The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
14.9°C
0.6° 

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


The Island surf forecast from 27 Aug 2026:

  • Best quality surf: Friday 28 Aug, 3PM (local time) - 5ft (1.5m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Friday 4 Sep, 12AM (local time) - 7ft (2.1m), 17s period, SW swell with 2,592 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 3PM (local time) - 5ft (1.5m), 16s period with SW swell.

Best Forecast Surf Conditions for The Island this week:

The surf forecast for The Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 28) at 3PM. The primary swell is predicted to be 1.5m and 16s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at The Island in the next 16 days are 2.1m 17s and forecast to arrive on Friday (Sep 04) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Aug 30) at 12AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Fri 28th Aug)5ft (1.5m) 16s
Best Surf 3PM (Fri 28th Aug)5ft (1.5m) 16s
Most Powerful12AM (Fri 4th Sep)7ft (2.1m) 17s

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


The Lowdown

Alright, listen up, gang. Rusty here with the full picture for The Island. We've got a run that starts with some promise and then really fires up, so pay attention.

We're kicking off with a solid push of SW groundswell, but the winds are a bit tricky. Friday the 28th gives us a 6ft SW swell, with a 16-second period, and the energy is cranking at 1658. The morning is a little scrappy with a cross-off breeze, but the afternoon cleans right up with lighter wind – 5ft and clean. It's not the best, but it's a start.

Saturday the 29th drops a bit to 4ft, but the morning wind turns offshore from the ENE. That'll mean clean, fun lines. The energy is still moderate at 532. Sunday the 30th has a tiny 2ft swell but with a very long 20-second period – proper groundswell. The wind is offshore again, so if you're on a longboard, you might find a few gems.

Monday the 31st jumps back to 6ft with a 19-second period, and the energy is strong at 2175. The morning is clean, but the afternoon gets cross-shore chop. Then things go south for a few days. Tuesday the 1st and Wednesday the 2nd of September are mostly a washout with strong onshore winds and messy conditions. Thursday the 3rd isn't much better.

Now, here's the one you've been waiting for. Circle Friday the 11th of September. This is the session. We're looking at a massive 12ft SW groundswell, with an 18-second period – that's deep, long-period energy. The combined energy is an insane 13004 – that's a lot of power. And the wind? A light offshore breeze from the east at just 3 mph. This is a consistent reef break, exposed to the SW. The morning is being called exceptional for experts. This is big, clean, and heavy. It's for experienced surfers only, because anything over 8ft gets serious. The afternoon stays solid at 8ft with a glassy surface.

The days leading up to it are a bit of a battle. We've got days like the 4th and 5th with sizeable swell but onshore or cross-onshore winds, making it a choppy mess. At a beach-and-reef setup like this, that kind of wind and size might be better suited for the kite surfers.

After that Friday blast, Saturday the 12th sees the swell drop to 7ft but with onshore wind, so it'll be a step down.

So, to sum it up: the first week has some clean but smaller windows. The absolute standout, no question, is the morning of Friday the 11th of September at The Island – massive, clean, long-period groundswell with perfect offshore wind. That's your day to get after it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Fri afternoon, min 17°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Wed morning). Winds increasing (light winds from the NNE on Mon afternoon, strong winds from the N by Tue morning).

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
4
3
3
2
2
2
2
4
3
3
3
0
0
0
1
0
1
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
SW
18
1.8
SW
16
1.5
SW
16
1.3
SW
14
1.1
SW
14
1
SW
13
1
SW
13
0.6
SW
20
0.8
SW
19
1.5
SW
17
1.8
SW
19
1.8
SW
18
1.5
SW
16
1.3
SW
16
1.1
SW
15
1.7
SW
16
1.3
SW
16
1.5
SW
15
1.2
SW
14
Wave Graph
Metric surfscale
Energy kJ
2216
1652
1101
676
507
342
321
239
504
1267
2146
1880
1096
875
505
1438
864
1028
534
Wind (km/h)
20
NE
20
NNE
10
NNE
20
ENE
15
ENE
15
SE
20
E
15
E
10
S
20
E
20
NNE
10
N
25
NNE
40
N
25
NW
25
SW
15
W
20
WSW
15
W
Wind State
cross-off
cross-off
cross-off
off
off
cross-off
off
off
cross
off
cross-off
cross
cross-off
cross
cross-on
cross-on
on
cross-on
on
High Tide
12:18PM0.00m
1:57PM0.00m
3:31PM0.00m
5:12PM0.00m
7:05PM0.00m
9:06PM0.00m
Low Tide
1:09AM-0.00m
2:44AM-0.00m
4:20AM-0.00m
6:07AM-0.00m
8:05AM-0.00m
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:54
6:54
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:12
6:13
6:14
6:14
6:15
6:15
 mm
Temp °C
22
21
24
22
20
22
20
19
20
19
20
22
21
22
24
15
14
14
14
Feels °C
17
16
22
18
17
18
15
18
18
15
15
19
16
14
18
11
11
10
12
  • 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 The Island Surf forecast

The above surf forecast table for The Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Island can be found by selecting the local surf guide option on the grey menu. Our The Island 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 (The Island) 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 The Island 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.

Are you planning a holiday in Eyre Peninsula? If you are looking for accommodation near The Island, camping, hotels and holiday cottages in Eyre Peninsula, consider staying in Thevenard which is 111 km (69 miles) away.

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