The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.3°C
0.2° 

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 6 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 12AM (local time) - 5.5ft (1.7m), 18s period, SW swell with offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 12PM (local time) - 8ft (2.5m), 18s period, SW swell with 3,927 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 6AM (local time) - 3.5ft (1.1m), 13s 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 Monday (Sep 07) at 6AM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 0.4m and 5s. 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 2.5m 18s and forecast to arrive on Wednesday (Sep 09) at 12PM. 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 6s period and expected on Wednesday (Sep 09) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 7th Sep)3.5ft (1.1m) 13s
Best Surf12AM (Tue 8th Sep)5.5ft (1.7m) 18s
Most Powerful12PM (Wed 9th Sep)8ft (2.5m) 18s

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


The Lowdown

Alright folks, Rusty here. Let’s have a proper look at what’s coming up for The Island over the next couple of weeks. This spot is a consistent, exposed reef break that loves a good SW groundswell, and we’ve got plenty of that on the cards. Water temp is sitting at 60°, which is pretty much bang on average for this time of year, so no shock to the system.

We start the period with a bit of a slow grind. Sunday the 6th has a solid 6 ft SW swell with a very impressive 1242 combined energy, but the wind is a cross-off at 12 mph and it’s flagged as marginal. It’s rideable, but it’s not the cleanest. Monday the 7th is a write-off, with a messy 19 mph cross-off wind in the afternoon and a low score, so I’d skip that.

Now, Tuesday the 8th is where it starts to get interesting. The morning brings a beautiful 6 ft SW groundswell with a long period of 17 seconds and combined energy hitting 1801. That’s a serious push of energy, and with a gentle 9 mph cross-off breeze, the face should be clean and lined up. This is prime for the experienced crew – that size and period will have plenty of power. The afternoon bumps up to 8 ft SW with a 16-second period and a massive 4415 energy reading. That’s a lot of water moving. It’s still cross-off, but the quality drops to marginal; at that size, it’s strictly for the experts and you’ll want your wits about you.

Wednesday the 9th is a no-go. The swell holds in the 6 ft to 8 ft range with even bigger energy numbers, but that strong 25 mph SE wind will chop it to pieces. Not worth paddling out.

The real standout, the one I’d be circling, is Friday the 11th in the afternoon. We get a 4 ft SW groundswell with a 15-second period – not the biggest, but the wind drops to a dead calm 3 mph from the east, going glassy. Combined energy is still a decent 723. That’s pure, clean, glassy conditions on a reef that loves SW swell. The wave quality is flagged as very good. This will be a dream session for the intermediate and above crew, and the crowd potential is only “sometimes,” so you might even get some waves to yourself.

Saturday the 12th and Sunday the 13th are a mess. Strong cross-shore and onshore winds blow the surf out, with waves dropping under 3 ft. Not your weekend.

We get a little reset early in the second week. Tuesday the 15th morning has a solid 6 ft SW groundswell with a 14-second period, combined energy of 1278, and a gentle offshore breeze from the ESE. That’s clean and punchy, scored as excellent for experienced surfers. A proper morning session if you can get out.

Then we hit a long, quiet stretch. From Wednesday the 16th afternoon through to Sunday the 20th, the winds turn mostly onshore or cross-on, and while there’s still some swell, the quality plummets. Many days score zero. It’s a proper lull.

But hold onto your leash, because Monday the 21st is a long-range gem worth knowing about. The morning brings a 8 ft SW swell with a 16-second period and a massive 3864 combined energy, with clean cross-off winds. Then the afternoon goes nuclear: 8 ft SW with a massive 21-second period and combined energy of 5980. That’s very long-period groundswell. At this size and period, The Island will be a powerful, heaving reef – absolutely for experts only. The wind stays clean with a moderate cross-off. This is a serious, heavy swell event that’s worth planning for, but remember it’s a long way out so things can change.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Tue afternoon. Very mild (max 15°C on Mon afternoon, min 10°C on Wed morning). Winds increasing (light winds from the ESE on Tue morning, strong winds from the SE by Wed morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Sat afternoon, min 8°C on Wed night). Winds decreasing (fresh winds from the E on Thu night, light winds from the SSE by Fri afternoon).

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
1
4
3
1
2
2
2
3
3
3
3
2
3
2
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
SW
13
1
SW
13
1.2
SSW
13
1.7
SW
18
1.8
SW
17
1.8
SW
16
1.8
SW
16
2.2
SW
19
2.5
SW
18
2.4
SW
16
2
SW
16
1.8
SW
16
1.5
SW
15
1.3
SW
15
1.3
SW
15
1.2
SW
16
1.1
SW
16
0.8
SW
15
1.1
SW
18
Wave Graph
Metric surfscale
Energy kJ
780
330
479
1925
1795
1611
1552
3333
3753
2902
1968
1513
949
677
715
728
532
269
679
Wind (km/h)
25
SE
25
ESE
25
SSE
25
E
15
ESE
30
S
35
SE
45
SE
40
SE
30
ESE
25
E
25
SE
25
E
20
NE
10
SSE
20
NE
25
N
15
NNW
25
NNE
Wind State
cross-off
off
cross-off
off
cross-off
cross
cross-off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-off
High Tide
4:06AM0.00m
6:00AM0.00m
8:01AM0.00m
9:54AM0.00m
11:33AM0.00m
1:05PM0.00m
Low Tide
5:01PM-0.00m
7:01PM-0.00m
9:00PM-0.00m
10:44PM-0.00m
00:19AM-0.00m
1:52AM-0.00m
clear
part cloud
part cloud
part cloud
cloud
light rain
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:43
6:41
6:39
6:39
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:17
6:19
6:19
6:20
6:21
6:21
6:22
 mm
1
Temp °C
13
14
15
13
13
13
13
12
13
10
14
19
15
17
18
20
21
24
24
Feels °C
8
10
9
7
9
7
7
3
4
4
9
13
8
14
15
15
15
19
18
  • 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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