
Surf Forecasts:
Yonabaru surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 12PM (local time) - 4.5ft (1.3m), 10s period, NNW swell with offshore winds.
- Most powerful swell: Friday 11 Sep, 9AM (local time) - 7ft (2.2m), 10s period, SE swell with 928 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 6PM (local time) - 3ft (0.9m), 7s period with NW 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 Friday (Sep 04) at 6PM. The primary swell is predicted to be 0.9m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 2.2m 10s and forecast to arrive on Friday (Sep 11) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 11s period and expected on Friday (Sep 04) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 4th Sep) | 3ft (0.9m) 7s |
| Best Surf | 12PM (Sat 5th Sep) | 4.5ft (1.3m) 10s |
| Most Powerful | 9AM (Fri 11th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you – this 16-day window for Yonabaru is a tough watch. There are no standout days where everything lines up, and the first real suggestion of surfable waves doesn’t pop up until Saturday the 5th, and even then it’s nothing to get excited about. After that, there’s a long stretch of poor conditions right through until Friday the 11th, when a bit more size shows but with questionable tide and wind. The final few days look flat or ordinary.
Yonabaru – This is a beginner-friendly spot, fairly exposed to swell and best with a northeast direction. Right now, the water temperature is about average for this time of year, nothing out of the ordinary.
The first chance of anything rideable comes Saturday morning, 5th September. A small 2ft swell from the NNW with a period of 10 seconds and gentle cross-offshore breeze from the SSW. The combined swell energy is low at 136, but it’s clean and surfable. The afternoon drops off into light cross-shore wind and even smaller surf, so the morning is your window if you’re keen.
Sunday the 6th is a write-off – 5ft of short-period windswell from the NE with a moderate cross-onshore breeze and choppy conditions. Not worth a paddle.
Monday the 7th is similar, cross-shore wind and lumpy. Tuesday the 8th brings cleaner conditions with a cross-offshore breeze, but the swell is small at 3ft from the ENE with a long 12-second period. Combined energy is moderate at 249, but the size is tiny. Wednesday the 9th stays clean but small.
Thursday the 10th sees gentle cross-shore wind and 3ft swell – still poor.
Friday the 11th is the most interesting day of the whole outlook. The morning shows 6ft from the SE with a 7-second period and light cross-onshore wind. Combined energy jumps to 360. The afternoon improves to 8ft from the SE with a 9-second period and light cross-onshore wind. Energy hits 812, which is moderate to strong. But the wave comment flags marginal surf or questionable tide conditions. This is the best size of the period, but the direction is onshore and the quality might not match the numbers. Worth a look if you’re desperate, but don’t expect perfection.
From Saturday the 12th onward, conditions are poor. The swell drops off, the wind turns onshore, and the combined energy falls. By the 19th of September, the swell is down to 2ft with 11-second period and energy of just 77. Not worth suiting up.
If you’re chasing something in this window, the morning of Saturday the 5th is your only real shot at a clean, surfable wave. The afternoon of Friday the 11th has size but the conditions are marginal. Otherwise, it’s a long blank run.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri morning. Warm (max 29°C on Fri afternoon, min 27°C on Fri night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed morning. Warm (max 29°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | ESE 9 | ESE 9 | NW 7 | NW 11 | N 9 | NW 7 | NE 10 | NE 9 | N 7 | N 8 | ENE 10 | ENE 12 | N 8 | N 9 | N 8 | N 8 | N 8 | N 7 | N 6 | SE 9 | N 7 |
Wave Graph | |||||||||||||||||||||
92 | 58 | 75 | 505 | 175 | 75 | 380 | 376 | 112 | 51 | 72 | 196 | 190 | 175 | 103 | 76 | 71 | 51 | 29 | 21 | 14 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross | glassy |
High Tide | 12:18PM1.57m | 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 | 5:02PM1.28m | 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 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
— | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:38 | — | |
mm | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 7 |
Temp °C | 28 | 29 | 27 | 28 | 29 | 28 | 28 | 28 | 27 | 29 | 29 | 27 | 28 | 28 | 26 | 27 | 27 | 27 | 27 | 28 | 27 |
Feels °C | 30 | 31 | 29 | 31 | 32 | 32 | 29 | 30 | 29 | 31 | 30 | 30 | 28 | 28 | 27 | 28 | 27 | 28 | 28 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | NNW 7 | S 9 | NW 11 | SSW 8 | NW 7 | WNW 7 | SSW 8 | E 9 | N 8 | ENE 10 | ENE 12 | ENE 11 | WNW 6 | WNW 6 | S 8 | S 7 | S 7 | N 6 | N 7 | E 5 |
92 | 40 | 159 | 505 | 228 | 75 | 31 | 26 | 57 | 42 | 72 | 196 | 88 | 25 | 13 | 18 | 17 | 9 | 29 | 17 | 11 | |
Swell 2 Height (m) Direction Period (s) | N 7 | ESE 9 | NW 7 | SSW 9 | N 9 | SSW 9 | SSW 8 | WNW 7 | E 6 | E 8 | WNW 6 | WNW 6 | SSW 8 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | SE 10 | S 7 | SE 9 | N 7 |
38 | 58 | 75 | 297 | 175 | 101 | 45 | 18 | 26 | 51 | 24 | 26 | 24 | 54 | 28 | 15 | 14 | 15 | 8 | 21 | 14 | |
Swell 3 Height (m) Direction Period (s) | — | E 12 | E 9 | ESE 8 | WNW 7 | N 9 | S 8 | SSE 9 | SW 8 | WNW 6 | S 9 | SSW 8 | SSE 8 | SSE 9 | S 8 | WNW 5 | SE 10 | ENE 8 | SE 9 | NW 6 | NW 7 |
— | 3 | 59 | 19 | 85 | 42 | 35 | 26 | 17 | 26 | 37 | 28 | 13 | 26 | 19 | 2 | 14 | 7 | 14 | 10 | 14 | |
Wind waves Height (m) Direction Period (s) | SW 10 | SSW 10 | SW 9 | — | — | E 4 | NE 10 | NE 9 | N 7 | NE 5 | NNE 6 | N 8 | N 8 | N 9 | N 8 | N 8 | N 8 | N 7 | NNE 3 | NE 3 | — |
739 | 533 | 217 | — | — | 27 | 380 | 376 | 112 | 12 | 63 | 113 | 190 | 175 | 103 | 76 | 71 | 51 | 4 | 7 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 607 | 765 | 607 | 607 | 0 | 10 | 16 | 14 | 853 | 13 | 765 | 792 | 670 | 768 | 792 | 607 | 792 | 792 | 14 | 792 | 47 |
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.










