
Surf Forecasts:
Yonabaru surf forecast from 4 Sep 2026:
- Most powerful swell: Friday 11 Sep, 3PM (local time) - 6.5ft (2.0m), 8s period, SE swell with 553 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 2.0m 8s and forecast to arrive on Friday (Sep 11) 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 2.4m 9s period and expected on Saturday (Sep 12) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Fri 11th Sep) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cookin’ for the local stretch around Yonabaru over the next couple of weeks.
Honestly, mate, this outlook is a tough one. We’re staring down a long, dry spell with nothing really worth paddling out for. There’s a gap from now all the way through to around the 11th of September where the conditions just aren't coming together. After that, there’s a flicker of something, but it’s not much to get excited about.
The first real chance we see is on Friday the 11th. By the afternoon, a pulse of 7 ft swell from the SE rolls in with an 8-second period. The combined energy reads 645 (moderate wave energy) and it’s the only time the wave comment isn’t a total write-off. But here’s the catch: the wind is cross from the south at a gentle 9 mph, and the conditions are described as "gentle cross-shore with slight cross-chop." It’s a marginal call at best, and with the swell direction coming from the SE, it’s not matching the optimum NE direction for Yonabaru. This spot is fairly exposed, so it’ll catch some of that energy, but the quality won’t be there for a standout session.
After that brief window, we drop right back off. The 12th and 13th see tiny, weak swell with long-period energy around 14 seconds, but the wind turns onshore, and the heights are barely 1 ft to 2 ft. The energy readings are low – down to 74 or 86. That long-period groundswell would want a point or reef to do anything, but here at a beach setup with onshore wind, it’s a no-go.
We get a slight bump in size around the 14th and 15th, with a 8 ft ESE swell on Tuesday the 15th morning (combined energy 1021 – strong wave energy). But the wind is onshore and strong, blowing at 16 mph from the east. That’s going to chop it up real bad. This is one of those setups where it’s looking more interesting for kite surfing than paddle surfing, to be honest.
From the 16th onward, it fades again into tiny, weak conditions, with heights under 4 ft and onshore winds. Even the 20th of September shows glassy conditions in the morning, but the swell is a pathetic 2 ft with a 5-second period – just not enough push to ride.
So, to be straight with you: there is no true standout in this forecast. The only flicker of life is that Friday 11th afternoon, but even that’s a “maybe” for a quick, scrappy session. The water temp is about average for this time of year, nothing unusual there. I wouldn’t be rushing to the water for a while. Stick to the flat spells, mate. It tends not to stay this quiet forever, but this run is a proper blank one.
Rusty.
Short Range ForecastHeavy rain (total 26mm), heaviest during Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Thu afternoon. Warm (max 29°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | NW 7 | NW 9 | NNW 10 | E 4 | E 5 | NE 5 | NE 9 | N 7 | E 9 | NNW 8 | NNW 8 | N 9 | N 8 | N 7 | N 7 | N 7 | N 6 | NNE 6 | N 9 |
Wave Graph | |||||||||||||||||||
116 | 423 | 173 | 23 | 97 | 57 | 505 | 146 | 74 | 229 | 155 | 189 | 157 | 80 | 113 | 57 | 29 | 67 | 93 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | on | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | cross | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross |
High Tide | 11:11PM1.85m | 2:28PM1.53m | 00:28AM1.76m | 4:15PM1.63m | 2:19AM1.75m | 5:04PM1.76m | 3:47AM1.83m | 5:37PM1.87m | 4:48AM1.96m | 6:06PM1.97m | 5:36AM2.07m | 6:32PM2.04m | |||||||
Low Tide | 6:54AM0.73m | 6:31PM1.41m | 8:32AM0.70m | 8:58PM1.41m | 9:52AM0.61m | 10:21PM1.28m | 10:47AM0.51m | 11:09PM1.12m | 11:31AM0.43m | 11:47PM0.94m | 12:08PM0.38m | 00:21AM0.77m | |||||||
— | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:45 | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:38 | — | |
mm | 4 | 1 | 5 | 14 | — | — | 1 | 1 | — | — | — | 1 | 1 | — | — | — | 1 | 8 | 5 |
Temp °C | 28 | 28 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 29 | 26 | 28 | 28 | 27 | 28 | 28 | 26 |
Feels °C | 31 | 30 | 33 | 30 | 31 | 31 | 28 | 30 | 31 | 28 | 29 | 30 | 27 | 28 | 28 | 30 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 9 | SSW 8 | WNW 8 | SSW 8 | SSW 8 | SSW 9 | ENE 8 | E 9 | NNW 8 | NNW 8 | ENE 10 | N 8 | E 9 | ENE 8 | N 7 | N 6 | S 7 | N 9 |
116 | 423 | 197 | 120 | 133 | 140 | 106 | 118 | 74 | 229 | 155 | 52 | 157 | 39 | 20 | 57 | 29 | 15 | 93 | |
Swell 2 Height (m) Direction Period (s) | SW 9 | ESE 8 | NNW 10 | SW 8 | N 10 | E 9 | E 9 | S 9 | SSW 9 | SSW 8 | ENE 10 | S 9 | S 8 | S 8 | S 8 | E 7 | ENE 7 | SE 9 | S 8 |
170 | 19 | 173 | 95 | 65 | 57 | 101 | 74 | 65 | 75 | 56 | 41 | 32 | 21 | 28 | 26 | 17 | 21 | 18 | |
Swell 3 Height (m) Direction Period (s) | S 9 | E 10 | W 6 | S 8 | NW 8 | NW 7 | ENE 13 | E 13 | SSE 8 | ENE 12 | S 9 | WNW 6 | ENE 9 | SW 8 | SE 9 | S 7 | S 7 | ESE 7 | NW 8 |
159 | 17 | 49 | 45 | 9 | 8 | 17 | 3 | 13 | 106 | 38 | 15 | 26 | 15 | 14 | 17 | 15 | 4 | 9 | |
Wind waves Height (m) Direction Period (s) | SW 9 | SSW 9 | — | E 4 | E 5 | NE 5 | NE 9 | N 7 | N 6 | NNW 7 | — | N 9 | — | N 7 | N 7 | — | NE 3 | NNE 6 | ENE 5 |
183 | 297 | — | 23 | 97 | 56 | 505 | 146 | 106 | 111 | — | 189 | — | 80 | 113 | — | 2 | 67 | 39 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 33 | 800 | 76 | 727 | 14 | 727 | 13 | 13 | 13 | 13 | 670 | 670 | 607 | 670 | 670 | 14 | 680 | 14 | 10 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










