Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 8 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
28.7°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 26 Aug 2026:

  • Best quality surf: Wednesday 2 Sep, 6AM (local time) - 11ft (3.5m), 14s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 2 Sep, 6AM (local time) - 11ft (3.5m), 14s period, ESE swell with 4,241 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 6AM (local time) - 11ft (3.5m), 14s 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 Wednesday (Sep 02) at 6AM. The primary swell is predicted to be 3.5m and 14s period with a secondary swell of 3.5m and 8s. 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 3.5m 14s and forecast to arrive on Wednesday (Sep 02) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 9s period and expected on Wednesday (Aug 26) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Wed 2nd Sep)11ft (3.5m) 14s
Best Surf 6AM (Wed 2nd Sep)11ft (3.5m) 14s
Most Powerful 6AM (Wed 2nd Sep)11ft (3.5m) 14s

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


The Lowdown

Alright, this is Rusty. Let’s get into it.

First off, I gotta be straight with you – the start of this outlook is a real struggle. From Wednesday the 26th of August right through to the end of the month, we’re looking at a run of flat to junky, blown-out conditions. It’s pretty grim. The winds are howling from the southwest and south, throwing up cross-off and cross-shore junk that’s just not worth paddling out for. The swell is tiny and weak, with combined energy barely scratching 100 at best. It’s a write-off for a few days. There’s a long gap with no real surf to speak of.

Then, as we roll into Monday the 31st of August, things start to get interesting, but it’s still messy. The swell picks up to 6ft from the ESE with a period of 10 seconds, but the wind is a fresh cross-onshore, making it lumpy. The energy is climbing though (678). By Monday afternoon, the swell hits 8ft from the ESE, and the energy jumps to 1830 – that’s moderate to strong – but the wind is still cross-shore and lumpy. It’s marginal, a real “maybe” session.

Now, here’s where we get a real standout. Tuesday morning, September 1st, the wind shifts to a cross-off from the NNW at 30 km/h, and the swell is 7ft from the ESE with a 12-second period. The energy is strong (1273). That’s clean, powerful groundswell. Tuesday afternoon is even better with a cross-off from the NW and 5ft of SE swell, but the period drops to 13 seconds, which is still long period. The energy is even higher (1447). This is the best window in the first week.

But the real highlight, the one you’ve been waiting for, is Wednesday, September 2nd. The morning brings a 10ft swell from the east, with a 14-second period. That’s a very long period groundswell, and the energy is massive (5773). The wind is a clean cross-off from the NW. In the afternoon, the swell jumps to 13ft from the NW with a 10-second period, and the energy is still huge (4437). The wind is a moderate cross-off. Now, here’s the catch: this is Yonabaru, a beginner break. At 10ft to 13ft, this is expert territory. The swell is too big for learners, and the direction is coming from the NW, which is not the optimum NE direction for this spot in the guidance. It’s going to be a big, powerful, and potentially dangerous wave. For the experienced crew, it’s going to be a session to remember, but it’s not for the faint of heart. The water temp is about 84°F, which is normal for the time of year.

Thursday, September 3rd, cleans up nicely. The morning is a gem: a 10ft swell from the NNW with a 12-second period, and the wind is a light cross-off from the NW at just 5 km/h. The energy is strong (2454). This is excellent surf for experienced surfers. The wind is almost glassy, so expect clean, lined-up waves. That’s the pick of the day.

After that, the surf drops off a cliff again. From Thursday afternoon through to the end of the 16-day window, we’re back to small, weak, and mostly onshore wind conditions. The swell goes tiny, and the energy levels are pathetic (15 to 885). There’s a brief pulse on Monday, September 7th, with a 8ft swell from the NNW and glassy conditions in the morning, but it’s a short-lived window and the wind turns onshore later. It’s a tease.

So, the bottom line: the best surf on offer is the big swell window from Tuesday, September 1st, through Thursday, September 3rd. The standout is Wednesday, September 2nd, but it’s for experts only. If you’re a beginner, stay well clear. The long period swells will be breaking a bit straight at Yonabaru, which is a beach break, so you’ll need to find the banks. Crowds are possible at Yonabaru, so get in early.

Rusty.

Short Range Forecast

Light rain (total 9mm), mostly falling on Wed morning. Warm (max 29°C on Thu morning, min 27°C on Wed morning). Winds decreasing (strong winds from the SW on Wed morning, light winds from the S by Thu morning).

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Mon morning. Warm (max 29°C on Sat morning, min 27°C on Sat night). Mainly fresh winds.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
1
0
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
NNW
9
0.6
ESE
9
0.4
E
13
0.4
E
13
0.7
ESE
8
1.2
SE
7
1.6
SE
6
1.6
SE
6
1.5
SE
6
1.4
SE
6
1.2
SE
6
1.3
ESE
7
1.7
ESE
9
1.4
SE
9
1.7
ESE
9
1.9
ESE
10
2.5
ESE
10
1.9
SE
10
2
ESE
12
1.4
SE
13
3
ESE
13
Wave Graph
Metric surfscale
Energy kJ
591
65
55
53
54
156
188
194
177
149
123
178
419
323
480
678
1152
678
1100
639
2844
Wind (km/h)
45
SW
35
SSW
25
SSW
15
S
20
SSE
20
SE
25
SE
25
ESE
25
ESE
25
ESE
25
E
20
ENE
25
ENE
25
ENE
30
NNE
30
NNE
30
NNE
30
N
30
NNW
25
NW
25
WNW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
High Tide
6:38PM2.01m
6:03AM2.14m
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
Low Tide
12:03PM0.34m
00:15AM0.96m
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
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:05
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:53
6:52
6:52
6:51
6:50
6:49
 mm
5
1
1
2
1
1
4
4
4
3
Temp °C
28
28
28
29
29
28
29
29
28
29
29
27
29
29
27
28
28
27
28
28
28
Feels °C
27
27
30
33
31
31
31
31
30
31
31
29
29
30
28
28
29
28
29
30
30
  • 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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