Surf Forecasts:
Yonabaru surf forecast from 30 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 3PM (local time) - 11ft (3.5m), 19s period, E swell with cross-shore winds.
- Most powerful swell: Thursday 6 Aug, 9AM (local time) - 18ft (5.5m), 20s period, E swell with 23,382 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 3AM (local time) - 1ft (0.3m), 18s 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 Sunday (Aug 02) at 3AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.3m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 5.5m 20s and forecast to arrive on Thursday (Aug 06) 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 7.5m 12s period and expected on Friday (Aug 07) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 2nd Aug) | 1ft (0.3m) 18s |
| Best Surf | 3PM (Wed 5th Aug) | 11ft (3.5m) 19s |
| Most Powerful | 9AM (Thu 6th Aug) | 18ft (5.5m) 20s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
Right off the bat, we're looking at a flat spell. For the first few days, the swell is tiny, barely a bump. The water is sitting at 86°, which is a touch warmer than normal for this time of year at Yonabaru. It's not until the morning of Sunday, the 2nd of August, that we see a pulse of energy start to build, but even then, it's just small, surfable waves with very ordinary conditions. The combined energy is a weak 98, so nothing to get excited about.
Things start to build through Monday the 3rd, with the swell pushing up to 3ft from the ESE with a period of 15 seconds, and the combined energy jumping to 408. The wind is a cross-shore, which keeps things a bit bumpy, but we're getting closer. By Tuesday the 4th, the swell is up to 5ft from the ESE, and the period is a very long 18 seconds. The energy is strong at 1652, but the wind is a cross-shore, creating a slight chop. This is where the size starts to get a bit much for a beginner.
The standout looks like the morning of Wednesday the 5th of August. The swell is 8ft from the E with that 18-second period, and the combined energy is a massive 4867. The wind is a moderate cross-onshore, which is a bit messy, but it's the biggest pulse of the week. If you're an expert, this is the one to look at, but it's a big, powerful groundswell that will be demanding.
The 6th of August sees a huge spike, but it's way too big for Yonabaru. The wind is a gale, so honestly, forget about it. After that, the swell drops off a cliff and the wind turns nasty, with severe gales and storms. There's a blank run from the 7th through the 11th, with nothing but poor conditions and small, messy waves.
We get a glimmer of hope on the morning of Wednesday the 12th of August. The swell is 6ft from the E with a 12-second period, and the combined energy is 898. The wind is a light cross-shore, which is manageable. The morning of the 13th of August is the best of the second week. The swell is 5ft from the E with a 13-second period, and the wind is a glassy cross-offshore. The energy is 623, and it's clean. This is a proper window for a decent session, but it's a long way out, so keep an eye on it.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 30°C on Fri morning, min 27°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Wed night. Warm (max 31°C on Mon afternoon, min 28°C on Mon night). Winds increasing (light winds from the N on Mon morning, near gales from the NNW by Wed night). | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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) | ESE 9 | SE 9 | E 9 | SE 10 | SE 10 | SE 9 | ESE 16 | ESE 17 | ESE 16 | ESE 15 | ESE 16 | ESE 18 | ESE 18 | E 18 | E 18 | E 18 | E 19 | E 19 | E 20 | E 18 | NNW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 13 | 6 | 16 | 17 | 13 | 48 | 168 | 357 | 392 | 520 | 1136 | 1652 | 2627 | 3424 | 4839 | 8448 | 13484 | 23382 | 11183 | 4374 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | cross-off | cross-off | glassy | cross-off | cross-off | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:37PM2.08m | 8:13AM2.18m | 9:06PM2.08m | 8:54AM2.11m | 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 | ||||||||
Low Tide | 2:10PM0.25m | 2:20AM0.84m | 2:43PM0.35m | 2:57AM0.78m | 3:16PM0.48m | 3:37AM0.75m | 3:49PM0.64m | 4:21AM0.74m | 4:23PM0.82m | 5:12AM0.75m | 5:01PM1.01m | 6:16AM0.76m | 5:49PM1.19m | ||||||||
 |  |  | | | | | |  |  | | | | |  | | | | | | | |
 | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — |
mm | — | — | — | — | — | — | — | — | 1 | 1 | — | 6 | — | 2 | 1 | — | — | 6 | 23 | 90 | 171 |
Temp °C | 30 | 30 | 29 | 30 | 30 | 28 | 30 | 30 | 29 | 30 | 31 | 29 | 31 | 30 | 29 | 31 | 31 | 29 | 28 | 29 | 29 |
Feels °C | 35 | 34 | 34 | 34 | 34 | 32 | 34 | 33 | 34 | 33 | 33 | 32 | 34 | 33 | 32 | 32 | 32 | 29 | 22 | 14 | 19 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | SE 9 | SW 8 | SE 10 | SE 10 | SE 9 | SE 9 | ESE 17 | ESE 16 | ESE 15 | ESE 16 | ESE 18 | ESE 18 | E 18 | E 18 | E 18 | E 19 | E 19 | E 20 | E 18 | NNW 14 |
| kJ | 17 | 13 | 10 | 16 | 17 | 13 | 13 | 168 | 357 | 392 | 520 | 1136 | 1652 | 2627 | 3424 | 4839 | 8448 | 13484 | 23382 | 11183 | 4374 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 8 | E 9 | SW 8 | SSW 8 | S 7 | ESE 16 | SE 9 | ESE 8 | SSE 9 | S 7 | SSE 8 | S 9 | SSW 8 | SE 8 | — | — | — | — | NNE 11 | NNE 14 |
| kJ | 10 | 10 | 6 | 10 | 6 | 4 | 48 | 13 | 14 | 8 | 4 | 14 | 13 | 28 | 31 | — | — | — | — | 1386 | 2878 |
Swell 3 Height (m) Direction Period (s) | SE 6 | E 9 | SE 10 | E 9 | E 9 | SW 8 | ESE 19 | E 8 | SE 9 | S 7 | SW 7 | SW 7 | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 6 | 4 | 6 | 6 | 3 | 37 | 5 | 13 | 4 | 2 | 2 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NE 8 | N 3 | N 4 | N 4 | — | — | SE 8 | — | N 6 | NNW 8 | NW 10 | W 11 |
| kJ | — | — | — | — | — | — | — | — | — | 16 | 5 | 12 | 17 | — | — | 28 | — | 156 | 1775 | 4786 | 9863 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 781 | 855 | 1003 | 1368 | 1422 | 672 | 0 | 0 | 14 | 14 | 14 | 48 | 47 | 47 | 14 | 785 | 727 | 607 | 785 | 727 | 727 |
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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