Yonabaru Surf Break

Lat Long: 26.20° N 127.76° E

Yonabaru Surf Forecast and Surf Report

Issued: 2 pm 10 Sep 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 10 Sep 2026:

  • Most powerful swell: Wednesday 16 Sep, 3AM (local time) - 4.5ft (1.3m), 10s period, ESE swell with 315 kJ wave energy.

Best Forecast Surf Conditions for Yonabaru this week:

The most powerful waves expected at Yonabaru in the next 16 days are 1.3m 10s and forecast to arrive on Wednesday (Sep 16) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 9s period and expected on Tuesday (Sep 15) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 3AM (Wed 16th Sep)4.5ft (1.3m) 10s

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


The Lowdown

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

Straight up, it's a pretty quiet start. The first real chance to get wet doesn't pop up until Thursday afternoon, September 10th. We've got a clean, clear sky and a light cross-off breeze blowing from the NNW at 6 mph. The swell is 4 ft from the north with a short 9-second period, and the combined energy is moderate at 256. The water's sitting at a warm 84°, which is dead average for this time of year. It's surfable, but it's nothing to write home about. You'll get a few, but it's very ordinary.

After that, we hit a long, frustrating stretch. From Friday the 11th right through to the afternoon of Saturday the 19th, the conditions are just cooked. Onshore winds, risk of thunderstorms, and generally poor surf. The swell stays small or comes in with messy, choppy wind. It's a serious gap of over a week where there's nothing worth paddling out for. Kite surfers might find something in that cross-onshore breeze, but for a standard surfboard, it's a write-off.

Now, here's where it gets interesting and a bit of a long-range promise. On Saturday, the 19th of September, things start to look a whole lot different. We're looking at a powerful groundswell arriving from the ESE, ramping up to 6 ft in the morning with a very long 17-second period. That's proper energy, clocking in at a massive 2074. The wind is a cross-off from the NNE at 12 mph, which is clean enough. This is the standout, but it's a solid step up in size, getting into expert territory by the afternoon when it hits 8 ft and a 3559 energy reading.

Sunday the 20th carries that theme. The morning has 8 ft of east swell with a 16-second period, and the combined energy is a huge 3632. Again, this is serious, powerful swell for experienced surfers only. The catch is the wind is a clean cross-shore from the north at 16 mph, creating a cross-chop. It's powerful, but it's going to be bumpy.

The surf then drops off quickly through Monday and Tuesday the 21st and 22nd, with a strong breeze making for clean but fading waves. By Wednesday the 23rd, it's back to tiny, weak swells and we're essentially done for the outlook period. The swell on Friday the 25th looks big again at 8 ft, but it's onshore wind, so that's a no-go.

So, the real standout is that window from Saturday the 19th through Sunday the 20th. Yonabaru is a fairly consistent, fairly exposed beginner break normally, but during this time it's going to be big, powerful, and lumpy. This is not for the faint of heart or a learner. If you've got the experience and want some serious groundswell energy, that's your only real shot in this 16-day window. Keep an eye on it, but don't get your hopes up for much else.

Rusty.

Short Range Forecast

Light rain (total 9mm), mostly falling on Fri afternoon. Warm (max 29°C on Fri morning, min 27°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 43mm), heaviest during Mon night. Warm (max 28°C on Mon morning, min 27°C on Sun afternoon). Wind will be generally light.

Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
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
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
N
9
1
N
9
0.8
NNW
8
0.7
NNW
8
0.9
SE
6
0.4
E
14
0.4
E
14
0.4
E
14
1
E
6
1.2
E
6
1.2
ESE
7
1.2
E
8
1.2
ESE
9
1.2
ESE
9
1.2
ESE
9
1.2
ESE
9
1.1
ESE
9
1.1
ESE
9
0.8
ESE
9
0.8
E
9
Wave Graph
Metric surfscale
Energy kJ
235
157
94
67
54
61
64
62
67
116
164
177
222
208
208
218
211
193
113
106
Wind (km/h)
10
NNW
10
SE
15
E
15
ESE
15
ESE
20
E
20
E
20
E
20
ENE
25
ENE
20
ENE
20
ENE
20
ENE
15
ESE
20
SSE
10
SE
15
SE
15
ESE
10
E
10
ENE
Wind State
cross-off
cross-on
on
on
cross-on
on
on
on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
High Tide
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
8:52AM2.06m
8:43PM2.13m
9:34AM1.93m
9:11PM2.07m
Low Tide
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
2:43PM0.76m
3:12AM0.42m
3:13PM0.91m
clear
clear
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
clear
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:37
6:37
6:36
6:35
6:34
6:32
 mm
2
4
2
1
2
1
8
12
7
8
4
1
2
Temp °C
28
27
29
29
27
28
28
27
27
27
27
28
27
27
28
28
27
28
28
27
Feels °C
32
32
32
32
30
31
30
30
29
28
30
29
29
29
31
31
31
32
31
31
  • Map Icons:
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  • 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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