Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 8 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
29.0° C
0.2° 

Yonabaru surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Yonabaru surf forecast from 18 Aug 2026:

  • Most powerful swell: Tuesday 25 Aug, 3PM (local time) - 7ft (2.1m), 16s period, ESE swell with 2,160 kJ wave energy.

Best Forecast Surf Conditions for Yonabaru this week:

The most powerful waves expected at Yonabaru in the next 16 days are 2.1m 16s and forecast to arrive on Tuesday (Aug 25) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Friday (Aug 21) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 3PM (Tue 25th Aug)7ft (2.1m) 16s

Table - best surf conditions forecast for Yonabaru over the next 16 days.


The Lowdown

Right then, let’s have a look at what’s on the cards for the next couple of weeks or so.

To be honest, the start is a bit of a write-off. We’re looking at a run of poor surf for the first full week or so, from Tuesday the 18th of August through to around the 25th. It’s not a great run, with messy, choppy conditions and winds that just won’t play ball. There’s a bit of energy around in the water, but it’s all junk.

Things start to shift around Tuesday the 25th of August. The swell starts to build, but it’s still a bit messy with that cross-onshore wind. The water temp is sitting around 84° at Yonabaru, which is pretty much spot on average for this time of year, so no surprises there.

The real standout window opens up on Thursday the 27th of August. Yonabaru is the only break in the mix here, and it starts to fire. We’re looking at a solid 8ft swell coming from the ESE with a very long period of 16 seconds. That’s proper groundswell. The wind swings to a cross-offshore direction, and the wave energy is strong, hitting around 3419 (strong). The wind is light, and the conditions are clean. This is excellent for experienced surfers, as that size and power is too much for beginners.

It gets even better into the weekend. Thursday afternoon sees the swell bump up to 10ft from the east, still with that long 16-second period, and the wind stays clean and cross-offshore. The combined energy jumps to 3971 (strong). This is big, powerful surf that will be handling like a point break should, with good shape. The bigger sets will be serious, but the long gaps between them will make it easier to get out the back.

Come Saturday the 29th of August, the swell drops slightly to 7ft from the east, but the period holds at 13 seconds. The wind is a light cross-offshore, and the conditions are clean again. The energy is still moderate at 1491. This is a more manageable size for a good crew.

Then, Sunday the 30th of August looks like the very best of the run. The swell picks up again to 10ft from the east, period 14 seconds, and the wind is light and cross-offshore. The combined energy is a massive 4834 (very strong). The conditions are clean. This is a big, powerful, and clean session for experienced surfers only.

Now, a word of caution. On Monday the 31st of August, the model is showing a massive swell of 23ft to 26ft. That is way too big for Yonabaru. The wind is glassy, which is a shame, but the swell size makes it a no-go for paddle surfing. It would be more of a kite-surfing show.

After that, the swell drops right back off into the first days of September, and we’re back to small, ordinary conditions.

So, if you’ve got the experience, the standout sessions are Thursday the 27th of August, and especially Sunday the 30th of August. The later dates are more of a long-range call, so keep an eye on the forecasts, but it’s promising.

Rusty.

Short Range Forecast

Heavy rain (total 37mm), heaviest during Thu night. Warm (max 29°C on Thu afternoon, min 26°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 56mm), heaviest during Fri morning. Warm (max 29°C on Sun morning, min 25°C on Fri morning). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
E
6
1.3
E
6
1.5
E
6
1.6
E
7
1.7
E
7
2.1
ESE
8
2.4
SE
8
2.2
SE
8
0.4
ENE
8
0.4
ENE
8
0.3
ESE
9
0.2
ESE
10
1.4
SSE
6
0.3
ENE
9
0.2
E
13
0.2
ESE
13
0.1
SE
18
0.4
ESE
16
0.8
ESE
14
0.7
ESE
17
1.5
ESE
16
Wave Graph
Metric surfscale
Energy kJ
114
124
176
233
295
555
725
0
20
20
17
9
114
16
13
17
12
98
261
249
1136
Wind (km/h)
25
E
25
E
25
E
30
E
30
ESE
25
ESE
20
SE
25
SE
25
S
25
SSE
15
ESE
20
SSW
20
S
25
SSE
20
SSE
20
SE
20
SE
20
ESE
25
ESE
20
E
15
E
Wind State
on
on
on
on
on
on
cross-on
cross-on
cross
cross
on
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
on
on
on
High Tide
9:50AM1.95m
9:57PM2.05m
10:40AM1.79m
10:31PM1.99m
11:45AM1.63m
11:12PM1.91m
1:25PM1.53m
00:10AM1.84m
3:38PM1.57m
1:38AM1.79m
4:55PM1.69m
3:12AM1.83m
5:37PM1.81m
Low Tide
3:47PM0.79m
4:26AM0.65m
4:20PM0.97m
5:20AM0.70m
4:58PM1.15m
6:30AM0.74m
5:55PM1.32m
8:02AM0.73m
7:49PM1.42m
9:29AM0.65m
9:46PM1.39m
10:33AM0.53m
10:52PM1.26m
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
mod rain
thunderstorm
mod rain
thunderstorm
mod rain
thunderstorm
thunderstorm
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:03
6:03
6:03
6:03
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:01
7:00
7:00
6:59
6:58
6:57
 mm
2
2
3
7
11
3
9
14
10
17
7
6
2
Temp °C
28
28
27
28
28
27
28
29
27
26
26
26
26
26
27
29
29
27
28
27
26
Feels °C
30
29
28
30
30
29
30
30
28
28
30
28
28
28
29
31
31
29
29
27
28
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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