Surf Forecasts:
Yonabaru surf forecast from 5 Aug 2026:
- Best quality surf: Thursday 6 Aug, 12AM (local time) - 11ft (3.5m), 17s period, E swell with cross-shore winds.
- Most powerful swell: Friday 7 Aug, 3PM (local time) - 30ft (9.0m), 12s period, NW swell with 25,150 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 12AM (local time) - 11ft (3.5m), 17s 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 (Aug 06) at 12AM. The primary swell is predicted to be 3.5m and 17s period. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 9.0m 12s and forecast to arrive on Friday (Aug 07) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 11.0m 14s period and expected on Saturday (Aug 08) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 6th Aug) | 11ft (3.5m) 17s |
| Best Surf | 12AM (Thu 6th Aug) | 11ft (3.5m) 17s |
| Most Powerful | 3PM (Fri 7th Aug) | 30ft (9.0m) 12s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
Right off the bat, I gotta be straight with you – this 16-day window is a tough one for Yonabaru. The first real chance of anything worth paddling out for doesn’t show up until way down the line. There’s a big gap of nothing but poor conditions and dangerous wind from the start until the second week. The early action is all blown out, way too big, or just plain messy.
The first glimmer of something decent appears on the morning of Thursday, 13th August. We’re looking at a tiny piece of swell – 3ft from the ENE – with a period of 10 seconds. The wind is light off the water from the WSW at 3 mph, making it clean. The combined energy is weak (224), so it’s not going to be a world-beater, but for a beginner-friendly spot, it’s surfable. The water is a touch warmer than normal at 87°F.
Then, the standout. The morning of Saturday, 15th August, is your best bet. It’s a small, clean day with a 2ft swell from the east, with a period of 11 seconds. The wind is offshore from the WNW at 16 mph (moderate breeze), keeping the surface clean. It’s not powerful, but for a clean, consistent wave at a spot that’s fairly exposed, it’s the pick of the litter. The crowd situation is “sometimes,” so you might have company, but it’s a good, mellow option.
Other than that, the rest of the run is a write-off. The 19th of August shows a 7ft swell from the ENE, but with a 16 mph cross-shore wind, it’s going to be a lumpy, choppy mess. The 20th and beyond are just more of the same: small, weak, and blown out.
So, to sum it up: the 16-day forecast is a desert with one small, clean oasis. The 13th is a goer for a beginner, but the 15th is the session to circle. It’s not a classic, but it’s the best we’ve got.
Rusty.
Short Range ForecastHeavy rain (total 207mm), heaviest during Fri afternoon. Warm (max 31°C on Thu morning, min 28°C on Wed night). Winds increasing (light winds from the NNE on Wed night, extremely windy from the NW by Fri afternoon). | Days 5-7 Weather SummaryHeavy rain (total 395mm), heaviest during Sat night. Warm (max 30°C on Mon afternoon, min 28°C on Sat afternoon). Winds decreasing (extremely windy from the S on Sat afternoon, moderate winds from the SSW by Mon night). | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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 17 | E 17 | E 17 | E 17 | E 17 | E 17 | NW 12 | NW 11 | ENE 11 | ENE 11 | ENE 15 | E 10 | ENE 14 | E 14 | E 14 | E 14 | E 13 | E 12 | S 11 | E 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3691 | 6711 | 7889 | 11282 | 14096 | 13398 | 25150 | 1655 | 133 | 91 | 43 | 98 | 70 | 131 | 242 | 242 | 212 | 143 | 0 | 101 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:19PM1.94m | 12:42PM1.57m | 00:09AM1.88m | 2:39PM1.53m | 1:17AM1.84m | 4:26PM1.62m | 2:39AM1.85m | 5:27PM1.74m | 3:54AM1.92m | 6:07PM1.86m | 4:54AM2.01m | 6:39PM1.95m | ||||||||
Low Tide | 5:01PM1.01m | 6:16AM0.76m | 5:49PM1.19m | 7:36AM0.75m | 7:05PM1.34m | 9:02AM0.67m | 8:56PM1.39m | 10:14AM0.55m | 10:23PM1.34m | 11:08AM0.43m | 11:20PM1.24m | 11:53AM0.33m | 00:03AM1.12m | |||||||
 |  |  | |  | | |  | | |  | |  | | | |  | | | | |
 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — |
mm | 4 | — | — | — | 9 | 42 | 122 | 12 | 18 | 64 | 252 | 55 | 7 | 10 | 4 | 1 | — | 2 | 2 | 1 |
Temp °C | 30 | 29 | 31 | 30 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 30 | 29 | 30 | 30 | 29 |
Feels °C | 33 | 29 | 30 | 28 | 25 | 19 | 28 | 30 | 26 | 16 | 13 | 17 | 20 | 22 | 26 | 30 | 31 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | E 17 | E 17 | E 17 | E 17 | E 17 | E 17 | E 14 | NW 11 | ENE 11 | ENE 11 | ENE 15 | WSW 15 | E 14 | W 15 | W 14 | W 13 | W 11 | SW 11 | S 11 | SW 11 |
| kJ | 3691 | 6711 | 7889 | 11282 | 14096 | 13398 | 1590 | 1655 | 133 | 91 | 43 | 8175 | 37 | 6508 | 3050 | 2103 | 726 | 534 | 1089 | 479 |
Swell 2 Height (m) Direction Period (s) | S 7 | — | — | — | — | — | NNE 13 | NNE 11 | — | — | ENE 15 | E 10 | E 10 | E 14 | E 14 | E 14 | E 13 | W 10 | SW 11 | W 9 |
| kJ | 17 | — | — | — | — | — | 1093 | 335 | — | — | 43 | 98 | 50 | 131 | 242 | 242 | 212 | 273 | 568 | 140 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | ENE 14 | — | — | — | ENE 15 | ENE 14 | — | — | — | ENE 9 | E 12 | W 9 | E 12 |
| kJ | — | — | — | — | — | — | — | 62 | — | — | — | 42 | 70 | — | — | — | 30 | 143 | 130 | 101 |
Wind waves Height (m) Direction Period (s) | SE 7 | — | NNE 6 | N 7 | N 9 | NNW 11 | NW 12 | SSW 11 | S 14 | S 16 | SSW 15 | SSW 14 | SSW 14 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | S 11 | — | S 10 |
| kJ | 27 | — | 272 | 670 | 2308 | 11456 | 25150 | 7790 | 48215 | 55634 | 34189 | 26095 | 21828 | 7062 | 4483 | 3910 | 3264 | 1625 | — | 722 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 47 | 599 | 785 | 785 | 607 | 1309 | 727 | 727 | 765 | 727 | 727 | 765 | 619 | 727 | 618 | 616 | 607 | 607 | 599 | 78 |
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.
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