
Surf Forecasts:
Yonabaru surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 12PM (local time) - 3.5ft (1.0m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 3PM (local time) - 4.5ft (1.3m), 9s period, N swell with 295 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 12PM (local time) - 3.5ft (1.0m), 9s 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 Tuesday (Sep 15) at 12PM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.3m and 5s. 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 1.3m 9s and forecast to arrive on Thursday (Sep 10) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Sunday (Sep 13) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 15th Sep) | 3.5ft (1.0m) 9s |
| Best Surf | 12PM (Tue 15th Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 3PM (Thu 10th Sep) | 4.5ft (1.3m) 9s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at the 16-day forecast for our local spot, Yonabaru. I gotta be straight with you – the outlook over this whole stretch is a tough one. We're looking at a long, long run of poor conditions with hardly a window of decent surf.
Right off the bat, there's nothing good to report. This gap stretches all the way from the start of the forecast, through the first week, and into the second. We get a little bump of energy here and there, but the wind is a constant enemy. It's mostly a cross or cross-onshore mess.
Looking at the specifics, the first real sniff of anything different doesn't come until Tuesday, September 15th. That afternoon, the wind finally drops out to glassy conditions. The swell is a tiny 3ft from the east, but it's clean. The combined energy is weak (175). It's surfable, but very ordinary. For a second, on Wednesday the 16th, we get a cross-off breeze with a similar 3ft east-southeast swell, giving us another clean window. But that's about as good as it gets.
The water here is a warm 84°F, which is about normal for this time of year.
For the rest of the run, from the 17th through to the 23rd of September, it’s back to onshore and cross-onshore junk. The swell drops right off, with heights around 1ft to 2ft and combined energy falling into the double digits (61 - 109). The wind picks up again, too, with some strong breezes throwing in a lumpy chop.
So, what’s the call? There are no real standouts here. If you are desperate for a paddle, the glassy window on the 15th of September is your best bet for some clean, small waves, and the 16th of September offers a similar, clean option. Overall, Yonabaru is an inconsistent spot, and this forecast shows a blank run that's pretty typical for the area when the winds don't play ball. Keep an eye on the forecast, though; things can change.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Thu night. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 29°C on Fri afternoon, min 26°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | NNW 9 | NNW 8 | N 8 | N 8 | N 7 | N 9 | N 9 | N 9 | NNW 9 | N 8 | SE 6 | SE 6 | SE 6 | SE 7 | E 14 | E 14 | E 7 | E 8 | E 9 | E 9 |
Wave Graph | ||||||||||||||||||||
404 | 232 | 141 | 182 | 183 | 230 | 295 | 207 | 126 | 88 | 42 | 98 | 76 | 102 | 61 | 62 | 123 | 146 | 154 | 158 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | cross | on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 5:37PM1.87m | 4:48AM1.96m | 6:06PM1.97m | 5:36AM2.07m | 6:32PM2.04m | 6:18AM2.16m | 6:58PM2.10m | 6:58AM2.21m | 7:23PM2.14m | 7:35AM2.21m | 7:49PM2.16m | 8:13AM2.16m | 8:15PM2.15m | |||||||
Low Tide | 11:09PM1.12m | 11:31AM0.43m | 11:47PM0.94m | 12:08PM0.38m | 00:21AM0.77m | 12:42PM0.38m | 00:54AM0.63m | 1:14PM0.43m | 1:27AM0.51m | 1:44PM0.51m | 2:00AM0.44m | 2:14PM0.62m | 2:35AM0.41m | |||||||
— | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:42 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | |
mm | — | — | — | — | — | — | — | 3 | 4 | — | 1 | — | — | — | 1 | 2 | — | 1 | 2 | 19 |
Temp °C | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 28 | 29 | 29 | 29 | 28 | 32 | 32 | 32 | 32 | 32 | 30 | 30 | 31 | 29 | 30 | 29 | 29 | 28 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | S 8 | ENE 9 | WNW 5 | S 7 | ESE 9 | N 9 | N 9 | N 9 | NNW 9 | N 8 | N 8 | N 8 | N 7 | N 7 | S 7 | S 7 | E 13 | E 8 | E 9 | E 9 |
12 | 15 | 11 | 10 | 32 | 230 | 295 | 207 | 126 | 88 | 42 | 41 | 38 | 24 | 35 | 25 | 56 | 146 | 154 | 158 | |
Swell 2 Height (m) Direction Period (s) | E 9 | S 8 | S 8 | SE 10 | S 7 | ESE 9 | ESE 9 | ESE 9 | ESE 7 | ESE 6 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | S 7 | E 13 | E 13 | NNE 5 |
14 | 10 | 10 | 15 | 9 | 32 | 32 | 31 | 15 | 20 | 39 | 61 | 64 | 62 | 61 | 62 | 9 | 55 | 54 | 7 | |
Swell 3 Height (m) Direction Period (s) | SW 8 | SE 10 | ENE 9 | E 9 | SW 8 | S 7 | S 7 | ESE 7 | SE 9 | SE 9 | SE 9 | S 7 | S 8 | ESE 10 | N 6 | N 6 | N 6 | S 7 | S 7 | E 13 |
2 | 16 | 16 | 6 | 3 | 8 | 8 | 9 | 20 | 12 | 12 | 4 | 6 | 18 | 12 | 7 | 6 | 8 | 4 | 54 | |
Wind waves Height (m) Direction Period (s) | NNW 9 | NNW 8 | N 8 | N 8 | N 7 | — | — | — | — | — | SE 6 | SE 6 | SE 6 | SE 7 | E 6 | E 6 | E 7 | N 5 | NNE 4 | — |
404 | 232 | 141 | 182 | 183 | — | — | — | — | — | 38 | 98 | 76 | 102 | 39 | 44 | 123 | 5 | 11 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 672 | 607 | 670 | 670 | 995 | 14 | 14 | 10 | 10 | 10 | 10 | 10 | 13 | 14 | 14 | 14 | 14 | 14 | 17 | 17 |
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.










