 | 33 | 32 | 43 | 310 | 15 | 15 | 14 | 14 | 32 | 31 | 14 | 8 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | glassy | cross-off | glassy | glassy | glassy | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 11:06AM1.75m | 11:29PM1.93m | 12:16PM1.62m | 00:15AM1.89m | 1:52PM1.55m | 1:12AM1.87m | 3:40PM1.57m | 2:20AM1.87m | 5:00PM1.68m | 3:28AM1.92m | 5:53PM1.79m | 4:29AM1.99m | 6:33PM1.89m | ||||||||
Low Tide | 5:05PM0.86m | 6:07AM0.81m | 5:51PM1.04m | 7:19AM0.78m | 6:53PM1.20m | 8:39AM0.70m | 8:19PM1.31m | 9:52AM0.58m | 9:47PM1.33m | 10:50AM0.45m | 10:54PM1.29m | 11:38AM0.33m | 11:46PM1.21m | ||||||||
5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | |
— | 7:21 | — | — | 7:21 | — | — | 7:21 | — | — | 7:20 | — | — | 7:20 | — | — | 7:19 | — | — | 7:19 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 1 | 1 | 2 | — | — | — | — | 3 |
Temp °C | 29 | 29 | 28 | 30 | 30 | 28 | 30 | 30 | 28 | 30 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 |
Feels °C | 32 | 32 | 33 | 34 | 34 | 33 | 35 | 35 | 32 | 33 | 33 | 32 | 33 | 32 | 32 | 32 | 31 | 31 | 31 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 7 | SW 7 | SW 7 | SW 7 | SW 6 | ENE 11 | ENE 10 | E 10 | E 10 | ENE 10 | ENE 10 | E 10 | SE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | E 9 | SE 14 | SSW 10 | SSW 11 |
30 | 30 | 22 | 21 | 19 | 24 | 35 | 52 | 50 | 33 | 32 | 30 | 310 | 363 | 394 | 527 | 615 | 6 | 8 | 240 | 265 | |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 8 | SW 7 | SW 7 | SW 7 | WSW 7 | SE 3 | S 8 | ENE 10 | E 9 | E 9 | E 9 | E 9 | SE 14 | ENE 8 | ENE 8 | ENE 8 |
27 | 26 | 26 | 25 | 25 | 13 | 8 | 8 | 8 | 5 | 2 | 5 | 18 | 15 | 15 | 14 | 14 | 32 | 14 | 14 | 7 | |
Swell 3 Height (m) Direction Period (s) | W 8 | W 7 | W 6 | S 7 | ENE 13 | SW 6 | ESE 10 | S 7 | SSE 10 | SSE 9 | SSE 9 | SE 16 | SE 16 | SE 16 | SSE 15 | SE 15 | SE 15 | SE 14 | SE 14 | — | E 10 |
10 | 9 | 7 | 4 | 16 | 5 | 10 | 4 | 10 | 9 | 8 | 10 | 10 | 10 | 23 | 9 | 8 | 32 | 31 | — | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SE 3 | — | SE 7 | — | — | — | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
— | — | — | — | — | — | — | — | — | 3 | — | 43 | — | — | — | 815 | 849 | 884 | 874 | 1205 | 1463 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 76 | 14 | 14 | 10 | 10 | 76 | 76 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
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.










