Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 8 am 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
28.8°C
0.1° 

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


Yonabaru surf forecast from 27 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 3AM (local time) - 11ft (3.5m), 10s period, E swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 3PM (local time) - 18ft (5.5m), 12s period, SE swell with 8,245 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 3AM (local time) - 11ft (3.5m), 10s 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 Tuesday (Sep 01) at 3AM. The primary swell is predicted to be 3.5m and 10s 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 5.5m 12s and forecast to arrive on Tuesday (Sep 01) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7.0m 12s period and expected on Thursday (Sep 03) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 1st Sep)11ft (3.5m) 10s
Best Surf 3AM (Tue 1st Sep)11ft (3.5m) 10s
Most Powerful 3PM (Tue 1st Sep)18ft (5.5m) 12s

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


The Lowdown

Alright, Rusty here, and I've got the skinny on what's coming our way at Yonabaru. Let's be real, the next couple of weeks are a mixed bag, and we're gonna have to be patient. The water’s sitting at 84°, which is pretty much spot on for this time of year, so at least you won't be freezing your arse off while you wait.

We're in for a long, slow start. From Thursday the 27th of August all the way through to Monday the 31st of August, it’s a write-off. The wind is constantly onshore or cross-shore, and the swell is either tiny or just plain messy. You'll see a little bump in energy on the 30th and 31st with combined energy hitting 421 and then 896, but it's all cross-on, choppy, and tagged as "poor surf conditions." Don't bother paddling out.

Now, pay attention to Tuesday the 1st of September. This is the big one, but it's not for everyone. We’ve got a serious pulse of energy, with a combined energy reading of 3845 in the morning and a massive 8245 in the afternoon. The swell is coming from the E and SE, pushing 15 ft to 18 ft. That's a beast. The wind is offshore, swinging cross-offshore, making it clean, but this is strictly for the experts. If you're a beginner, stay on the beach. This is a big, powerful groundswell with a period of 10 to 12 seconds, so it's going to have some serious push. The forecast notes it's "too big for this break," so take that as a warning. It's a standout, but a dangerous one.

After that big event, things settle down a bit. Wednesday the 2nd of September morning looks like the best of the rest. The swell drops to a more manageable 8 ft from the ESE, with offshore winds from the WNW. This is the one I'd circle. The combined energy is a solid 737, and the conditions are clean. It's a good, solid option for a surf. The afternoon on the 2nd, and the days following, are all marginal. There's some waist-to-chest high swell moving through, but the wind stays clean, so it's a better bet than the first week.

The following weekend, the 5th and 6th of September, has some promise. Saturday the 5th afternoon sees a clean 4 ft from the N with a nice 11-second period. That's a long, clean groundswell that should wrap in nicely. The combined energy is 447. Sunday the 6th, the wind turns onshore again, so it's back to being messy.

From the 7th of September onwards, it's pretty much back to square one. Small, weak swells, and a lot of onshore wind. There's a bit of a north swell on the 9th, but it's cross-shore and choppy. The 10th and 11th are tiny, with combined energy dropping to 99 and then 43. It's a flat spell to finish the run.

So, to wrap it up: the first week is a total loss. The real standout is the morning of Wednesday the 2nd of September. That's your window for clean, head-high waves with offshore wind. The Tuesday the 1st of September swell is a monster for experts only. The Saturday the 5th of September afternoon is also a good call for a cleaner, smaller session.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Thu afternoon. Warm (max 29°C on Thu morning, min 27°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 66mm), heaviest during Mon night. Warm (max 29°C on Sun morning, min 27°C on Sun night). Mainly fresh winds.

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
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
1
!
!
1
3
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
E
13
0.5
E
7
1.1
SE
7
1.6
SE
6
1.4
SE
6
1.7
ESE
6
1.8
SE
7
1.6
SE
7
1.3
ESE
6
1.2
ESE
7
1.4
ESE
10
1.6
ESE
10
1.9
ESE
10
2
ESE
10
3
E
10
4.5
E
10
5.5
SE
12
2.5
ESE
8
2.3
ESE
8
1.8
E
9
1.6
E
10
Wave Graph
Metric surfscale
Energy kJ
53
25
121
184
157
253
309
262
145
139
378
461
720
772
1712
3845
8245
865
737
529
512
Wind (km/h)
20
SSW
20
S
20
SE
20
SE
25
ESE
25
ESE
25
ESE
25
E
20
E
25
ENE
25
ENE
25
NNE
25
NE
30
NNE
25
N
25
WNW
30
W
25
WSW
20
WNW
25
NW
20
NW
Wind State
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
off
cross-off
off
cross-off
cross-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
12:39PM0.31m
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
part cloud
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
part cloud
part cloud
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:51
6:50
6:49
6:47
 mm
2
1
4
2
5
44
4
3
4
1
1
Temp °C
29
28
28
29
29
28
29
29
27
29
29
27
29
27
27
28
28
28
28
28
27
Feels °C
32
30
31
31
31
30
31
31
29
30
29
28
30
28
28
28
29
30
31
30
29
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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