Surf Forecasts:
Yonabaru surf forecast from 26 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 12AM (local time) - 8ft (2.4m), 12s period, ESE swell with 1,543 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 2.4m 12s and forecast to arrive on Wednesday (Sep 02) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Wednesday (Aug 26) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12AM (Wed 2nd Sep) | 8ft (2.4m) 12s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Rusty here again, same outlook, just in feet and miles.
Let’s be straight – this is a quiet spell for Yonabaru. There’s nothing worth paddling out for in the first week. The first half-decent chance doesn’t show up until Friday, September 4th, and even then it’s just marginal. That’s more than a week of waiting.
The only break in the game is Yonabaru, a beginner-friendly spot that breaks fairly consistently, with a preference for swell from the NE. Water temp is 84°F, about normal for this time of year – nothing unusual.
Wednesday, August 26th is a washout. Storm risk, cross-off winds at 28 mph, and a messy 6ft swell from the NNW. Combined energy is moderate at 744, but it’s all windblown. Nothing doing.
Through the rest of August and into early September, it’s the same pattern – onshore or cross-onshore winds, gusty, with junk surf. On Tuesday, September 1st afternoon, there’s a solid 8ft ESE swell with a 12-second period, but the wind is howling at 28 mph from the ENE – totally blown out. The combined energy is very strong at 1755, but you’d need a kite, not a surfboard.
Wednesday, September 2nd is a write-off – severe gale with 47 mph cross-onshore winds and a 7ft swell in the morning, then 12ft from the NNW with near gale conditions in the afternoon. Expert-only and even then, no fun.
The turnaround starts on Thursday, September 3rd afternoon. The wind drops to a cross-off 22 mph from the south, and we get a 8ft NNW swell with an 11-second period. Clean conditions and a combined energy of 1291. This is the first real standout.
The best bet is Friday, September 4th morning. A 6ft NNW swell with a 12-second period – that’s real groundswell energy – and a moderate cross-shore wind at 16 mph from the SSE. Combined energy is 936. It’s only marginal, but it’s as good as it gets. The long period will give better shape, though at a beach break it might be a bit straight. Still, your best chance.
After that, it’s back to poor conditions. Sunday, September 6th has a 4ft NW swell with onshore winds, and by Tuesday, September 8th, we’re in lumpy cross-chop again. Thursday, September 10th ends the run with 10ft ESE swell and near gale winds – fully blown out.
Bottom line: wait for Friday, September 4th. It’s not a classic, but it’s the only window that might give you a few clean ones. For the beginners, that 6ft swell is a bit big, but the wind might help. Check back nearer the time.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Wed morning. Warm (max 30°C on Thu morning, min 27°C on Wed morning). Winds decreasing (strong winds from the SW on Wed morning, light winds from the S by Thu morning). | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Mon morning. Warm (max 29°C on Sat morning, min 27°C on Sat night). Mainly strong winds. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | NNW 9 | ESE 9 | E 13 | E 13 | E 7 | SE 7 | SE 6 | SE 6 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 9 | ESE 9 | ESE 12 | ESE 10 | ESE 10 | ESE 12 | ESE 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 591 | 65 | 55 | 53 | 25 | 194 | 161 | 164 | 269 | 178 | 163 | 155 | 169 | 219 | 297 | 258 | 844 | 678 | 667 | 1406 | 1543 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:38PM2.01m | 6:03AM2.14m | 7:05PM2.07m | 6:44AM2.21m | 7:32PM2.12m | 7:23AM2.23m | 7:57PM2.14m | 8:01AM2.21m | 8:23PM2.15m | 8:39AM2.14m | 8:50PM2.13m | 9:20AM2.02m | 9:18PM2.09m | ||||||||
Low Tide | 12:03PM0.34m | 00:15AM0.96m | 12:39PM0.31m | 00:49AM0.82m | 1:12PM0.32m | 1:22AM0.69m | 1:44PM0.38m | 1:56AM0.60m | 2:14PM0.48m | 2:31AM0.54m | 2:44PM0.61m | 3:07AM0.52m | 3:14PM0.77m | ||||||||
 | |  | | | |  | |  | | | |  | | | | | | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | 6 | 1 | 1 | 2 | 1 | 2 | — | — | — | — | — | — | — | — | 3 | 3 | 4 | 5 | 22 | 31 | 48 |
Temp °C | 29 | 29 | 28 | 30 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 28 |
Feels °C | 28 | 29 | 30 | 32 | 32 | 31 | 30 | 30 | 30 | 31 | 31 | 30 | 29 | 29 | 28 | 27 | 28 | 27 | 27 | 26 | 20 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | WNW 9 | WNW 10 | W 10 | W 10 | W 10 | W 10 | SW 9 | SW 9 | SSW 9 | SSW 9 | S 9 | SSW 8 | SSW 8 | SSW 9 | ESE 9 | ESE 12 | ESE 10 | ESE 10 | ESE 12 | ESE 12 |
| kJ | 591 | 535 | 671 | 541 | 458 | 402 | 192 | 115 | 123 | 145 | 96 | 64 | 103 | 80 | 86 | 258 | 844 | 678 | 667 | 1406 | 1543 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 9 | E 8 | E 7 | SW 8 | SW 9 | SW 9 | W 9 | W 8 | E 13 | E 13 | SW 9 | E 12 | E 12 | E 11 | S 10 | S 9 | SSW 10 | ESE 13 | S 10 | S 10 |
| kJ | 136 | 65 | 33 | 27 | 118 | 76 | 115 | 80 | 34 | 55 | 53 | 59 | 45 | 44 | 39 | 47 | 39 | 32 | 106 | 108 | 98 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 14 | E 13 | E 13 | E 7 | E 12 | E 12 | S 7 | E 13 | W 8 | W 7 | E 12 | W 6 | ENE 12 | SW 8 | SW 9 | SW 10 | SW 10 | S 10 | SW 10 | SW 10 |
| kJ | 17 | 35 | 55 | 53 | 25 | 26 | 25 | 17 | 32 | 10 | 4 | 47 | 1 | 79 | 25 | 30 | 37 | 25 | 73 | 15 | 15 |
Wind waves Height (m) Direction Period (s) | WSW 8 | SSW 7 | SSW 5 | SSW 8 | S 4 | SE 7 | SE 6 | SE 6 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 9 | NE 4 | NE 5 | NNE 6 | NNE 6 | NNE 7 | N 7 |
| kJ | 1014 | 531 | 133 | 197 | 22 | 194 | 161 | 164 | 269 | 178 | 163 | 155 | 169 | 219 | 297 | 31 | 41 | 122 | 315 | 349 | 508 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 607 | 599 | 607 | 13 | 616 | 10 | 13 | 820 | 13 | 13 | 13 | 16 | 672 | 794 | 607 | 670 | 670 | 727 | 820 | 727 | 727 |
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)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Yonabaru surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest