Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 2 pm 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
28.9° 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 16 Aug 2026:

  • Most powerful swell: Wednesday 19 Aug, 9PM (local time) - 10ft (3.0m), 9s period, ESE swell with 1,350 kJ wave energy.

Best Forecast Surf Conditions for Yonabaru this week:

The most powerful waves expected at Yonabaru in the next 16 days are 3.0m 9s and forecast to arrive on Wednesday (Aug 19) at 9PM. 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 10s period and expected on Friday (Aug 21) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 9PM (Wed 19th Aug)10ft (3.0m) 9s

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


The Lowdown

G’day, I’m Rusty. Alright, let’s be honest – the next week and a half at Yonabaru is a real struggle. We’ve got a long, dry gap with nothing worth paddling out for from Sunday afternoon the 16th of August all the way through to the morning of Monday the 25th of August. That’s a solid stretch of onshore winds, short-period windswell, and mostly poor or marginal conditions. The water temp is sitting at 84°F, which is pretty much normal for this time of year – nothing weird there.

The first real glimmer of hope comes on Tuesday the 25th of August. By Tuesday morning, we get a clean 3ft swell from the ESE at 14 seconds, with a light offshore breeze from the WNW. The combined energy is moderate at 352 (moderate wave energy). That’s a proper groundswell, and with that offshore wind, it’s going to be glassy. The afternoon picks up a bit more – 4ft from the ESE at 15 seconds, combined energy 592 (moderate). Still clean, light NW breeze offering cross-off wind. This is the standout window for the whole forecast. Yonabaru is fairly exposed to the swell and the optimum direction is NE, so the ESE direction is a bit off but still works.

From Wednesday the 26th, the swell keeps building but the quality starts to drop. Wednesday morning sees 5ft from the ESE at 16 seconds (very long period), combined energy shooting up to 1027 (strong). That’s a lot of energy, but it’s cross-off wind and the surf conditions are called marginal. The period is very long, so at a beach break like this, it might break a bit too straight – better suited to a point or reef. Thursday the 27th morning has 6ft at 15 seconds, combined energy 1567 – that’s strong, but the wind goes cross-shore and there’s a slight chop. By Friday and Saturday the 28th and 29th, we’re looking at 6ft to 8ft from the ESE, with periods of 15-16 seconds and combined energy over 2000 (very strong). That’s big, powerful swell, but the wind is fresh and cross-off, so it’s not clean. This is expert territory – over 8ft at times – and the long period groundswell might be challenging for a beach break. For the following Monday the 31st of August, the surf drops to 5-6ft from the ENE, combined energy around 960-1207, but the wind is cross-shore and light rain is in the mix, so it’s not great.

Honestly, the best bet is Tuesday the 25th of August – that morning session with the offshore breeze and clean 3ft groundswell is the only real standout. The rest of the run is either too small, too windy, or too big and raw. If you’re an expert, the bigger days later in the month might offer some heavy, challenging waves, but don’t expect any perfection.

Rusty.

Short Range Forecast

Light rain (total 9mm), mostly falling on Tue night. Warm (max 29°C on Sun afternoon, min 27°C on Sun night). Mainly fresh winds.

Days 5-7 Weather Summary

Heavy rain (total 33mm), heaviest during Wed night. Warm (max 30°C on Fri morning, min 26°C on Wed night). Mainly fresh winds.

Sun
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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
1
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
E
10
0.5
E
10
0.6
E
10
0.6
E
10
0.5
E
10
1.2
E
6
1.4
E
6
2.1
E
7
2.5
ESE
8
2.5
ESE
8
3
SE
9
2.5
SE
10
2
SE
9
2.2
SSE
10
1.2
E
7
0.2
ESE
10
0.3
ESE
11
0.3
ESE
9
0.3
SE
11
0.4
SE
10
Wave Graph
Metric surfscale
Energy kJ
51
50
73
71
50
85
130
462
866
870
1283
1312
678
0
155
11
23
17
18
25
Wind (km/h)
20
ESE
15
ESE
15
ESE
15
ESE
20
ESE
25
E
30
ENE
30
E
30
E
30
E
20
SE
20
SE
20
S
15
S
15
S
25
S
20
S
25
S
25
SSW
20
SSW
Wind State
on
cross-on
on
on
on
on
on
on
on
on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross-off
cross-off
High Tide
8:59PM2.11m
9:07AM2.08m
9:27PM2.09m
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
Low Tide
3:02AM0.64m
3:16PM0.62m
3:42AM0.63m
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
clear
clear
clear
clear
rain showers
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:01
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:04
7:02
7:01
7:00
7:00
6:59
 mm
1
5
3
3
17
5
3
1
2
2
3
2
Temp °C
29
27
29
29
27
28
29
28
28
28
27
28
27
27
30
30
28
30
29
28
Feels °C
30
29
32
31
30
29
30
29
29
30
28
31
30
32
31
31
30
31
31
31
  • Map Icons:
  • Break
  • 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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