Surf Forecasts:
Yonabaru surf forecast from 22 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s period, ESE swell with cross-shore winds.
- Most powerful swell: Tuesday 25 Aug, 12PM (local time) - 13ft (4.0m), 17s period, ESE swell with 9,088 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s period with ESE 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 Tuesday (Aug 25) at 6AM. 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 4.0m 17s and forecast to arrive on Tuesday (Aug 25) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 10s period and expected on Wednesday (Aug 26) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 25th Aug) | 11ft (3.5m) 17s |
| Best Surf | 6AM (Tue 25th Aug) | 11ft (3.5m) 17s |
| Most Powerful | 12PM (Tue 25th Aug) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, Rusty here, let's talk about what's shaping up for Yonabaru over the next couple of weeks. Honestly, it’s a pretty tough stretch for paddle surfing. The water's sitting at about 84°, which is pretty much bang on for this time of year, so no shock there.
We start off with nothing to get excited about. Saturday the 22nd is a write-off – a tiny 0.7 ft ESE swell with a cross-shore wind and a risk of thunderstorms. The energy is weak, only 18, and it's just a mess. Sunday the 23rd is flat and poor, and Monday the 24th brings a bit more size but with onshore winds and a swell direction that’s not playing ball. The energy on Monday morning is moderate at 408, but the wind kills it. Monday afternoon sees a jump to a 4 ft swell with a very long 15-second period, and the energy is up to 765, but it's still onshore and messy. Not worth paddling out.
Now, Tuesday the 25th is the one that gets your attention, but only if you're an expert. The morning shows a massive 12 ft ESE swell with a 17-second period – that's a serious groundswell with massive energy (7597). The wind is a light cross-shore from the NNE. It's just way too big. The afternoon ramps up even more to a 13 ft swell, with moderate cross-offshore winds from the North making it look clean. The energy is an intense 8262. This is a heavy, powerful setup that will be breaking straight at this beach, so save it for the chargers. Beginners and most intermediates should stay well clear.
The day after, Wednesday the 26th, the swell drops fast. The morning is still a chunky 7 ft from the NNE with a cross-offshore wind, but a strong breeze of 25 mph makes it tricky. The energy is still strong at 2005. The afternoon drops to 3 ft, and while the wind goes pure offshore from the WNW, it's blowing a strong 25 mph, making it incredibly difficult to paddle into. You'd be getting blown off your board.
From Thursday the 27th through to the end of the forecast on September 6th, it’s almost all grim. We've got a long gap of poor conditions. There's a mix of tiny swells, onshore winds, gale-force gusts, and stormy weather. The energy levels are low, mostly under 500, and the wave comments are consistently "poor surf conditions." There's a slight bump on September 1st and 2nd, with swell heights reaching 5 ft to 8 ft, but the wind is onshore or cross-onshore with moderate chop, and the energy, while up to 2032, doesn't overcome the wind. By September 3rd and 4th, we’re back to dangerous, blown-out conditions with massive swell (up to 20 ft) and near-gale force winds. The setup looks far more interesting for kite surfing than paddle surfing during that storm. After that, it fades to flatness.
So look, if you’re a seasoned charger with a big gun, Tuesday the 25th is the standout, but it’s a beast. For everyone else, this is a blank run of nearly two weeks, and I’d be looking for a different hobby until it settles.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat afternoon. Warm (max 30°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 229mm), heaviest during Thu morning. Warm (max 29°C on Tue afternoon, min 27°C on Tue night). Winds increasing (moderate winds from the N on Tue afternoon, severe gales from the SW by Thu morning). | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | ESE 11 | ESE 10 | ESE 10 | ESE 5 | SE 12 | SE 16 | ESE 15 | ESE 18 | ESE 17 | ESE 16 | E 15 | NNE 12 | ENE 10 | E 9 | E 13 | ESE 10 | ENE 16 | E 12 | E 15 | ESE 8 |
Wave Graph | ||||||||||||||||||||
12 | 35 | 31 | 22 | 38 | 251 | 693 | 3903 | 7597 | 8143 | 4902 | 1135 | 177 | 63 | 83 | 173 | 25 | 25 | 38 | 65 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | cross-on | on | on | on | cross-on | cross | cross-off | cross-off | cross-off | off | off | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:38PM1.57m | 1:38AM1.79m | 4:55PM1.69m | 3:12AM1.83m | 5:37PM1.81m | 4:23AM1.93m | 6:10PM1.92m | 5:17AM2.04m | 6:38PM2.01m | 6:03AM2.14m | 7:05PM2.07m | 6:44AM2.21m | 7:32PM2.12m | |||||||
Low Tide | 7:49PM1.42m | 9:29AM0.65m | 9:46PM1.39m | 10:33AM0.53m | 10:52PM1.26m | 11:22AM0.42m | 11:37PM1.12m | 12:03PM0.34m | 00:15AM0.96m | 12:39PM0.31m | 00:49AM0.82m | 1:12PM0.32m | 1:22AM0.69m | |||||||
— | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | |
mm | 2 | — | — | 1 | — | 1 | — | — | — | — | 4 | 2 | 2 | 9 | 131 | 72 | 6 | 3 | — | — |
Temp °C | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 30 | 29 | 28 | 29 | 29 | 28 | 27 | 27 | 28 | 29 | 29 | 28 |
Feels °C | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 30 | 33 | 31 | 29 | 27 | 28 | 27 | 19 | 22 | 27 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 9 | SW 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | ESE 15 | ESE 18 | ESE 17 | ESE 16 | E 15 | NNE 12 | E 10 | WNW 11 | E 13 | ESE 10 | WSW 12 | WSW 12 | SSW 12 | SSW 9 |
6 | 471 | 637 | 411 | 261 | 172 | 693 | 3903 | 7597 | 8143 | 4902 | 1135 | 106 | 2306 | 83 | 173 | 2262 | 1082 | 2205 | 466 | |
Swell 2 Height (m) Direction Period (s) | ESE 11 | ESE 10 | ESE 10 | SE 10 | SE 12 | SE 16 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 9 | N 11 | ENE 10 | E 9 | E 18 | E 18 | E 16 | E 12 | E 12 | WSW 11 |
12 | 35 | 31 | 14 | 38 | 251 | 119 | 99 | 64 | 47 | 65 | 720 | 177 | 63 | 7 | 6 | 5 | 25 | 25 | 247 | |
Swell 3 Height (m) Direction Period (s) | — | SE 10 | ESE 14 | E 9 | E 9 | SSE 9 | ENE 11 | ENE 10 | — | — | — | ESE 12 | SE 10 | E 13 | SE 10 | E 18 | ENE 16 | E 15 | E 15 | E 13 |
— | 25 | 20 | 13 | 14 | 7 | 22 | 19 | — | — | — | 150 | 16 | 32 | 17 | 25 | 25 | 18 | 38 | 31 | |
Wind waves Height (m) Direction Period (s) | S 10 | SSE 6 | ESE 4 | ESE 5 | ESE 5 | E 11 | E 6 | E 6 | — | N 6 | N 8 | W 8 | W 11 | SSW 9 | SW 11 | SW 12 | S 9 | S 9 | SE 10 | ESE 8 |
1161 | 80 | 14 | 22 | 28 | 157 | 50 | 86 | — | 119 | 784 | 2432 | 5652 | 1949 | 6236 | 6769 | 1579 | 859 | 14 | 65 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 607 | 607 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 607 | 760 | 727 | 607 | 760 | 727 | 727 | 820 | 76 | 13 |
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.











