Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 8 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
28.8° C
0.0° 

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


Yonabaru surf forecast from 20 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s period, ESE swell with cross-onshore winds.
  • Most powerful swell: Tuesday 25 Aug, 9AM (local time) - 11ft (3.5m), 17s period, E swell with 7,175 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 17s 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 Tuesday (Aug 25) at 6AM. The primary swell is predicted to be 3.5m and 17s period with a secondary swell of 0.9m and 4s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Yonabaru in the next 16 days are 3.5m 17s and forecast to arrive on Tuesday (Aug 25) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 9s period and expected on Friday (Aug 21) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Tue 25th Aug)11ft (3.5m) 17s
Best Surf 6AM (Tue 25th Aug)11ft (3.5m) 17s
Most Powerful 9AM (Tue 25th Aug)11ft (3.5m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the menu for Yonabaru over the next couple of weeks.

Right off the bat, I’ll be straight with you – the start of this run is a total write-off. From Friday morning (21 August) right through to Monday afternoon (24 August), it’s grim. We’ve got a risk of thunderstorms, fresh to strong onshore winds, and the swell is small and weak. Wave energy is pathetic, sitting between 14 and 217 (combined energy), with short-period, junky waves. Don’t bother paddling out.

Things start to look a bit more interesting later in the window. The real standout, and the only time I’d actually get excited, is Tuesday 25 August. Come Tuesday morning, it’s a different story. The wind swings onshore from the ENE at a manageable 12 mph, but the swell kicks up to a solid 12 ft from the east, with a long period of 17 seconds. That’s a proper groundswell, pushing a massive 7209 combined energy. The conditions are favorable for the break, but let’s be clear – at 12 ft, this is strictly for the experienced crew. The swell will be powerful and clean, but it’s no place for beginners. The water temp is about average for this time of year, so nothing unusual there.

After that, the surf drops off again. Wednesday 26 August has a small window of 5 ft from the NNE with light winds, but the cross-on wind and marginal tide conditions make it a bit of a gamble. The rest of the run into the first week of September is mostly poor, with onshore winds and inconsistent swell. The period from 31 August to 5 September shows some bigger swell pushing 5 ft to 7 ft from the east, but the wind stays cross-onshore and lumpy, so it’s never really clean. The energy builds late in the run (up to 1804 combined energy), but the wind ruins it.

If you’re holding out for anything decent, Tuesday 25 August is your best bet. Just know that it’s a big, powerful swell for experts only.

Rusty.

Short Range Forecast

Heavy rain (total 20mm), heaviest during Fri morning. Warm (max 29°C on Sat morning, min 26°C on Fri morning). Winds increasing (light winds from the SE on Thu night, strong winds from the SE by Fri night).

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Mon morning. Warm (max 30°C on Tue morning, min 27°C on Sun night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
!
!
3
2
2
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
ENE
7
1.3
ESE
6
0.3
ENE
8
3.5
SSE
9
0.2
ENE
9
3.5
SSE
9
0.2
ESE
13
1.5
ESE
6
1.5
ESE
6
0.6
ESE
16
1.3
ESE
17
1.9
ESE
18
2.5
ESE
18
3.5
E
17
3.5
E
16
1.9
ENE
14
1.5
NNE
12
3
NW
11
0.6
ESE
9
Wave Graph
Metric surfscale
Energy kJ
79
118
14
0
8
0
18
143
141
164
921
2120
4354
7175
5239
1347
644
1773
65
Wind (km/h)
25
SE
35
SE
40
SE
35
SE
35
ESE
40
SE
30
SE
30
ESE
30
ESE
25
ESE
25
E
25
E
20
E
20
ENE
15
ENE
10
ENE
5
NE
15
ENE
10
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
on
on
cross-on
on
cross-on
High Tide
11:12PM1.91m
1:25PM1.53m
00:10AM1.84m
3:38PM1.57m
1:38AM1.79m
4:55PM1.69m
3:12AM1.83m
5:37PM1.81m
4:23AM1.93m
6:10PM1.92m
5:17AM2.04m
6:38PM2.01m
Low Tide
6:30AM0.74m
5:55PM1.32m
8:02AM0.73m
7:49PM1.42m
9:29AM0.65m
9:46PM1.39m
10:33AM0.53m
10:52PM1.26m
11:22AM0.42m
11:37PM1.12m
12:03PM0.34m
00:15AM0.96m
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
6:59
6:58
6:57
6:55
6:54
 mm
2
5
2
2
2
1
4
1
1
1
1
1
1
Temp °C
27
27
27
27
29
28
27
28
28
27
28
28
27
30
29
27
29
30
27
Feels °C
30
27
25
24
28
27
27
29
29
28
29
30
29
33
32
31
32
33
31
  • 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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