Surf Forecasts:
Yonabaru surf forecast from 27 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 6AM (local time) - 8ft (2.5m), 9s period, E swell with offshore winds.
- Most powerful swell: Monday 31 Aug, 9AM (local time) - 8ft (2.5m), 10s period, E swell with 1,255 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 6AM (local time) - 8ft (2.5m), 9s 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 (Sep 02) at 6AM. The primary swell is predicted to be 2.5m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Yonabaru in the next 16 days are 2.5m 10s and forecast to arrive on Monday (Aug 31) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Thursday (Sep 03) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 2nd Sep) | 8ft (2.5m) 9s |
| Best Surf | 6AM (Wed 2nd Sep) | 8ft (2.5m) 9s |
| Most Powerful | 9AM (Mon 31st Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Yonabaru over the next 16 days.
The Lowdown
Right, let's have a look at what's on offer for Yonabaru. The 16-day window starts now, but don't go rushing for your board just yet. There's a real rough patch to get through first.
We're looking at a few days of pretty ordinary conditions to start. From Thursday the 27th right through to the end of the month, it's a write-off. Strong cross-shore and cross-onshore winds, a bit of stormy weather, and lumpy, choppy seas. A couple of those days have a combined swell energy that's moderate to strong (386 and 661), but the wind just ruins it. You'd be battling more than surfing.
Things finally start to look up around Monday the 2nd of September. The wind swings offshore and clean, and we get a clean 6ft swell from the east with a 10-second period. The combined energy is moderate (535), so there's some push. This is the first proper glimmer of hope. It's still a bit of a marginal call on the tide, so pick your moment.
The standout period really shapes up later in the first week of September. Saturday the 5th has a clean 4ft swell from the north with an 11-second period (combined energy 373) under light offshore winds. But the real highlight is Monday the 7th of September. The morning session is the one to target: clean 6ft swell from the north-northwest, a 9-second period, and light offshore breezes from the west-northwest. Combined energy is a solid 559, making for a moderate, punchy wave. It's a bit of a step up in size, but with that offshore wind, it'll be clean and well-shaped.
After that, the second week looks like a mix of smaller, clean days and a bit of a fading trend, but nothing that matches that Monday the 7th. The water temperature is sitting at a warm 84°F, which is normal for this time of year.
So, for the best of it, clear your schedule for the morning of September 7th at Yonabaru. That's your wave.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 29°C on Thu afternoon, min 27°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 94mm), heaviest during Tue morning. Warm (max 29°C on Sun afternoon, min 27°C on Sun night). Winds decreasing (gales from the WNW on Tue afternoon, moderate winds from the WSW by Wed morning). | |||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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 13 | SE 7 | SE 6 | SE 6 | ESE 6 | SE 7 | SE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 10 | E 10 | E 9 | E 9 | E 8 | E 8 | E 8 | E 9 | E 10 | E 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 51 | 156 | 188 | 175 | 246 | 331 | 258 | 149 | 132 | 539 | 821 | 1255 | 840 | 787 | 699 | 639 | 716 | 685 | 535 | 382 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | cross-off | off | off |
High Tide | 7:05PM2.07m | 6:44AM2.21m | 7:32PM2.12m | 7:23AM2.23m | 7:57PM2.14m | 8:01AM2.21m | 8:23PM2.15m | 8:39AM2.14m | 8:50PM2.13m | 9:20AM2.02m | 9:18PM2.09m | 10:05AM1.87m | 9:49PM2.03m | |||||||
Low Tide | 00:49AM0.82m | 1:12PM0.32m | 1:22AM0.69m | 1:44PM0.38m | 1:56AM0.60m | 2:14PM0.48m | 2:31AM0.54m | 2:44PM0.61m | 3:07AM0.52m | 3:14PM0.77m | 3:47AM0.54m | 3:45PM0.94m | ||||||||
 |  |  | |  | | |  |  | | | | | |  | | | | | | |
 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — |
mm | 3 | 1 | — | — | — | — | — | — | — | — | 2 | 2 | 3 | 5 | 70 | 5 | 5 | 2 | 2 | — |
Temp °C | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 31 | 31 | 29 | 31 | 31 | 29 | 30 | 30 | 27 | 28 | 29 | 28 | 25 | 23 | 30 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | SW 9 | SW 9 | SSW 9 | SSW 9 | SSW 9 | S 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 10 | S 10 | S 10 | S 10 | E 9 | E 10 | E 11 |
| kJ | 682 | 400 | 194 | 91 | 81 | 108 | 101 | 137 | 68 | 103 | 62 | 27 | 28 | 32 | 48 | 131 | 128 | 685 | 535 | 382 |
Swell 2 Height (m) Direction Period (s) | E 7 | SW 9 | SW 9 | W 9 | W 8 | W 8 | E 13 | E 12 | SW 9 | E 12 | E 11 | SW 9 | SW 9 | SW 10 | SW 10 | SW 10 | SW 10 | SSW 10 | SSW 9 | S 10 |
| kJ | 25 | 74 | 112 | 83 | 35 | 18 | 53 | 47 | 39 | 43 | 23 | 21 | 13 | 16 | 15 | 14 | 15 | 94 | 92 | 68 |
Swell 3 Height (m) Direction Period (s) | E 13 | E 12 | E 12 | E 12 | E 14 | E 13 | W 7 | W 7 | SE 10 | ENE 12 | SW 9 | — | S 9 | SW 10 | SW 10 | SW 10 | E 14 | NW 8 | SW 10 | SW 10 |
| kJ | 51 | 26 | 25 | 25 | 32 | 55 | 9 | 4 | 37 | 79 | 29 | — | 6 | 16 | 15 | 14 | 4 | 3 | 14 | 25 |
Wind waves Height (m) Direction Period (s) | SSW 8 | SE 7 | SE 6 | SE 6 | ESE 6 | SE 7 | SE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 10 | E 10 | E 9 | E 9 | E 8 | E 8 | E 8 | NNE 5 | NNW 5 | WNW 6 |
| kJ | 240 | 156 | 188 | 175 | 246 | 331 | 258 | 149 | 132 | 539 | 821 | 1255 | 840 | 787 | 699 | 639 | 716 | 67 | 122 | 238 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 616 | 10 | 599 | 820 | 599 | 703 | 820 | 13 | 16 | 670 | 616 | 607 | 670 | 607 | 1368 | 1278 | 765 | 33 | 0 | 0 |
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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