
Surf Forecasts:
Yonabaru surf forecast from 2 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 9PM (local time) - 13ft (4.0m), 18s period, E swell with cross-onshore winds.
- Most powerful swell: Saturday 8 Aug, 12AM (local time) - 34ft (10.5m), 14s period, NNW swell with 39,853 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 9PM (local time) - 13ft (4.0m), 18s 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 Wednesday (Aug 05) at 9PM. The primary swell is predicted to be 4.0m and 18s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 10.5m 14s and forecast to arrive on Saturday (Aug 08) 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 11.0m 15s period and expected on Sunday (Aug 09) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 5th Aug) | 13ft (4.0m) 18s |
| Best Surf | 9PM (Wed 5th Aug) | 13ft (4.0m) 18s |
| Most Powerful | 12AM (Sat 8th Aug) | 34ft (10.5m) 14s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
First off, it’s a grim start. We’ve got a big gap of nothing really worth paddling out for until the morning of Thursday, August 6th. The early days are all low-scoring, with small waves and onshore or cross-onshore wind all over it. Monday and Tuesday are chopped up and messy, and Wednesday sees the swell pushing up to 8ft but with a strong cross-onshore wind, so it’s just a washing machine. Kite surfers might be interested, but for a paddle surfer, it’s a hard pass.
The real standout is Thursday, August 6th at Yonabaru. The swell jumps to 15ft from the east with a very long period of 18 seconds. That’s serious groundswell energy, and the combined energy is a massive 15051 (moderate to strong). The wind is a clean offshore north-northwest at 22 mph. This is proper, heavy surf. But look, 15ft is expert territory – way too big for beginners. The long period and east swell direction aren’t a perfect match for the optimum northeast swell, so it might be a bit straighter than ideal, but the power and the clean conditions will be something else. The water temperature is about average for this time of year.
Friday, August 7th, is even bigger, with 16ft to 28ft swell, but the wind is screaming gale-force. The 28ft wave on Friday afternoon is from the north-northwest, which is a better direction for the break, but the wind is a severe gale. It’s huge, dangerous, and for absolute experts only, if anyone is even game to get out. The combined energy hits 28848 (very strong).
Saturday, August 8th, is a write-off. The wind is hurricane-force, then violent storm force. The swell drops off a cliff to 6ft by the afternoon, but the wind is still at 75 mph. Stay out of the water.
After that, the window slams shut. From Sunday, August 9th, right through to the end of the outlook on August 18th, it’s a long run of weak, small swell and strong, mostly cross-offshore winds. The swell energy drops to single digits and low two-digit numbers. There’s a tiny pulse on Wednesday, August 12th afternoon with 3ft east swell and light offshore wind, but it’s a very average day. The conditions are clean, but the wave is small and ordinary. The last week is a battle with tiny waves and stormy winds, so don’t hold your breath.
So, the call is simple: the only day truly worth marking on the calendar is Thursday, August 6th for the big-swell crew. It’s a solid, powerful, and clean day, but it’s not for the faint-hearted.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon night. Warm (max 31°C on Mon afternoon, min 28°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 327mm), heaviest during Sat morning. Warm (max 31°C on Thu morning, min 28°C on Wed night). Winds increasing (moderate winds from the NNE on Wed night, extremely windy from the NW by Sat afternoon). | ||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 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 16 | ESE 15 | ESE 16 | ESE 16 | E 17 | E 17 | E 17 | ESE 18 | E 18 | E 18 | E 18 | E 18 | E 18 | E 18 | NNW 12 | NNW 14 | NW 12 | NNE 12 | NW 12 |
Wave Graph | |||||||||||||||||||
357 | 392 | 636 | 793 | 1359 | 1769 | 2470 | 3734 | 5281 | 11097 | 14669 | 15939 | 18270 | 13649 | 21529 | 39853 | 10840 | 934 | 1805 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:36PM2.06m | 9:37AM2.00m | 10:07PM2.03m | 10:25AM1.86m | 10:40PM1.99m | 11:23AM1.70m | 11:19PM1.94m | 12:42PM1.57m | 00:09AM1.88m | 2:39PM1.53m | 1:17AM1.84m | 4:26PM1.62m | 2:39AM1.85m | ||||||
Low Tide | 3:37AM0.75m | 3:49PM0.64m | 4:21AM0.74m | 4:23PM0.82m | 5:12AM0.75m | 5:01PM1.01m | 6:16AM0.76m | 5:49PM1.19m | 7:36AM0.75m | 7:05PM1.34m | 9:02AM0.67m | 8:56PM1.39m | |||||||
— | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | |
7:15 | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | |
mm | 1 | — | — | 3 | 1 | 2 | 2 | — | 2 | 1 | — | — | 11 | 13 | 14 | 72 | 118 | 98 | 89 |
Temp °C | 29 | 30 | 31 | 29 | 31 | 30 | 28 | 30 | 31 | 29 | 31 | 30 | 29 | 28 | 28 | 29 | 29 | 29 | 30 |
Feels °C | 33 | 33 | 34 | 32 | 33 | 32 | 32 | 32 | 33 | 30 | 30 | 29 | 26 | 22 | 20 | 20 | 17 | 14 | 25 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 15 | ESE 16 | ESE 16 | E 17 | E 17 | E 17 | ESE 18 | E 18 | E 18 | E 18 | E 18 | E 18 | E 18 | ENE 16 | ENE 14 | E 12 | NNE 12 | NW 12 |
357 | 392 | 636 | 793 | 1359 | 1769 | 2470 | 3734 | 5281 | 11097 | 14669 | 15939 | 18270 | 13649 | 7319 | 3562 | 690 | 934 | 1805 | |
Swell 2 Height (m) Direction Period (s) | ESE 8 | E 8 | SSE 7 | S 7 | SSE 8 | SSE 8 | SE 8 | SSE 8 | — | — | — | — | — | — | — | — | NNE 17 | E 11 | NNE 12 |
14 | 5 | 5 | 4 | 12 | 25 | 14 | 11 | — | — | — | — | — | — | — | — | 307 | 739 | 347 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSE 9 | SE 14 | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | SSE 13 | S 10 | NNE 16 |
13 | 8 | 8 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 60 | 452 | 223 | |
Wind waves Height (m) Direction Period (s) | — | NNE 3 | WNW 7 | N 4 | SE 8 | — | SE 8 | NE 5 | ESE 7 | — | N 7 | N 8 | N 9 | NNW 11 | NNW 12 | NNW 14 | NW 12 | WNW 11 | SW 12 |
— | 4 | 5 | 10 | 21 | — | 20 | 25 | 30 | — | 382 | 826 | 2581 | 8735 | 21529 | 39853 | 10840 | 5810 | 12348 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 12 | 47 | 16 | 48 | 14 | 14 | 17 | 17 | 727 | 607 | 760 | 727 | 607 | 1309 | 727 | 727 | 765 | 727 | 81 |
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.











