The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 am 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.2°C
0.3° 

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 25 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: Sunday 30 Aug, 9PM (local time) - 6ft (1.9m), 18s period, SW swell with 2,293 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 9PM (local time) - 5ft (1.5m), 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 Tuesday (Aug 25) at 9PM. The primary swell is predicted to be 1.5m and 14s period with a secondary swell of 0.1m and 14s. 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 Sunday (Aug 30) at 9PM. Winds are predicted to be 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 Saturday (Aug 29) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 25th Aug)5ft (1.5m) 14s
Best Surf 6PM (Thu 27th Aug)6ft (1.8m) 18s
Most Powerful 9PM (Sun 30th Aug)6ft (1.9m) 18s

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


The Lowdown

Alright, grab your board. The next couple of weeks at The Island are a mixed bag, but there's some proper grunt on the way if you're willing to be patient. The week starts pretty average, but it builds into some excellent, clean conditions for the experienced crew, especially towards the end of the first week and into the second.

We've got a solid run of SW groundswell hitting this exposed reef break. Right now, Tuesday the 25th of August morning is a bit of a write-off—cross-shore wind, lumpy 7ft swell (combined energy of 2009), and it's pretty messy. It's a pass for me. The afternoon cleans up a touch but is still cross-onshore and choppy. Not worth the paddle.

Wednesday the 26th of August morning gets interesting. It drops to 4ft SW, but the wind swings NNE and goes cross-offshore, cleaning it right up. The combined energy is moderate at 556, but it feels like a proper sneaky session. That's a nice window for the advanced surfers. The afternoon weakens and gets a little bumpy.

The real stand-out is Friday the 28th of August afternoon. We've got a clean 5ft SW swell with a proper 16-second period, cross-offshore breeze from the NE, light wind, and the combined energy is sitting at 1106. The forecast calls it excellent for experienced surfers, and I’m backing that. That’s the session to aim for. You'll be trading waves with a few others, as crowds are sometimes around, but for a reef wave like The Island, that quality is worth the company.

Saturday the 29th of August morning is clean with an offshore ENE breeze, but it's smaller at 4ft. Sunday the 30th of August has a real standout morning—glassy offshore E wind, a long period 20-second swell at 2ft, combined energy of 521. It's small but straight as a die. The afternoon jumps to 5ft with a long 19-second period, but the wind goes cross-off.

Monday the 31st of August morning keeps it going with 6ft SW and a cross-offshore breeze, but the water temp is sitting at 59°, which is just about average for this time of year. Not warm, but not a shocker.

Then the first few days of September get a bit windy and messy. Not much to write home about until Thursday the 3rd of September morning and afternoon, which both see clean, cross-offshore conditions on a building 5-6ft SW swell. The combined energy is climbing well (1236-1785). Solid, powerful, clean groundswell.

The absolute pick of the entire outlook is Saturday the 5th of September morning. Glassy as a mirror, a light WNW breeze, 4ft SW swell with a 14-second period, and the combined energy is a punchy 1283. The forecast calls it excellent for experienced surfers. It's over a week away, so keep an eye on it, but if it holds, it’s a real beauty. The afternoon gets a bit blown out with onshore wind and a bigger 7ft swell.

There's another solid window on Tuesday the 8th of September morning—a tiny 3ft swell but with a very long 20-second period, glassy conditions, and combined energy of 1071. That's a sneaky, clean long-period groundswell that'll peel perfectly down the reef, though it might be a bit sleepy between sets.

Wednesday the 9th of September gets a big dose of swell (7ft and 7ft) but the wind is howling at 25-28 mph. It's cross-offshore, so some spots will be howling, but it's going to be a battle. The combined energy is massive (2887), but only the experts with a death wish and a step-up will be out there. For most, that's a kitesurfer's dream, not a paddle surfer's.

So, in short: Friday 28th August afternoon and Saturday 5th September morning are your standout sessions. Don't sleep on Wednesday 26th morning or Tuesday 8th morning either. The rest is either a bit too windy, too small, or too big and wild.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Fri afternoon, min 15°C on Sun morning). Wind will be generally light.

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
3
2
0
1
0
3
3
3
4
3
2
1
2
3
3
4
3
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
SW
16
1.8
SW
14
1.5
SW
14
1.3
SW
13
1.1
SW
13
0.9
SW
14
1.1
SW
14
1.4
SW
15
1.9
SW
18
1.7
SW
16
1.5
SW
16
1.3
SW
14
1.1
SW
14
0.9
SW
13
0.8
SW
13
0.7
SW
20
1.5
SW
19
1.9
SW
18
1.7
SW
16
1.5
SW
16
1.3
SW
15
Wave Graph
Metric surfscale
Energy kJ
2009
1273
813
552
363
350
466
795
2216
1504
1101
676
440
290
196
373
1614
2192
1456
1068
788
Wind (km/h)
25
SSW
20
SSW
5
ENE
15
NNE
10
NW
20
NE
30
N
15
N
15
NE
20
NNE
10
NE
15
E
15
ENE
20
SSE
20
E
20
E
15
SSE
20
E
20
NNE
10
NW
20
NNE
Wind State
cross
cross-on
glassy
cross-off
cross-on
cross-off
cross
cross
cross-off
cross-off
cross-off
off
off
cross-off
off
off
cross-off
off
cross-off
cross-on
cross-off
High Tide
10:24AM0.00m
12:18PM0.00m
1:57PM0.00m
3:31PM0.00m
5:12PM0.00m
Low Tide
7:08PM-0.00m
9:19PM-0.00m
1:09AM-0.00m
2:44AM-0.00m
4:20AM-0.00m
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:00
6:58
6:58
6:56
6:54
6:54
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:10
6:12
6:12
6:13
6:14
6:14
 mm
Temp °C
13
13
13
13
16
17
18
21
21
19
21
20
19
20
19
19
19
18
19
22
22
Feels °C
7
9
11
9
15
13
12
17
17
14
18
15
15
15
13
17
15
13
15
21
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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