The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 2 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.4°C
0.0° 

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 31 Aug 2026:

  • Best quality surf: Thursday 3 Sep, 6PM (local time) - 7ft (2.1m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Tuesday 8 Sep, 9AM (local time) - 11ft (3.5m), 18s period, SW swell with 6,548 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 6PM (local time) - 7ft (2.1m), 14s 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 6PM. The primary swell is predicted to be 2.1m and 14s period with a secondary swell of 0.2m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at The Island in the next 16 days are 3.5m 18s and forecast to arrive on Tuesday (Sep 08) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Sunday (Sep 06) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 3rd Sep)7ft (2.1m) 14s
Best Surf 6PM (Thu 3rd Sep)7ft (2.1m) 14s
Most Powerful 9AM (Tue 8th Sep)11ft (3.5m) 18s

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


The Lowdown

Alright folks, Rusty here. Let's get into it.

The Island is the only spot offering any surf in this 16-day window, and it's a real mixed bag. We've got a long period SW groundswell arriving, but the wind is going to be a major player for most of the run. The water temperature is sitting at 60°F, which is dead average for this time of year, so nothing unusual there.

The first real chance to get wet starts on Tuesday, 1st September, but it's nothing to write home about. The morning is a write-off with a strong 25 mph N cross-wind creating messy cross-chop on a 4ft SW swell. The afternoon is a different story, with clean 4ft waves under a light W offshore wind, but the wave energy is moderate (868). It's a bit of a tease.

We get a bit of hope on Wednesday, 2nd September. The morning session sees the swell building to 5ft from the SW with a gentler W offshore wind. The energy jumps to moderate (1270), but it's still a marginal call. The afternoon gets messy as the wind picks up to 16 mph.

Thursday, 3rd September, looks ok. The morning has 6ft SW swell with a clean W offshore wind and moderate energy (1329). The afternoon is similar but with a 7ft swell. Still, it's marginal.

Friday, 4th September, is a no-go. The morning is blown out by a 19 mph N cross-wind, and the afternoon is trashed by a strong cross-onshore, despite the moderate 6ft SW swell.

The best potential we see in the first week arrives on Saturday, 5th September. The morning has a solid 10ft SW swell, but it's a cross-onshore wind and the energy is very strong (5550). This is big, powerful swell, and with the wind being a bit messy, it's for experienced surfers only. The afternoon is better with the wind dropping to a light 6 mph, but still cross-onshore and the swell drops to 8ft. It's a standout window for the big wave crew.

Sunday, 6th September, is a bit of a head-scratcher. The morning has a clean 6ft SW swell thanks to a strong 22 mph NE cross-offshore wind. The energy is moderate (1458), but that wind is a problem. The afternoon is a loss.

The week of the 8th is where it gets interesting. Tuesday, 8th September, shows a massive pulse of energy. The morning has an 12ft SW swell with a very long 18-second period and very strong energy (12317). The wind is a moderate cross-shore, so it's messy but for a powerful, heavy reef break like The Island, that's a serious session. This is for experts only.

Wednesday, 9th September, is cleaner. The morning has a 7ft SW swell with a light cross-wind, and the afternoon is clean with a cross-offshore breeze and a 7ft swell. Good quality.

Thursday, 10th September, is a standout. The morning is clean with a cross-offshore NE wind and a 6ft SW swell. The energy is moderate (1216), but the conditions are excellent for experienced surfers.

The week of the 14th looks promising for a different reason. Monday, 14th September, has clean conditions. The morning has a 4ft WSW swell with a clean offshore E wind and low energy (458). The afternoon is better with a 3ft SW swell, clean cross-offshore wind and moderate energy (650). Expect very good surf conditions.

Tuesday, 15th September, has a 6ft SW swell with a very long 18-second period and a clean cross-offshore wind. The energy is strong (2249). This is a nice, clean swell.

Finally, Wednesday, 16th September, is a great way to finish. The morning has a 4ft SW swell with a clean offshore E wind and moderate energy (869). Expect very good surf conditions.

Overall, the best bet is the Saturday, 5th September, when the big SW groundswell arrives, but it's a big-wave day. The other standout is the Thursday, 10th September, when the conditions are clean and the swell is solid. The long-range stuff from 14th to 16th looks clean and fun, but it's less certain.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue morning, min 12°C on Tue night). Winds decreasing (fresh winds from the N on Tue morning, calm by Thu afternoon).

Days 4-6 Weather Summary

Moderate rain (total 16mm), heaviest on Sun night. Warm (max 21°C on Sun morning, min 11°C on Sat night). Winds increasing (calm on Sat afternoon, strong winds from the W by Sun afternoon).

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
2
0
0
2
2
4
1
0
0
3
2
4
2
0
3
0
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)
1.3
SW
15
1.1
SW
15
1.7
SW
16
1.6
SW
16
2.3
SW
14
2
SW
14
1.8
SW
14
2
SW
14
2.2
SW
15
2.1
SW
15
1.9
SW
15
2
SW
15
3
SW
14
2.5
SW
15
2.4
SW
16
1.8
SW
15
2.3
WSW
14
3
WSW
13
3
SW
14
2.5
SW
13
2.5
SW
18
Wave Graph
Metric surfscale
Energy kJ
763
472
1438
1265
2263
1604
1325
1536
2066
1808
1589
1718
3594
2851
2803
1441
1956
2773
3201
2399
4308
Wind (km/h)
40
N
15
W
20
SSW
15
W
25
W
25
W
15
W
15
WNW
15
E
30
N
40
NW
30
WSW
20
SW
10
SW
15
NE
35
NE
45
W
15
S
45
S
40
SSW
30
SSW
Wind State
cross
on
cross-on
on
on
on
on
on
off
cross
cross-on
on
cross-on
cross-on
cross-off
cross-off
on
cross
cross
cross
cross
High Tide
7:05PM0.00m
9:06PM0.00m
11:01PM0.00m
00:45AM0.00m
2:23AM0.00m
4:06AM0.00m
Low Tide
8:05AM-0.00m
10:05AM-0.00m
11:54AM-0.00m
1:33PM-0.00m
3:13PM-0.00m
5:01PM-0.00m
cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
light rain
rain showers
clear
part cloud
clear
clear
clear
light rain
rain showers
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:50
6:48
6:48
6:47
6:45
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:15
6:15
6:16
6:17
6:17
6:19
 mm
1
1
3
11
Temp °C
20
18
14
13
14
15
15
15
16
19
18
16
13
13
12
21
15
16
15
13
14
Feels °C
13
16
10
10
9
9
13
13
13
12
12
12
9
10
10
14
7
10
7
5
8
  • 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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