Surf Forecasts:
Yonabaru surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 12PM (local time) - 2ft (0.6m), 11s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 12PM (local time) - 2.5ft (0.8m), 12s period, E swell with 178 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 12PM (local time) - 2ft (0.6m), 11s 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 12) at 12PM. The primary swell is predicted to be 0.6m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 0.8m 12s and forecast to arrive on Tuesday (Aug 11) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 9s period and expected on Tuesday (Aug 11) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Best Surf | 12PM (Wed 12th Aug) | 2ft (0.6m) 11s |
| Most Powerful | 12PM (Tue 11th Aug) | 2.5ft (0.8m) 12s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Right, folks. Rusty here. Gotta be straight with you – this is a tough one. The next couple of weeks are looking pretty grim for a paddle.
The only spot on the radar is Yonabaru, a beginner-friendly break that's fairly consistent. The water temp is sitting at 85°, which is pretty much average for this time of year – no surprises there. The trouble is, for almost the entire 16-day window, we’re getting poor surf conditions. There’s a long stretch of nothing worthwhile from now until Wednesday the 20th of August, with only one tiny glimmer of hope.
Let’s walk through it. Starting on Tuesday the 11th of August, we've got tiny, weak swell (combined energy of all swells directed here at 219) out of the east at 3ft, but a mean cross-on shore wind from the south-east is making it choppy and poor. That’s the story for days. Wave heights drop even lower, and the wind keeps misbehaving.
The one moment that almost counts is Wednesday afternoon, the 12th of August. We get a bit of offshore wind from the west, and the conditions clean right up. The swell is still tiny at 2ft from the east, and the energy is weak (94), but it’s surfable. If you’re desperate for a splash, that’s your window, but don’t expect any power.
After that, it’s back to onshore winds and flatness for over a week. There is a pulse of energy forecast for Thursday morning the 20th of August – the combined energy of all swells directed here jumps to 762, with a 8ft swell from the south-east. But the period is a short 8 seconds, and it’s being hammered by a fresh cross-on shore wind at 22 mph. The setup looks more interesting for kite surfing than paddle surfing. Definitely not one for beginners.
The rest of the month is more of the same: onshore winds, messy seas, and very little to get excited about. A few readings show no swell at all.
So, to be honest, there’s no standout session here. The forecast can change, but right now, this is a blank run. Hang tight.
Rusty.
Short Range ForecastHeavy rain (total 62mm), heaviest during Wed afternoon. Warm (max 30°C on Tue morning, min 25°C on Wed afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sun afternoon. Warm (max 29°C on Fri afternoon, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 12 | E 12 | E 12 | E 11 | E 11 | E 10 | E 10 | E 10 | ENE 10 | E 10 | E 10 | SSW 8 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 181 | 136 | 134 | 84 | 83 | 51 | 73 | 51 | 34 | 31 | 30 | 0 | 61 | 59 | 74 | 73 | 73 | 50 | 49 | 52 | 80 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | on | on | on | cross-on | on | on | on | on | on | on |
High Tide | 6:39PM1.95m | 5:43AM2.11m | 7:09PM2.03m | 6:27AM2.18m | 7:37PM2.08m | 7:08AM2.22m | 8:05PM2.11m | 7:48AM2.22m | 8:32PM2.12m | 8:27AM2.17m | 8:59PM2.11m | 9:07AM2.08m | 9:27PM2.09m | ||||||||
Low Tide | 11:53AM0.33m | 00:03AM1.12m | 12:32PM0.26m | 00:41AM0.99m | 1:07PM0.25m | 1:17AM0.87m | 1:41PM0.28m | 1:51AM0.76m | 2:13PM0.35m | 2:26AM0.69m | 2:45PM0.47m | 3:02AM0.64m | 3:16PM0.62m | ||||||||
 |  |  | | |  | | | | | |  | |  |  | |  | | | | | |
 | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | — | 1 | 5 | 14 | 30 | 1 | 5 | 1 | 5 | 2 | 1 | — | — | — | — | — | 2 | 1 | 3 | 4 | — |
Temp °C | 30 | 30 | 28 | 26 | 26 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 27 |
Feels °C | 34 | 34 | 33 | 29 | 32 | 31 | 31 | 30 | 31 | 32 | 32 | 31 | 33 | 32 | 33 | 33 | 32 | 32 | 31 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | SSW 9 | S 9 | SSW 9 | S 8 | SW 8 | SW 8 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SW 9 | SSW 9 | SW 9 | SW 9 | SSW 9 |
| kJ | 490 | 356 | 360 | 196 | 232 | 138 | 100 | 100 | 199 | 194 | 137 | 88 | 160 | 117 | 161 | 165 | 112 | 138 | 107 | 115 | 99 |
Swell 2 Height (m) Direction Period (s) | E 12 | SW 10 | E 12 | SW 9 | E 11 | SW 9 | S 9 | S 8 | ENE 10 | E 10 | E 10 | S 9 | E 11 | S 9 | E 10 | E 10 | S 8 | S 8 | S 8 | E 10 | E 10 |
| kJ | 181 | 115 | 134 | 132 | 83 | 78 | 97 | 66 | 34 | 31 | 30 | 54 | 61 | 42 | 74 | 73 | 57 | 46 | 55 | 52 | 80 |
Swell 3 Height (m) Direction Period (s) | E 6 | E 12 | E 6 | E 11 | E 6 | E 10 | E 10 | E 10 | N 7 | N 7 | SSE 8 | WNW 5 | E 6 | E 11 | S 8 | SE 11 | E 10 | E 10 | E 10 | S 8 | S 7 |
| kJ | 38 | 136 | 27 | 84 | 11 | 51 | 73 | 51 | 9 | 4 | 13 | 5 | 6 | 59 | 35 | 5 | 73 | 50 | 49 | 28 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 3 | — | — | — | NW 2 | WNW 6 | WNW 6 | WNW 6 | — | — | — | — | SSE 8 | SE 3 | ESE 4 | ESE 4 | ESE 5 | ESE 5 |
| kJ | — | — | — | 3 | — | — | — | 2 | 98 | 47 | 29 | — | — | — | — | 39 | 2 | 13 | 12 | 23 | 46 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 10 | 10 | 10 | 0 | 12 | 14 | 16 | 13 | 13 | 13 | 13 | 10 | 10 | 10 | 10 | 13 | 13 | 13 | 13 | 13 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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