Surf Forecasts:
Yonabaru surf forecast from 1 Sep 2026:
- Best quality surf: Thursday 3 Sep, 9PM (local time) - 4ft (1.2m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 12AM (local time) - 8ft (2.5m), 11s period, E swell with 1,688 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 9PM (local time) - 4ft (1.2m), 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 (Sep 03) at 9PM. The primary swell is predicted to be 1.2m and 10s period. 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 2.5m 11s and forecast to arrive on Thursday (Sep 03) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 9s period and expected on Saturday (Sep 05) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 3rd Sep) | 4ft (1.2m) 10s |
| Best Surf | 9PM (Thu 3rd Sep) | 4ft (1.2m) 10s |
| Most Powerful | 12AM (Thu 3rd Sep) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the next couple of weeks are looking pretty grim overall for the Yonabaru area. We've got a lot of onshore and cross-shore winds messing things up, and while there's plenty of water moving around, it's rarely coming together for a proper surf.
Let's start with today, 1 September. It's a write-off. We've got a solid 8ft swell out of the ESE, sure, but it’s packing a huge 1119 (moderate to strong energy) and a howling 30 km/h easterly wind is blowing straight onshore. It's a washing machine out there. For a beginner spot, this is way too much power and too messy.
We stay in the doldrums for the rest of the first week and into the second. There's a little tease on the morning of 4 September with some 3ft, 8-second swell and a light cross-offshore breeze from the NNW, but the combined energy is weak at 125 and the score is still poor for a clean session. Thursday the 3rd had some clean-ish looking conditions with NNW cross-off winds, but the swell was still messy and the quality just wasn't there for a real recommendation. From the 5th through the 8th, it's a barrage of moderate cross-shore breezes and chop. We're looking at a solid week-plus of either no-go or strictly marginal surf.
Moving into the second week – around 9 and 10 September – there's a bit more size. We see 6ft to 7ft of swell coming from the NNW, but the wind stays a problem. It’s cross or cross-onshore, leaving it choppy and uninviting. For a spot that’s often a beginner-friendly beach break, this is just not the call.
Around 12 September, there's an interesting pulse: a long period 12-second easterly swell showing up at 7ft, with combined energy hitting a whopping 1611 (strong). But the catch? The wind is onshore. For a beach break, a long-period groundswell like that tends to close out and get thumpy. You'd want a point or reef for that kind of energy, and Yonabaru isn't it.
The final few days – 13 to 16 September – are a real mess. We get monster 12ft swells from the ESE with energy readings over 2000 (very strong), but the wind is onshore the whole time at 25-30 km/h. That’s not surfable for anyone, let alone the beginners this spot is best for. Later on the 15th and 16th, the wind finally eases, but the swell drops and the conditions are still cross or cross-on.
To be honest, there isn't a single standout session in this whole 16-day window. The best call I can give you is to keep an eye on the 16th of September. The morning shows a 6ft ENE swell with a 9-second period, the wind is a light 10 km/h from the north, and it’s a cross-shore. The energy is moderate (737), and the score is a 2/10 – which, in this terrible run, is the highest we get. The water is around 84°F right now, which is dead average for the time of year – no surprises there.
But for a proper wave? Nothing doing. The wind and swell just aren't lining up. It’s a quiet period for Yonabaru. Sometimes that’s just how it goes. Keep an eye on the charts, things can flip.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Thu morning. Warm (max 29°C on Fri morning, min 26°C on Wed night). Winds decreasing (fresh winds from the E on Tue afternoon, light winds from the NW by Thu night). | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Mon morning. Warm (max 29°C on Fri afternoon, min 26°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Tue 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 9 | ESE 9 | E 9 | E 9 | E 11 | E 10 | E 10 | E 10 | N 8 | N 8 | E 9 | N 9 | N 10 | N 9 | N 9 | NNE 9 | N 8 | N 8 | N 8 | N 9 |
Wave Graph | ||||||||||||||||||||
1119 | 984 | 710 | 1041 | 1688 | 770 | 524 | 183 | 125 | 71 | 40 | 160 | 220 | 162 | 133 | 280 | 91 | 84 | 61 | 101 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | on | cross-on | cross | cross | cross-off | cross-off | cross |
High Tide | 9:18PM2.09m | 10:05AM1.87m | 9:49PM2.03m | 10:59AM1.71m | 10:24PM1.95m | 12:18PM1.57m | 11:11PM1.85m | 2:28PM1.53m | 00:28AM1.76m | 4:15PM1.63m | 2:19AM1.75m | 5:04PM1.76m | ||||||||
Low Tide | 3:14PM0.77m | 3:47AM0.54m | 3:45PM0.94m | 4:34AM0.60m | 4:18PM1.11m | 5:32AM0.67m | 5:02PM1.28m | 6:54AM0.73m | 6:31PM1.41m | 8:32AM0.70m | 8:58PM1.41m | 9:52AM0.61m | 10:21PM1.28m | |||||||
— | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | |
mm | 2 | 1 | — | — | 2 | 7 | 4 | 3 | — | — | — | — | 1 | 1 | — | — | — | 3 | 2 | — |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 28 | 27 | 27 | 28 | 27 |
Feels °C | 29 | 27 | 28 | 27 | 29 | 31 | 30 | 31 | 32 | 32 | 32 | 31 | 31 | 31 | 29 | 28 | 27 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 10 | SSW 10 | SSW 10 | E 11 | E 10 | E 10 | SSW 11 | S 9 | S 10 | S 9 | N 9 | N 10 | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 | N 8 | E 10 |
41 | 79 | 175 | 175 | 1688 | 770 | 524 | 386 | 180 | 183 | 199 | 160 | 220 | 180 | 144 | 84 | 144 | 84 | 61 | 73 | |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | E 12 | E 12 | SW 10 | SSW 11 | SW 12 | E 10 | N 8 | SW 10 | SW 10 | S 8 | S 8 | N 9 | N 9 | S 8 | N 8 | N 8 | S 8 | S 9 |
20 | 5 | 77 | 76 | 145 | 238 | 309 | 183 | 125 | 139 | 117 | 116 | 116 | 162 | 133 | 43 | 91 | 84 | 33 | 57 | |
Swell 3 Height (m) Direction Period (s) | — | E 14 | — | — | — | S 8 | N 7 | N 7 | SW 11 | N 8 | E 9 | SW 9 | SW 9 | ESE 10 | E 9 | ESE 9 | ESE 9 | ESE 8 | SSW 8 | SW 8 |
— | 35 | — | — | — | 5 | 58 | 85 | 162 | 71 | 40 | 99 | 83 | 30 | 26 | 27 | 26 | 24 | 23 | 17 | |
Wind waves Height (m) Direction Period (s) | ESE 9 | ESE 9 | E 9 | E 9 | — | N 6 | — | — | — | — | — | — | — | — | E 4 | NNE 9 | ENE 4 | ENE 4 | N 3 | N 9 |
1119 | 984 | 710 | 1041 | — | 68 | — | — | — | — | — | — | — | — | 6 | 280 | 7 | 1 | 2 | 101 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 634 | 607 | 995 | 14 | 13 | 14 | 16 | 0 | 0 | 0 | 13 | 13 | 13 | 765 | 47 | 13 | 13 | 792 | 670 | 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.











