Surf Forecasts:
Yonabaru surf forecast from 19 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 9AM (local time) - 10ft (3.0m), 16s period, ESE swell with 4,645 kJ wave energy.
Best Forecast Surf Conditions for Yonabaru this week:
The most powerful waves expected at Yonabaru in the next 16 days are 3.0m 16s and forecast to arrive on Wednesday (Aug 26) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 11s period and expected on Saturday (Aug 22) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Wed 26th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a look at what we've got on the cards for the next couple of weeks.
Honestly, it’s a rough start. For the first week, from Wednesday the 19th all the way through to Monday the 31st, the surf is mostly a write-off. We’re looking at a solid gap of nearly a week and a half of pretty ordinary conditions. There are a few small pulses of swell, but the wind is all over the shop – mostly onshore or cross-onshore with a lot of stormy weather, making for messy, choppy surf. Anyone hoping to get wet is going to be left frustrated.
The only real glimmer in that first week comes around the morning of Wednesday the 26th of August at Yonabaru. We’ve got a solid 10ft swell pushing in from the ESE with a long 16-second period – that’s proper groundswell energy. The combined energy is a massive 4645, so there’s plenty of water moving around. The wind shifts to a cross-offshore from the NNW, cleaning things up nicely. The catch? This is a beginner spot, and at 10ft, that’s too big for beginners. It’s also fairly exposed, so it’s going to be a big, powerful ocean. This is one for experienced surfers only, and even then, it’s a marginal call due to the size.
After that, the wind gets better. Thursday the 27th of August sees another solid morning with 8ft swell from the E, still with a long 14-second period and a fresh offshore wind from the W. That’s clean, but again, at 8ft, it’s pushing into expert territory at this break. Energy is strong at 2923.
The real standout, though, is shaping up for the morning of Saturday the 29th of August. We’ve got 6ft of swell from the NNW with a 10-second period and a light cross-shore breeze from the S. But the afternoon is where it’s at: the wind goes glassy from the SE, and the swell drops to a cleaner 5ft. This is about as good as it gets for Yonabaru – clean, glassy conditions with a decent 5ft swell. The combined energy is a moderate 623, so it’s not a massive day, but it will be fun and clean. This is the best bet of the whole outlook.
Looking further out, there’s some serious size on the horizon for the start of September, but it’s all too big for this break. From Tuesday the 1st of September, we’re looking at 13ft to 18ft swells with moderate cross-offshore winds. That’s monster surf for Yonabaru. The combined energy jumps into the thousands (over 7000), but the finder notes that it’s simply too big. This setup looks more interesting for kite surfing than paddle surfing. If you’re an expert, maybe roll the dice on that Wednesday the 26th or Thursday the 27th, but for everyone else, hold out for that glassy Saturday afternoon on the 29th of August.
Rusty.
Short Range ForecastHeavy rain (total 34mm), heaviest during Fri afternoon. Warm (max 28°C on Wed morning, min 26°C on Thu night). Winds increasing (moderate winds from the SE on Wed night, near gales from the SE by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Sat morning. Warm (max 29°C on Sat afternoon, min 26°C on Sat morning). Winds decreasing (near gales from the ESE on Sat afternoon, moderate winds from the ESE by Mon night). | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | E 7 | E 7 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 9 | ENE 9 | SSE 10 | E 16 | SSE 10 | SSE 11 | ENE 13 | ESE 16 | E 7 | ESE 16 | ESE 16 | ESE 16 | ESE 16 |
Wave Graph | |||||||||||||||||||||
238 | 311 | 318 | 232 | 158 | 214 | 290 | 419 | 0 | 8 | 0 | 5 | 0 | 0 | 17 | 104 | 293 | 666 | 1667 | 2033 | 3931 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | on | on | on | cross |
High Tide | 10:40AM1.79m | 10:31PM1.99m | 11:45AM1.63m | 11:12PM1.91m | 1:25PM1.53m | 00:10AM1.84m | 3:38PM1.57m | 1:38AM1.79m | 4:55PM1.69m | 3:12AM1.83m | 5:37PM1.81m | 4:23AM1.93m | 6:10PM1.92m | ||||||||
Low Tide | 4:20PM0.97m | 5:20AM0.70m | 4:58PM1.15m | 6:30AM0.74m | 5:55PM1.32m | 8:02AM0.73m | 7:49PM1.42m | 9:29AM0.65m | 9:46PM1.39m | 10:33AM0.53m | 10:52PM1.26m | 11:22AM0.42m | 11:37PM1.12m | ||||||||
6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | |
mm | 2 | 1 | 6 | 4 | 3 | 5 | 2 | 4 | 7 | 3 | 1 | 5 | 2 | 3 | 2 | 2 | 2 | 2 | 1 | 3 | 3 |
Temp °C | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 26 | 28 | 29 | 27 | 28 | 27 | 27 | 27 | 26 | 27 | 28 | 29 | 27 |
Feels °C | 30 | 30 | 30 | 28 | 29 | 26 | 26 | 27 | 24 | 27 | 27 | 24 | 27 | 26 | 26 | 26 | 24 | 28 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 8 | S 8 | S 8 | S 9 | S 9 | S 9 | SW 8 | SSW 8 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 11 | SW 11 | SW 10 | SSE 9 | SSE 8 | ESE 16 | ESE 16 | ESE 16 |
18 | 10 | 35 | 111 | 225 | 184 | 105 | 123 | 134 | 148 | 129 | 160 | 129 | 90 | 90 | 80 | 653 | 246 | 1667 | 2033 | 3931 | |
Swell 2 Height (m) Direction Period (s) | S 8 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | S 8 | S 8 | — | ENE 9 | — | E 16 | — | — | ENE 13 | ESE 16 | SW 10 | ESE 16 | S 9 | SSW 10 | SSW 9 |
5 | 10 | 11 | 12 | 12 | 20 | 89 | 65 | — | 8 | — | 5 | — | — | 17 | 104 | 76 | 666 | 251 | 96 | 100 | |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | SW 8 | SW 9 | ENE 8 | SW 9 | E 9 | SW 10 | — | — | — | — | — | — | ENE 13 | ENE 11 | SW 10 | SSW 10 | SW 10 | SSE 7 | — |
1 | 1 | 24 | 27 | 28 | 51 | 2 | 17 | — | — | — | — | — | — | 17 | 25 | 96 | 65 | 74 | 15 | — | |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 9 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | SE 10 | SSE 10 | E 7 | E 7 | E 7 | E 7 | — |
238 | 311 | 318 | 232 | 158 | 214 | 290 | 419 | 1819 | 1480 | 2851 | 2923 | 1874 | 2885 | 1567 | 1956 | 293 | 240 | 286 | 321 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 670 | 839 | 13 | 607 | 13 | 599 | 607 | 670 | 607 | 618 | 607 | 607 | 599 | 622 | 670 | 607 | 792 | 616 | 14 | 14 | 13 |
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.











