The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 am 15 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 15 Aug 2026:

  • Best quality surf: Saturday 15 Aug, 3PM (local time) - 6ft (1.8m), 16s period, SW swell with offshore winds.
  • Most powerful swell: Saturday 22 Aug, 6AM (local time) - 7.5ft (2.3m), 15s period, SW swell with 2,381 kJ wave energy.
  • Next surfable swell (1★+): Saturday 15 Aug, 3PM (local time) - 6ft (1.8m), 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 Saturday (Aug 15) at 3PM. The primary swell is predicted to be 1.8m and 16s 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 2.3m 15s and forecast to arrive on Saturday (Aug 22) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Aug 17) at 12AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Sat 15th Aug)6ft (1.8m) 16s
Best Surf 3PM (Sat 15th Aug)6ft (1.8m) 16s
Most Powerful 6AM (Sat 22nd Aug)7.5ft (2.3m) 15s

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


The Lowdown

G'day, Rusty here. Let's have a look at the Island. The next couple of weeks are a bit of a mixed bag, but there are a few windows of quality.

The run starts off strong. This Saturday the 15th, the Island is pumping. We've got a solid 7ft groundswell out of the southwest, with a very long period of 16 seconds, and the easterly offshore breeze is keeping it clean all day. The combined swell energy is strong at 1915, and the water temp is sitting at 59°, which is pretty much average for this time of year, so nothing weird there. This is world-class reef action for advanced surfers only – that size and power isn't for the faint-hearted. Sunday the 16th stays clean in the morning with a 5ft southwest swell, but it begins to drop off. Monday the 17th also has a clean morning with a good 3ft southwest swell, but the wind shifts cross-offshore in the afternoons and the quality dips.

There’s a bit of a lull mid-week. Tuesday the 18th through Wednesday the 19th is where things go sour. The wind swings onshore and gets messy, so you're better off sitting this one out. The surf quality takes a nosedive.

Then we get a little gem on Thursday the 20th. The morning is glassy with a 5ft southwest groundswell (16 seconds) and combined energy at a solid 900. That's a proper session for the crew who can sneak out mid-week.

Now, the standout window is the weekend of the 22nd and 23rd, but especially Saturday the 22nd. The afternoon sees a clean 7ft southwest swell (15 second period) with a gentle cross-offshore breeze, and the combined energy is pumping at 2175. That's excellent for experienced surfers, and it’s the pick of the forecast. Sunday the 23rd is a step down with onshore winds.

The next big one to mark on your calendar is Monday the 24th of August. That morning is a true highlight: 8ft of southwest groundswell at 18 seconds – that's a very long period – and a clean cross-offshore breeze. The combined energy is massive at 3880. This is big, powerful, and only for the experts.

After that, it's a long, ugly stretch. From Tuesday the 25th all the way through to Sunday the 30th, the Island gets hammered by strong, onshore winds and a lot of windswell. The wave quality is poor, and the combined energy stays moderate to strong but it's all blown out. From the 25th onwards, it's a write-off for paddle surfing. The setup looks more interesting for kite surfing than paddle surfing with those strong cross-shore and onshore winds.

So, to sum it up: your best bets are this Saturday the 15th and next Saturday the 22nd, with Monday the 24th being the biggest and most promising, but also the most dangerous. The rest of the window is a long wait for the next clean one.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sun morning, min 12°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the N on Tue morning, calm by Thu morning).

Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
3
2
3
3
3
3
1
1
0
0
0
1
3
1
3
0
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)
2
SW
16
1.8
SW
16
1.6
SW
15
1.4
SW
14
1.3
SW
14
1.2
SW
14
1
SW
16
1.3
SW
16
1.1
SW
15
1.2
SW
17
1.1
SW
17
0.9
SW
16
1.1
SW
15
1
SW
15
1
SW
15
1.4
SW
16
1.3
SW
16
1.4
SW
16
2
SW
17
2
SW
16
2
SW
16
Wave Graph
Metric surfscale
Energy kJ
1895
1474
1011
825
726
549
492
875
535
861
611
437
499
424
418
894
803
952
2293
1953
1919
Wind (km/h)
20
ESE
15
E
20
E
20
E
25
SE
25
E
20
E
15
SSE
15
ENE
30
NNE
35
NNE
25
WNW
25
W
20
WSW
10
WSW
5
WSW
10
WSW
10
WSW
25
WNW
35
SSW
25
S
Wind State
off
off
off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
on
on
cross-on
on
glassy
on
cross-on
on
cross
cross
High Tide
1:53PM0.00m
3:27PM0.00m
5:12PM0.00m
9:38PM0.00m
11:43PM0.00m
1:24AM0.00m
Low Tide
2:40AM-0.00m
4:17AM-0.00m
6:13AM-0.00m
8:29AM-0.00m
10:44AM-0.00m
12:36PM-0.00m
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
rain showers
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:11
7:11
7:09
7:07
7:07
7:05
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:04
6:05
6:06
6:06
6:07
6:07
 mm
1
Temp °C
14
15
15
16
16
14
15
15
16
19
18
15
15
14
14
13
13
13
14
13
13
Feels °C
9
11
11
12
10
8
12
11
12
11
10
10
10
10
11
11
10
10
9
6
6
  • 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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