
Surf Forecasts:
Yonabaru surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 6AM (local time) - 8ft (2.4m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 9PM (local time) - 10ft (3.0m), 11s period, E swell with 1,862 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 6AM (local time) - 8ft (2.4m), 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 6AM. The primary swell is predicted to be 2.4m 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 3.0m 11s and forecast to arrive on Wednesday (Sep 02) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Friday (Sep 04) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 3rd Sep) | 8ft (2.4m) 10s |
| Best Surf | 6AM (Thu 3rd Sep) | 8ft (2.4m) 10s |
| Most Powerful | 9PM (Wed 2nd Sep) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, let me give you the straight-up skinny on the upcoming surf at Yonabaru. Look, I’m not gonna sugarcoat it. For a big chunk of this forecast, it’s a real struggle. We’ve got a solid wait on our hands.
The first sign of any real hope doesn’t show up until Thursday the 3rd of September. Before that, the swell is just too messy and the wind’s all wrong. You’re looking at a few days of nothing but small, weak junk or howling onshore winds. From the 2nd through the 11th, it’s mostly a write-off. There’s a brief window on Thursday morning the 3rd, with a 8ft east swell and a nice cross-offshore breeze (15 km/h), giving you clean conditions. The water’s a warm 84°, which is totally normal for this time of year. That afternoon, the wind swings offshore (12 mph) and the swell drops a touch to 6ft from the ESE. The combined energy is still strong (1688 on the 2nd, 1119 on the 3rd morning), so there’s plenty of push, but the quality is a bit of a gamble with those thunderstorms around.
Then it gets ugly again. From the 4th right through to the 11th, it’s a desert. The swell drops to barely a ripple, or it’s onshore, or both. There’s a couple of days early in the second week, the 12th and 13th, where the swell picks up to 6ft from the ESE, but the wind is on it, blowing straight onshore at 16 mph. The wave energy is decent (693 on the 12th afternoon), but the wind will trash it. That’s more of a kite session than a surf session, to be honest.
Now, for the real standout. You’ve got to wait until the 16th of September. That Wednesday morning is the one. The swell is a solid 8ft from the east, with a long, juicy 13-second period from that groundswell. The wind is a light, cross-offshore breeze (9 mph). The combined energy is a massive 1866, meaning there’s serious power. This is a proper, clean, powerful swell. It’s a touch big for beginners, but for anyone with a bit of experience, this is the best on offer. The crowds are listed as "sometimes" at Yonabaru, so you might have some company, but with conditions that good, it’ll be worth it. The 16th afternoon is still good with a 7ft, 14-second swell and cross-offshore wind, but the morning is the clear winner.
The next day, the 17th, the swell holds at 7ft, but the wind swings cross-shore, and the period drops to 9 seconds, making it less clean and more bumpy. It’s a drop-off, but still surfable for the die-hards.
So, to sum it up: don’t waste your energy on the first week and a half. Wait for Wednesday the 16th of September. That’s your day. The 3rd of September is a decent appetizer, but the main course is the 16th.
Rusty.
Short Range ForecastHeavy rain (total 55mm), heaviest during Thu morning. Warm (max 29°C on Wed afternoon, min 26°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sat afternoon. Warm (max 29°C on Mon morning, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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) | E 10 | ESE 10 | E 10 | ESE 10 | E 10 | E 10 | N 8 | N 8 | N 9 | N 10 | N 10 | N 10 | N 10 | N 9 | N 9 | N 8 | E 8 | E 11 | E 10 | E 10 |
Wave Graph | ||||||||||||||||||||
1035 | 1299 | 1119 | 680 | 245 | 88 | 72 | 72 | 202 | 282 | 349 | 361 | 313 | 159 | 120 | 82 | 50 | 151 | 196 | 200 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-off | cross-off | off | on | cross | cross | cross-off | cross-off | cross-off |
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 | 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 | 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 | — | 13 | 21 | 4 | 3 | 7 | 4 | 3 | — | 2 | — | 1 | 2 | — | — | — | 1 | — | — | — |
Temp °C | 29 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 29 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 30 | 27 | 31 | 31 | 31 | 30 | 31 | 30 | 32 | 30 | 28 | 30 | 30 | 29 | 32 | 32 | 30 | 31 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 10 | E 10 | ESE 10 | E 10 | S 8 | S 9 | S 10 | N 9 | N 10 | SSW 9 | SSW 8 | N 10 | N 9 | N 9 | N 8 | WNW 7 | NW 7 | E 10 | E 10 |
627 | 1299 | 1119 | 680 | 245 | 173 | 256 | 220 | 202 | 282 | 106 | 122 | 313 | 159 | 120 | 82 | 128 | 67 | 196 | 200 | |
Swell 2 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 11 | SW 12 | N 6 | N 7 | SW 10 | SW 9 | S 8 | SSW 8 | S 8 | E 9 | SSW 8 | S 8 | S 8 | E 8 | E 8 | E 11 | NW 7 | N 8 |
175 | 175 | 215 | 273 | 21 | 51 | 222 | 188 | 144 | 147 | 33 | 27 | 42 | 31 | 30 | 34 | 50 | 151 | 44 | 44 | |
Swell 3 Height (m) Direction Period (s) | E 12 | S 8 | S 8 | N 6 | SW 10 | E 10 | N 8 | N 8 | SW 9 | E 10 | E 10 | E 14 | S 8 | ESE 9 | ESE 8 | SSW 8 | N 8 | N 8 | N 7 | WNW 6 |
26 | 12 | 10 | 26 | 23 | 88 | 72 | 72 | 83 | 30 | 29 | 4 | 31 | 26 | 24 | 19 | 32 | 21 | 17 | 15 | |
Wind waves Height (m) Direction Period (s) | E 10 | — | — | NW 3 | SW 11 | SW 10 | — | SW 9 | — | N 3 | N 10 | N 10 | NNW 10 | NW 6 | WNW 7 | WNW 7 | — | NE 3 | NNE 3 | — |
1035 | — | — | 2 | 534 | 369 | — | 466 | — | 6 | 349 | 361 | 218 | 33 | 81 | 153 | — | 2 | 2 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 618 | 0 | 0 | 33 | 33 | 33 | 24 | 48 | 47 | 13 | 14 | 16 | 0 | 14 | 13 | 13 | 13 | 703 | 670 |
Best forecast wave conditions in Okinawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










