Surf Forecasts:
Yonabaru surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 6PM (local time) - 7ft (2.1m), 11s period, E swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 12AM (local time) - 8ft (2.5m), 11s period, NNW swell with 1,661 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 6PM (local time) - 7ft (2.1m), 11s 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 6PM. The primary swell is predicted to be 2.1m and 11s 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 2.5m 11s and forecast to arrive on Sunday (Sep 06) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 11s period and expected on Friday (Sep 04) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 3rd Sep) | 7ft (2.1m) 11s |
| Best Surf | 6PM (Thu 3rd Sep) | 7ft (2.1m) 11s |
| Most Powerful | 12AM (Sun 6th Sep) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's get straight into it.
Look, the next couple of weeks are a bit of a mixed bag, but there's a small window of something decent if you're keen. The main wave is going to be from the east, but we've got a lot of wind and messy conditions to deal with for most of the period.
The best bet on offer is Yonabaru. It's a fairly consistent beginner-friendly spot, fairly exposed to the east. The water temp is about average for the time of year, so nothing wild there. We get a pulse of long-period groundswell pushing in on the 17th, with a solid 7 ft of east swell and a period of 14 seconds. The combined energy is strong at 1579. That's a big, powerful swell, but it's a bit of a double-edged sword. That long period (over 15 seconds is very long, so 14 seconds is getting up there) means it will be better shaped and have more energy, but at a beach break it might run a bit straight. The wind is a light cross-onshore, which keeps it from being glassy, but it's still surfable. Keep in mind that at 7 ft, this is getting into expert territory. The following morning, the 18th, looks similar with 8 ft east swell (13 second period) and 1754 combined energy, another strong one. The wind is still light cross-onshore. This is the standout window, but it's a long way out, so treat it with a bit of caution.
Before that, the first few days are a write-off. The 3rd has some 7 ft to 8 ft east swell, but the wind is messy and there are thunderstorms. The scores are low for a reason. From the 4th through to the 16th, it's a long stretch of nothing but poor conditions. The swell is all over the place in direction and size, but the wind is consistently too strong and from the wrong direction, making everything choppy and unappealing. There are a few days with NW swell and clean cross-offshore winds on the 5th and 6th, but the swell is short period and the wave quality is still rated as poor or marginal. It's a long gap of nothing to get excited about.
So, to sum it up: the next couple of weeks are mostly a bust, but the 17th and 18th of September have a real shot at some powerful, long-period east swell at Yonabaru. It's for the experienced crew, and it's a long-range call, so keep an eye on it.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Wed night. Warm (max 29°C on Thu morning, min 26°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Sat night. Warm (max 29°C on Sun afternoon, min 27°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 10 | E 10 | E 10 | E 10 | ESE 10 | N 8 | NNW 8 | NNW 11 | NNW 11 | NNW 11 | NW 8 | NW 8 | NNW 7 | NW 7 | NW 8 | N 8 | E 9 | E 9 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 1198 | 1156 | 882 | 296 | 94 | 78 | 146 | 631 | 773 | 1661 | 908 | 736 | 440 | 394 | 328 | 42 | 111 | 76 | 216 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross |
High Tide | 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 | 3:47AM1.83m | 5:37PM1.87m | |||||||
Low Tide | 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 | 10:47AM0.51m | 11:09PM1.12m | |||||||
 |  | |  | | | | |  | |  | | | | |  |  | |  | |
 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | 6:47 | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — |
mm | 7 | 4 | 3 | 1 | 1 | 2 | 1 | 1 | — | 4 | 2 | 2 | 3 | 2 | 3 | — | — | 1 | — |
Temp °C | 27 | 29 | 29 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 28 | 32 | 32 | 30 | 32 | 31 | 31 | 29 | 28 | 27 | 29 | 31 | 31 | 32 | 32 | 30 | 32 | 31 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 10 | E 10 | E 10 | E 10 | SSW 10 | SSW 9 | SSW 9 | NNW 11 | NNW 11 | SSW 8 | SSW 8 | SW 8 | E 9 | E 8 | E 8 | WNW 7 | NW 7 | E 9 | E 10 |
| kJ | 1198 | 1156 | 882 | 296 | 296 | 289 | 375 | 631 | 773 | 154 | 72 | 33 | 25 | 22 | 46 | 99 | 65 | 76 | 216 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | SSW 11 | SW 12 | N 6 | ESE 10 | N 8 | NNW 8 | SSW 9 | SSW 8 | E 10 | E 9 | S 8 | S 9 | S 8 | S 8 | N 8 | E 9 | N 7 | N 9 |
| kJ | 175 | 215 | 273 | 20 | 94 | 72 | 146 | 249 | 180 | 16 | 15 | 20 | 23 | 12 | 11 | 42 | 111 | 24 | 60 |
Swell 3 Height (m) Direction Period (s) | — | S 8 | N 6 | NW 7 | N 7 | E 9 | E 9 | ESE 8 | E 10 | E 15 | E 14 | E 9 | SW 8 | SW 8 | SW 8 | E 6 | N 8 | ESE 11 | ESE 13 |
| kJ | — | 10 | 25 | 2 | 38 | 78 | 41 | 11 | 31 | 4 | 4 | 14 | 9 | 11 | 3 | 18 | 18 | 42 | 35 |
Wind waves Height (m) Direction Period (s) | — | — | W 3 | SW 11 | WSW 4 | WSW 4 | — | WNW 4 | NNW 11 | NNW 11 | NW 8 | NW 8 | NNW 7 | NW 7 | NW 8 | — | — | WNW 6 | NW 6 |
| kJ | — | — | 4 | 702 | 16 | 13 | — | 12 | 458 | 1661 | 908 | 736 | 440 | 394 | 328 | — | — | 47 | 58 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 13 | 12 | 607 | 33 | 607 | 0 | 820 | 607 | 670 | 670 | 727 | 13 | 13 | 13 | 13 | 13 | 14 | 670 |
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.
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