The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 2 am 27 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 26 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 6PM (local time) - 6ft (1.8m), 18s period, SW swell with cross-offshore winds.
  • Most powerful swell: Friday 28 Aug, 12AM (local time) - 6ft (1.9m), 18s period, SW swell with 2,216 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 6PM (local time) - 6ft (1.8m), 18s 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 (Aug 27) at 6PM. The primary swell is predicted to be 1.8m and 18s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at The Island in the next 16 days are 1.9m 18s and forecast to arrive on Friday (Aug 28) at 12AM. 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 Thursday (Aug 27) at 6AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 27th Aug)6ft (1.8m) 18s
Best Surf 6PM (Thu 27th Aug)6ft (1.8m) 18s
Most Powerful12AM (Fri 28th Aug)6ft (1.9m) 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.

We’ve got one spot on the radar for this whole 16-day window: The Island. It’s a consistent reef break that’s exposed to a SW swell, and it really needs that direction to line up. The water temp is sitting pretty average for this time of year, so nothing wild there.

The forecast kicks off Thursday the 27th of August, but honestly, it’s a rough start. A fresh 19 mph cross-shore wind is messing things up, leaving the surf poor and lumpy. The combined swell energy is a moderate 754, but it’s not worth your time. The afternoon cleans up a little with a gentle breeze, but the wave energy jumps to a strong 1423, and it’s still only marginal. Not a great day to paddle out.

Friday the 28th brings a bit more size, with 6.0 feet of SW swell and a long 16-second period, but the wind is messy—cross-off in the morning with a moderate breeze, and cross-on in the afternoon. The energy is strong (1617 and 1229), but the conditions are just marginal. It’s a hard pass.

The first real glimmer of hope shows up Saturday the 29th. The morning is clean, with a light cross-off breeze from the NE and a manageable 3.6 feet of SW swell. The energy drops to a moderate 532, but the conditions are clean. It’s not huge, but it’s workable. The afternoon loses the plot with a cross-shore wind.

Sunday the 30th is a similar story—clean morning with a 2.0 feet SW swell, but the period is a very long 19 seconds. That’s groundswell, which tends to make waves break a bit straight at beach breaks, but on a reef like The Island, it can be fun. The energy is moderate (450). It’s a small, clean session.

Now, Monday the 31st is where things get interesting. The swell jumps to 6.0 feet from the SW with a 19-second period, and the energy is cranking at 2221—strong stuff. The morning wind is a moderate cross-off from the NNE, keeping it clean. This is a solid option for experienced surfers. The afternoon has a light cross-on breeze, so the morning is the pick.

Tuesday the 1st of September is a write-off. A fresh 22 mph cross-shore wind and lumpy chop make it poor. The energy is moderate (769) but not worth the hassle.

Then, Wednesday the 2nd of September is a standout. The morning is glassy—dead calm, 3 mph from the W—with a 4.3 feet SW swell and a 15-second period. The energy is moderate (737), but the conditions are clean as a whistle. That’s a fantastic morning session, but it’s not huge. The afternoon turns onshore and messy.

The next big run starts brewing around Friday the 4th of September. The morning has 6.2 feet of SW swell with a 14-second period and a strong energy of 1309. The wind is a gentle cross-shore, so it’s marginal but workable. The afternoon gets bigger—7.5 feet of SW swell, 15-second period, and energy of 2497. The wind is light cross-on, so it’s a bit messy, but the size is there.

Saturday the 5th keeps the size. Morning sees 6.0 feet of SW swell with a clean cross-off wind from the SE. The energy is strong at 1381. The afternoon bumps to 7.5 feet from the WSW, but the wind turns cross-shore and creates a chop. The morning is the better bet.

Now, the real heavy stuff comes in Sunday the 6th of September. The swell is 8.2 feet from the SW, with a 16-second period, and the energy is very strong (3351 and 3464). The wind is bad—cross-on in the morning, cross-shore in the afternoon—so conditions are poor. This is big, messy, and only for experts.

Monday the 7th of September is excellent. The wind is a light offshore from the ENE at just 3 mph, with a 7.5 feet SW swell and a 16-second period. The energy is 2935. The conditions are clean. This is a true standout for experienced surfers. The afternoon is also clean with a cross-off breeze and 8.2 feet of swell, but the direction shifts slightly to WSW.

Tuesday the 8th of September is the absolute best day on offer. The morning has 9.8 feet of SW swell, a 16-second period, and a very strong energy of 4084. The wind is a clean cross-off from the NE. The afternoon is glassy, with a 8.2 feet SW swell, a 17-second period, and energy of 4200. That’s a world-class window for experts. The waves will be powerful, long-period groundswell, so the reef will handle it beautifully.

Short Range Forecast

Mostly dry. Warm (max 22°C on Thu afternoon, min 15°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Mon afternoon, min 13°C on Tue night). Winds increasing (light winds from the ESE on Sun morning, strong winds from the NNW by Tue morning).

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
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
3
3
2
3
3
3
1
2
2
1
4
3
2
2
0
0
0
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)
1.1
SW
14
1.1
SW
19
1.9
SW
18
1.8
SW
16
1.6
SW
16
1.3
SW
14
1.1
SW
14
1
SW
13
0.9
SW
13
0.6
SW
19
0.8
SW
19
1.4
SW
17
1.8
SW
19
1.8
SW
18
1.5
SW
16
1.2
SW
16
1.3
SW
17
1.8
SW
16
1.3
SW
15
1.5
SW
14
1.4
SW
14
Wave Graph
Metric surfscale
Energy kJ
466
817
2216
1611
1317
676
507
342
273
236
499
1147
2216
1880
1109
719
929
1552
763
865
799
Wind (km/h)
30
N
15
N
20
ENE
25
N
10
WNW
15
E
15
ENE
15
S
20
E
15
ENE
15
S
15
E
20
NNE
10
NNW
30
N
40
NNW
25
W
20
SW
25
W
25
W
10
NNW
Wind State
cross
cross
cross-off
cross-off
on
off
cross-off
cross
off
off
cross
off
cross-off
cross-on
cross-off
cross
on
cross-on
on
on
cross
High Tide
10:24AM0.00m
12:18PM0.00m
1:57PM0.00m
3:31PM0.00m
5:12PM0.00m
7:05PM0.00m
9:06PM0.00m
Low Tide
1:09AM-0.00m
2:44AM-0.00m
4:20AM-0.00m
6:07AM-0.00m
8:05AM-0.00m
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:56
6:54
6:54
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:12
6:13
6:14
6:14
6:15
6:15
 mm
Temp °C
19
22
22
20
22
21
21
21
20
20
20
19
19
22
21
21
18
14
14
14
14
Feels °C
13
19
17
15
19
17
19
17
15
18
16
15
15
18
15
13
13
11
9
9
12
  • 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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