The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.1°C
0.4° 

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★+): Wednesday 26 Aug, 6PM (local time) - 3ft (0.9m), 12s 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 Wednesday (Aug 26) at 6PM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.3m and 16s. 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 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 (Wed 26th Aug)3ft (0.9m) 12s
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 have a look at what’s on offer for The Island. We’ve got a solid 16-day window, but it’s a bit of a slow burner with a few absolute gems hidden in there.

Overall Pattern

The pattern starts modest, builds into a strong pulse of groundswell around the end of August, then has a messy, windy middle before a late run of cleaner, punchy surf in the first full week of September. The standout window is undoubtedly Friday afternoon the 28th of August through to Monday morning the 31st, and then again on the morning of the 8th of September. The rest of the time we’re fighting wind or dealing with lumpy conditions.

The Run Down

We kick off Wednesday the 26th morning with some clean 4ft SW groundswell (combined energy of 556), but it’s marginal. Not really worth paddling out for. The next morning, Thursday the 27th, we get a jump in energy with a 5ft SW swell, period 15 seconds, and combined energy hitting 1432. The wind is cross-shore though, so it’s lumpy. Not our day.

The First Standout

Friday the 28th is where it starts to get interesting. The morning is clean with a 6ft SW groundswell (energy 1617), but it’s the Friday afternoon session that’s the real gem. The wind goes glassy, dead calm, and we’ve got a beautiful 5ft SW groundswell with a 16-second period and combined energy of 1199. The water temperature is 59°, which is just about average for this time of year, so no worrying about a cold snap. The Island is a consistent reef break, and with that glassy surface it’s going to be clean, lined-up, and all-time for experienced surfers. This is your best call of the first week.

The Middle Ground

Saturday the 29th looks clean again with a gentle offshore wind and 4ft SW swell, but it’s smaller. Sunday the 30th morning sees the swell drop to 2ft but with a very long 19-second period and a clean offshore wind – that’s a fun, smaller window for the longboard or a proper reef-crawler. Monday the 31st morning brings a bigger 5ft SW swell (energy 1663) and cross-offshore wind, but it’s still a bit marginal. Then we hit a wall.

From Tuesday the 1st of September right through to Saturday the 5th of September, the wind is our enemy. Fresh cross-shore, cross-on, and onshore winds ruin the surface. The swell is there, hitting 6ft on the 5th, but it’s choppy and messy. This stretch is a write-off for a clean session. Kite surfers might love the wind and the 6ft swell, but for paddle surfing, it’s a hard pass.

The Second Standout

Sunday the 6th of September morning is a redemption story. The wind swings to a light cross-offshore breeze, and we’ve got a clean 5ft SW groundswell (energy 1067). This is excellent for experienced surfers. Monday the 7th stays clean with a bump in size to 6ft SW (energy 1345), but it’s still a bit marginal.

The Best of the Run

Then, Tuesday the 8th of September morning. This is it. The standout of the entire outlook. We’re looking at a 6ft SW groundswell with a long 18-second period, a moderate offshore wind, and a combined energy reading of 2260. That’s strong wave energy. The Island is a reef, so this long-period groundswell will wrap in perfectly, offering proper, powerful, hollow waves. It’s a bit overhead for the average punter, but for the experienced crew, this is the session to circle. The wind is clean and offshore, so it’s going to be a proper morning.

After that, Wednesday the 9th and Thursday the 10th of September see the wind turn nasty again, with fresh cross-shore winds and the swell getting too big at 8ft, making it a messy, expert-only affair at best, and largely unsurfable.

So, to keep it simple: Friday afternoon the 28th of August is your first standout call – glassy, clean, fun groundswell. Tuesday morning the 8th of September is the big one – bigger, punchier, and still clean. The rest of the window is either too small, too windy, or too messy. Get out there for those two windows.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Thu afternoon, min 10°C on Wed morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Mon afternoon, min 16°C on Sat night). Mainly fresh winds.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
1
0
3
3
3
4
3
2
2
2
3
3
4
3
3
3
0
1
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
13
1.1
SW
13
0.9
SW
14
1.1
SW
14
1.4
SW
15
1.9
SW
18
1.8
SW
16
1.6
SW
16
1.3
SW
14
1.1
SW
14
0.9
SW
13
0.8
SW
13
0.6
SW
19
1.2
SW
19
1.4
SW
17
1.6
SW
18
1.6
SW
17
1.5
SW
16
1.2
SW
16
1
SW
14
1.4
SW
16
Wave Graph
Metric surfscale
Energy kJ
552
363
350
466
805
2216
1611
1194
676
440
290
196
303
994
1147
1628
1573
1096
710
412
917
Wind (km/h)
15
NNE
10
NW
20
NE
30
N
15
N
20
ENE
15
NNE
5
N
20
ESE
15
E
15
SE
20
E
15
E
15
S
15
ENE
20
NNE
15
NNW
25
NNE
35
N
25
NNW
10
N
Wind State
cross-off
cross-on
cross-off
cross
cross
cross-off
cross-off
glassy
off
off
cross-off
off
off
cross
off
cross-off
cross
cross-off
cross
cross
cross
High Tide
10:24AM0.00m
12:18PM0.00m
1:57PM0.00m
3:31PM0.00m
5:12PM0.00m
7:05PM0.00m
Low Tide
9:19PM-0.00m
1:09AM-0.00m
2:44AM-0.00m
4:20AM-0.00m
6:07AM-0.00m
clear
clear
clear
clear
part cloud
cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:58
6:56
6:54
6:54
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:10
6:12
6:12
6:13
6:14
6:14
6:15
 mm
Temp °C
13
15
16
18
22
21
20
21
20
19
21
19
19
19
19
19
22
22
21
25
23
Feels °C
9
13
12
12
20
16
16
19
16
16
17
14
17
16
15
14
19
16
13
19
20
  • 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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