Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 2 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Yonabaru sea temperature is
28.9°C
0.4° 

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


Yonabaru surf forecast from 7 Sep 2026:

  • Most powerful swell: Tuesday 8 Sep, 3PM (local time) - 5ft (1.6m), 9s period, NNW swell with 404 kJ wave energy.

Best Forecast Surf Conditions for Yonabaru this week:

The most powerful waves expected at Yonabaru in the next 16 days are 1.6m 9s and forecast to arrive on Tuesday (Sep 08) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Sunday (Sep 13) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 3PM (Tue 8th Sep)5ft (1.6m) 9s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

Well, I gotta be straight with you – this 16-day window for Yonabaru is a tough one. We’ve got a solid run of onshore and cross-off winds that are going to keep things messy for a good stretch. The first real chance of anything worth paddling out for doesn’t show up until Friday the 18th, and even then it’s just small, ordinary waves. There’s a big gap of poor conditions from now until then.

Let’s start with the early part. Tuesday the 8th, we’ve got a bit of a cross-off breeze, but the swell is a short-period 5ft from the NNW with a period of only 8 seconds. The energy is moderate (344), but the wind is howling at 15-18 mph, so it’s going to be choppy and ugly. The rest of the week through to the 17th is a write-off – mostly onshore winds, short-period chop, and very low energy. The swell drops into the 2ft-4ft range, but the wind state is just not cooperating. It’s a real bummer for a stretch that’s supposed to be fairly consistent.

The first glimmer of hope, and it’s a small one, comes on Friday the 18th. The morning looks glassy with no wind, and we’ve got a tiny 2ft groundswell from the east with a long 12-second period. The energy is weak (141), but it’s the cleanest conditions we’ve seen. The afternoon stays clean with a cross-off breeze, but the swell drops to 2ft. It’s not for charging, but if you’re desperate, it’s something to look at.

Now, the real standout – and I mean the *only* standout – is on Monday the 21st. We get a massive shot of long-period groundswell from the ESE. The morning kicks off with a 3ft swell at a very long 17 seconds, and the energy jumps to 778 – that’s solid. The wind is a clean cross-off from the NNW. But it’s the afternoon that’s the real eye-opener: the swell jumps to 5ft, still from the ESE, with a 16-second period, and the energy rockets to a massive 2802. That’s strong energy. The winds stay clean and cross-off. This is a proper groundswell – long lines, power, and clean conditions. For a beginner break like Yonabaru, a 5ft swell is manageable, but these long-period swells can make the surf a bit more walled up and tricky, especially for a beach setup. The rip might be a bit of a pull. The crowds here are listed as "sometimes," so you might see a few others out, but it’s not a zoo.

Tuesday the 22nd still has some decent leftovers – 5ft in the morning and 5ft in the afternoon, both from the ESE with a 14-15 second period. The energy is still strong (1233 and 1056), but the wind turns cross-shore, which will put a little chop on the face. It’s still a good session, but not as clean as Monday.

The outlook after that fades again. The swell drops, the wind turns onshore, and we’re back to poor conditions. Wednesday the 23rd has some chest-high leftovers from the east, but it’s onshore, so it’s a no-go.

So, the one to circle on your calendar is Monday the 21st. That afternoon looks like the best of the lot by a long shot. If you’re an intermediate, you’ll be fine. Beginners might find it a bit punchy for the first time out. The water temperature is 84°, which is about average for this time of year, so no need for a thick wetsuit.

Keep your eyes on the forecasts – it’s been a rough run, but it’s not going to stay poor forever.

Rusty

Short Range Forecast

Light rain (total 7mm), mostly falling on Thu night. Warm (max 28°C on Tue morning, min 26°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Fri afternoon. Warm (max 28°C on Fri morning, min 27°C on Fri night). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
0
1
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)
1.6
NNW
8
1.6
NNW
9
1.4
NNW
8
1.3
N
8
1.3
N
8
1.2
N
7
1.3
N
9
1.3
N
9
1.1
N
9
1
N
9
0.9
NNW
8
1.1
SE
6
1.2
SE
7
1.3
SE
7
0.4
E
14
1.2
E
6
1.2
E
6
1.3
E
7
1.3
ESE
8
1.3
ESE
8
1.1
ESE
9
Wave Graph
Metric surfscale
Energy kJ
330
404
232
196
217
156
270
276
207
158
118
75
127
165
62
102
115
150
212
221
202
Wind (km/h)
25
NNW
30
NNW
20
N
25
N
25
NNW
20
N
15
N
10
N
10
E
15
ESE
20
ESE
20
ESE
20
ESE
20
E
20
ENE
25
ENE
25
ENE
20
ENE
20
E
25
E
20
ESE
Wind State
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross
on
on
cross-on
cross-on
on
on
on
cross-on
on
on
on
on
on
High Tide
5:37PM1.87m
4:48AM1.96m
6:06PM1.97m
5:36AM2.07m
6:32PM2.04m
6:18AM2.16m
6:58PM2.10m
6:58AM2.21m
7:23PM2.14m
7:35AM2.21m
7:49PM2.16m
8:13AM2.16m
8:15PM2.15m
Low Tide
10:47AM0.51m
11:09PM1.12m
11:31AM0.43m
11:47PM0.94m
12:08PM0.38m
00:21AM0.77m
12:42PM0.38m
00:54AM0.63m
1:14PM0.43m
1:27AM0.51m
1:44PM0.51m
2:00AM0.44m
2:14PM0.62m
2:35AM0.41m
clear
clear
thunderstorm
clear
clear
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:11
6:11
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:40
6:38
6:37
6:37
6:36
6:35
 mm
1
2
4
2
4
1
1
2
1
1
3
5
Temp °C
28
28
27
28
28
27
28
28
27
28
28
27
28
28
27
27
28
27
28
28
27
Feels °C
30
28
28
29
29
29
31
32
31
32
31
30
31
30
29
28
30
29
29
30
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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