Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 8 pm 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
28.6°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 29 Aug 2026:

  • Most powerful swell: Tuesday 1 Sep, 12AM (local time) - 8ft (2.5m), 9s period, ESE swell with 1,082 kJ wave energy.

Best Forecast Surf Conditions for Yonabaru this week:

The most powerful waves expected at Yonabaru in the next 16 days are 2.5m 9s and forecast to arrive on Tuesday (Sep 01) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 11s period and expected on Wednesday (Sep 02) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful12AM (Tue 1st Sep)8ft (2.5m) 9s

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


The Lowdown

Alright folks, let’s talk about what’s headed our way. This is Rusty, looking at the outlook for Yonabaru, and I gotta be straight with you – it’s gonna be a tough stretch. We’re looking at a solid 12-day period of, well, frustration. The wind is a constant problem, and the swell is just not cooperating.

The first week and a half is a write-off. From Sunday, August 30th right through the start of the second week, we’ve got a persistent run of onshore and cross-onshore winds. The wind speeds are mostly in the 12-18 mph range, making a mess of things. The water temp is about average for this time of year, but you won’t care about that when you’re staring at chop. The swell shows up, but the quality is just poor. The combined wave energy is moderate at best, hitting a few hundred (like 154 on Sunday morning), but it’s all wind-slop. There’s a pulse of energy on the 7th and 8th of September, with the combined energy climbing into the 600-800 range, but the wind is howling at 22-31 mph, creating lumpy, messy, blown-out conditions. Not worth it.

Now, after this long, bleak run, we finally get a glimmer of hope. The standout window is Friday, September 11th, through Saturday, September 12th. This is the one to circle on your calendar.

Friday the 11th offers a dramatic shift. In the afternoon, the wind swings around to the WNW at a light 6 mph – a clean, cross-offshore breeze. The swell comes from the SE with a very long period of 13 seconds (strong groundswell energy). The combined energy jumps to 1309 (strong). The wave comment says "expect very good surf conditions". The swell height is a solid 5 ft, which is a nice size for a lot of boards. This is a great setup, but keep in mind that long period swell like this can be a bit straight at beach breaks, so look for a sandbar that’s working. Crowds are sometimes an issue here, so be prepared for a few others who’ve been waiting out the crap.

Saturday the 12th is a different beast. This is for the big dogs only. The morning and afternoon see a massive pulse of energy from the ESE, with a combined swell energy reading of 21,863 and 39,366 – that’s very strong, dangerous energy. The swell is predicted to be 21 ft to 23 ft with a period of 16 seconds. The wind is clean from the NNW (cross-offshore), but this is not a recommended spot for this. The forecast literally says it’s "too big for this break." This is expert-only territory and honestly, most of us will be watching from the beach. The swell direction is off the optimum for the break, and the size is just overwhelming.

So, to wrap it up: For the next 11 days, don’t bother. Wait for that clean, cross-offshore window on Friday afternoon, September 11th for the best chance at a decent, clean session. Saturday the 12th is a spectacle for the brave and the crazy, but not a practical surf day for most.

Stay patient, and keep your wax dry.

Rusty.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Tue afternoon. Warm (max 29°C on Sun morning, min 27°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Heavy rain (total 63mm), heaviest during Wed afternoon. Warm (max 29°C on Fri morning, min 26°C on Wed afternoon). Mainly fresh winds.

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
ESE
7
1.1
ESE
7
1.2
ESE
7
1.2
ESE
7
1.5
ESE
8
2.1
ESE
8
2.5
ESE
9
2.4
ESE
8
1.9
ESE
8
1.5
E
8
1.7
E
9
0.4
ENE
12
3.5
SSE
11
0.3
E
11
1.5
ESE
8
1.7
ESE
9
1.4
ESE
9
1.3
ESE
8
1.2
ESE
8
Wave Graph
Metric surfscale
Energy kJ
136
105
121
128
240
575
1082
778
494
324
465
50
0
22
240
474
288
223
161
Wind (km/h)
20
SE
20
ESE
25
ESE
20
E
25
E
30
ENE
35
E
30
ESE
25
SE
25
ESE
25
SE
25
SE
35
SE
25
SE
25
SE
30
ESE
25
ESE
20
ESE
20
E
Wind State
cross-on
cross-on
cross-on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
High Tide
8:01AM2.21m
8:23PM2.15m
8:39AM2.14m
8:50PM2.13m
9:20AM2.02m
9:18PM2.09m
10:05AM1.87m
9:49PM2.03m
10:59AM1.71m
10:24PM1.95m
12:18PM1.57m
11:11PM1.85m
Low Tide
1:56AM0.60m
2:14PM0.48m
2:31AM0.54m
2:44PM0.61m
3:07AM0.52m
3:14PM0.77m
3:47AM0.54m
3:45PM0.94m
4:34AM0.60m
4:18PM1.11m
5:32AM0.67m
5:02PM1.28m
clear
clear
clear
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
6:49
6:47
6:46
6:45
 mm
1
7
4
6
5
8
28
15
4
2
1
Temp °C
28
29
29
27
28
29
27
28
28
27
27
26
27
28
28
28
29
29
27
Feels °C
31
31
31
28
28
29
27
30
30
29
29
27
27
30
30
30
31
31
29
  • 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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