The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 am 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
16.0°C
0.7° 

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 3 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 3AM (local time) - 6ft (1.9m), 18s period, SW swell with offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 3PM (local time) - 8ft (2.4m), 19s period, SW swell with 4,178 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 9PM (local time) - 7ft (2.2m), 15s 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 Thursday (Sep 03) at 9PM. The primary swell is predicted to be 2.2m and 15s period with a secondary swell of 0.2m and 17s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at The Island in the next 16 days are 2.4m 19s and forecast to arrive on Wednesday (Sep 09) 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 1.2m 5s period and expected on Monday (Sep 07) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 3rd Sep)7ft (2.2m) 15s
Best Surf 3AM (Tue 8th Sep)6ft (1.9m) 18s
Most Powerful 3PM (Wed 9th Sep)8ft (2.4m) 19s

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


The Lowdown

G’day, I’m Rusty. Let’s talk surf.

The only spot on the radar for this 16-day run is The Island, a consistent advanced reef break that’s exposed to the SW. Water temp is sitting at 61°F, which is about average for this time of year – no real surprise there.

We’re looking at a bit of a slow start, with a couple of days of pretty average conditions. Thursday the 3rd has some size – around 6ft to 7ft from the SW – but the wind is straight onshore from the WNW at 9 mph, and that energy is strong at 1329, so the ocean’s got power, but it’s messy. Not much to get excited about there. Friday the 4th is even worse: the swell jumps to 8ft SW, with a long 16-second period, and the cross-off wind is howling at 22 mph from the NNE. The combined energy is huge at 2448, but that onshore cleanup on Friday afternoon is going to ruin it.

Saturday the 5th is a write-off. We’ve got 8ft to 10ft SW swell, but the wind is cross-onshore and strong, and the energy is absolutely pumping (2515 to 5212). That amount of power with that wind direction is going to be a washing machine – more of a kite-surfing setup than a paddle session.

Now, here’s where it gets interesting. Sunday the 6th is your standout. Morning session is the one. We’ve got a solid 6ft SW swell (14-second period, nice groundswell), but the magic is the offshore wind from the ENE at just 9 mph. Gentle offshore and clean, and the combined energy is a healthy 1363. This is excellent surf for experienced surfers – the reef will be working, and with that light offshore, expect clean, lined-up walls. Crowds are only *sometimes* an issue here, so you might luck out. This is the best clean swell window in the whole forecast.

Monday the 7th drops right off – swell down to 3ft, barely a ripple, with fresh cross-off winds. Not worth a paddle.

Then things get a bit more promising again mid-week. Tuesday the 8th has a 7ft SW swell with a very long 17-second period. The energy is strong at 2265, and the wind is cross-off from the ESE at 16 mph, keeping things clean. The period is long, which at a reef break like The Island is actually a bonus – expect proper groundswell lines with long gaps between sets. That’s good for paddling out, but remember, long-period swells can make beach breaks close out; on a reef, they’ll hold up nicely.

Wednesday the 9th is another one to circle. Morning has offshore wind from the ESE at 19 mph, with a 4ft SW swell that has an epic 21-second period. Energy is very strong at 2909. That’s an incredibly long period for that size – it’ll be smooth, powerful, and hollow on the reef. The afternoon ramps up to 8ft SW with a 19-second period and 4216 energy. Wind stays cross-off. This is high-end groundswell, and if you can handle the power, it’s going to be world-class.

After that, the second week gets messy. Thursday the 10th to Saturday the 12th has some marginal windows with cross-off winds and moderate swell (4ft to 7ft) but the energy and wind combinations aren’t as clean. Sunday the 13th onwards is mostly poor – strong onshore winds, lumpy conditions, and the swell goes up and down. There’s another flicker on Tuesday the 15th morning: 6ft SW, 15-second period, light offshore from the ESE at 6 mph, and excellent surf conditions for experienced surfers again. That’s your second standout, but it’s over a week away, so it’s promising but less certain.

Bottom line: If you’ve got a window, Sunday the 6th morning and Tuesday the 15th morning are your best bets. Wednesday the 9th is for the experienced crew who want to test themselves on some serious groundswell. The rest of the run is either too windy, too small, or too messy to get excited about.

Stay safe, and keep an eye on that wind.

Rusty

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 21°C on Fri morning, min 10°C on Sat night). Winds decreasing (strong winds from the W on Fri night, calm by Sat night).

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Tue morning. Very mild (max 15°C on Mon afternoon, min 10°C on Sun morning). Winds increasing (light winds from the ESE on Sun morning, strong winds from the SE by Mon afternoon).

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
4
1
0
0
0
0
4
4
2
1
0
1
3
3
2
2
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SW
14
2
SW
14
2.3
SW
15
2.3
SW
16
2.1
SW
15
2
SW
15
2.5
SW
14
3
SW
14
2.2
SW
14
1.8
SW
14
1.6
SW
14
1.2
SW
13
0.9
SW
13
0.6
SW
20
1.9
SSW
18
2
SW
17
1.9
SW
16
1.5
SW
16
1.3
SW
21
2.4
SW
19
2.3
SW
17
Wave Graph
Metric surfscale
Energy kJ
1325
1558
2259
2421
1951
1741
2509
3275
1796
1152
1063
503
286
295
2456
2259
1780
1068
1455
4178
3039
Wind (km/h)
15
WNW
15
WNW
15
ENE
35
NNE
20
WNW
35
W
35
WSW
25
SW
5
S
15
ENE
15
S
35
SE
35
ESE
35
SSE
30
ESE
25
ESE
30
SE
30
ESE
30
ESE
20
ESE
35
E
Wind State
on
on
off
cross-off
cross-on
on
cross-on
cross-on
glassy
off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
High Tide
11:01PM0.00m
00:45AM0.00m
2:23AM0.00m
4:06AM0.00m
6:00AM0.00m
8:01AM0.00m
Low Tide
10:05AM-0.00m
11:54AM-0.00m
1:33PM-0.00m
3:13PM-0.00m
5:01PM-0.00m
7:01PM-0.00m
9:00PM-0.00m
clear
clear
part cloud
part cloud
light rain
rain showers
part cloud
cloud
clear
clear
clear
cloud
cloud
part cloud
part cloud
light rain
cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:48
6:47
6:45
6:43
6:43
6:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:16
6:17
6:17
6:19
6:19
6:20
 mm
2
1
2
Temp °C
15
15
15
21
19
17
14
13
12
14
14
13
14
15
12
11
13
12
16
20
15
Feels °C
13
13
13
15
16
12
7
8
9
11
10
7
8
7
5
5
6
5
10
14
7
  • 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 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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