The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.5°C
0.1° 

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 14 Sep 2026:

  • Best quality surf: Thursday 17 Sep, 3AM (local time) - 5ft (1.6m), 15s period, SW swell with offshore winds.
  • Most powerful swell: Wednesday 16 Sep, 3AM (local time) - 6.5ft (2.0m), 15s period, SW swell with 1,672 kJ wave energy.
  • Next surfable swell (1★+): Thursday 17 Sep, 3AM (local time) - 5ft (1.6m), 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 17) at 3AM. The primary swell is predicted to be 1.6m and 15s period with a secondary swell of 0.2m and 16s. 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 2.0m 15s and forecast to arrive on Wednesday (Sep 16) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Sep 15) at 3PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 17th Sep)5ft (1.6m) 15s
Best Surf 3AM (Thu 17th Sep)5ft (1.6m) 15s
Most Powerful 3AM (Wed 16th Sep)6.5ft (2.0m) 15s

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


The Lowdown

Alright, let's get into it.

This is The Island, a reef break that's consistent and exposed to the southwest swell. We’ve got a bit of a slow start here, but there’s some real potential if you time it right. Water temp is pretty average for this time of year, nothing unusual there.

First up, we’ve got a bit of a wait. Tuesday the 15th sees some solid swell pushing through, with waves around 6ft to 7ft from the SW. That combined swell energy is strong, sitting at 1319 and climbing to 1649. But here’s the kicker: the wind is a fresh cross-offshore, so the faces will be clean. Still, the scores aren't top-tier, so it’s a bit of a gamble. Not quite a standout, but a fun option if you’re keen.

Wednesday the 16th morning is where it starts to look a bit better. We’ve got 6ft SW swell with a 15-second period – that’s proper groundswell, long and powerful. The wind swings to the ESE, blowing straight offshore at 19 mph. That’s going to groom it into some clean, lined-up waves. The energy is high at 1587. This is the best window in the first few days. If you can get out Wednesday morning, you’ll be rewarded.

Thursday the 17th drops off a bit. Swell backs down to 4ft, and the wind goes cross-off. It’s still surfable, but nothing to write home about. By Friday the 18th, we’re into poor surf with dropping energy and messy winds. That trend continues right through the weekend and into early the next week. There’s a real lull from Friday the 18th through to Sunday the 20th – a few days of poor conditions where you’re better off doing something else.

Then Monday the 21st morning shows some promise again. Swell picks back up to 5ft from the SW, and the wind is light offshore from the ESE at just 6 mph. That’s glassy conditions. The energy is moderate at 856. This could be a sneaky good session if the tide lines up.

But the real standout, the one you want to circle on your calendar, is Saturday the 26th. The morning session is packing 8ft of SW swell with a 19-second period – that’s a very long period groundswell, heaps of energy. The combined energy is a massive 4553. That’s strong. The wind is a moderate cross-off from the ESE at 16 mph, keeping it clean. This is big, powerful surf. For experienced surfers only, that’s the call. The reef will handle it, but it’s not for the faint-hearted. The afternoon gets even bigger at 10ft but gets a bit lumpy with the cross-wind. Stick to the morning.

Then Tuesday the 29th morning is another gem. Swell drops to 3ft but it’s a long 18-second period, and the wind is nearly glassy from the SSE at just 3 mph. The energy is still solid at 1016. This is a day for clean, long lines. Perfect for a longboard or a fish.

Overall, Wednesday the 16th morning and Saturday the 26th morning are your two best bets. The 26th is the big one – huge swell, long period, and clean. It’s a true standout.

Rusty

Short Range Forecast

Mostly dry. Very mild (max 17°C on Thu afternoon, min 8°C on Tue night). Winds decreasing (strong winds from the SSE on Tue afternoon, light winds from the N by Thu morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 30°C on Sat afternoon, min 14°C on Sun afternoon). Winds increasing (light winds from the NNE on Fri afternoon, fresh winds from the N by Sat morning).

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
2
3
2
3
2
1
1
0
0
0
0
0
0
0
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
16
1.7
SW
15
2
SW
14
1.9
SW
14
1.9
SW
15
1.8
SW
15
1.7
SW
15
1.3
SW
14
1.1
SW
14
0.9
SW
13
0.8
SW
15
0.8
SW
15
0.6
SW
14
0.6
SW
13
0.4
SW
18
1.4
WSW
17
0.8
SW
16
1.9
SW
13
1.6
SW
14
Wave Graph
Metric surfscale
Energy kJ
823
1297
1649
1521
1568
1491
1306
726
478
248
322
258
164
111
84
1146
302
1242
951
Wind (km/h)
20
SSW
35
SE
35
SSE
30
ESE
30
ESE
30
SSE
25
E
20
NE
10
SSW
15
NE
30
N
15
NNW
20
NNE
35
N
25
N
30
NNW
20
W
25
SW
10
S
Wind State
cross
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
cross
cross-off
cross
cross-on
cross-off
cross-off
cross
cross-on
on
cross-on
cross
High Tide
6:53PM0.00m
9:04PM0.00m
10:53PM0.00m
00:26AM0.00m
1:55AM0.00m
Low Tide
5:44AM-0.00m
8:00AM-0.00m
10:01AM-0.00m
11:41AM-0.00m
1:10PM-0.00m
2:43PM-0.00m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:28
6:28
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:23
6:24
6:24
6:25
6:27
6:27
 mm
Temp °C
16
12
13
11
13
15
12
16
17
19
20
25
25
26
30
28
16
15
16
Feels °C
12
5
6
4
8
9
5
13
13
14
13
20
19
17
24
21
13
11
14
  • 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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