The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.0° C
0.5° 

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 13 Aug 2026:

  • Best quality surf: Friday 14 Aug, 3AM (local time) - 7.5ft (2.3m), 16s period, SW swell with glassy winds.
  • Most powerful swell: Friday 14 Aug, 6AM (local time) - 7.5ft (2.3m), 17s period, SW swell with 2,766 kJ wave energy.
  • Next surfable swell (1★+): Friday 14 Aug, 3AM (local time) - 7.5ft (2.3m), 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 Friday (Aug 14) at 3AM. The primary swell is predicted to be 2.3m and 16s period with a secondary swell of 0.2m and 18s. 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 2.3m 17s and forecast to arrive on Friday (Aug 14) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Aug 18) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Fri 14th Aug)7.5ft (2.3m) 16s
Best Surf 3AM (Fri 14th Aug)7.5ft (2.3m) 16s
Most Powerful 6AM (Fri 14th Aug)7.5ft (2.3m) 17s

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


The Lowdown

Alright, let’s break down what’s on the cards for The Island. It’s a reef break, exposed to the southwest, and it’s consistent. We’ve got a long stretch of decent groundswell coming, but the wind is going to mess it up more often than not. A lot of these days are for the experienced crew – once it’s over 5ft, the groms should sit it out.

We kick off on Thursday the 13th of August with a 7ft SW groundswell, long 15 second period, but the breeze is onshore from the WSW at 6 mph, so it’s messy. The combined energy is strong at 2233. It’s a marginal call. Friday the 14th is where it starts to fire. The morning is the real standout. Still the same 7ft SW swell, but the period stretches to a very long 16 seconds and the wind goes glassy. Absolutely clean. The combined energy jumps to 2564 – that’s a powerful, solid groundswell. For experienced surfers, this is as good as it gets. The afternoon stays clean with a cross-off breeze, but the morning is the one.

Saturday the 15th keeps the good times rolling with a 6ft SW swell at 16 seconds, now with a solid offshore breeze from the east at 12 mph in the morning, dropping to 9 mph in the afternoon. Clean, powerful conditions. Combined energy is still strong at 1784. Another top pick.

Sunday the 16th and Monday the 17th see the swell ease back a notch, around 3ft to 4ft, but it’s still a long period SW groundswell with clean offshore winds. Combined energy drops to moderate (829 and 809), but for a smaller board, the shape will be there. Perfect for a relaxed session.

Then we hit a rough patch. Tuesday the 18th and Wednesday the 19th get blown out – strong cross-shore and onshore winds, messy conditions, and the energy gets weak. Not worth paddling out.

Thursday the 20th of August brings a pulse of new SW groundswell, 5ft at 16 seconds, combined energy up to 1339. Morning has a light cross-off breeze, so it’s clean and juicy. That’s another good option for the experienced surfer.

Friday the 21st is a write-off in the afternoon with a building 7ft WSW swell but strong onshore wind. Saturday the 22nd gets chunky – 10ft SW swell in the morning, 8ft in the afternoon, period around 13-14 seconds. The combined energy is huge (2845 and 2944). The wind is cross-off, so it’s clean, but at that size, it’s only for the experts. A real beast.

Sunday the 23rd of August is a sneaky highlight. Drop back to 7ft SW at 15 seconds, combined energy 2116, light offshore breeze in the morning. Clean and powerful. That’s a proper session.

From Monday the 24th onwards, the wind turns against us again – cross-on and onshore, choppy. There’s still plenty of swell, even a big 8ft SW on the 25th with energy up at 3088, but it’s messy. A few scattered windows show up, like Friday the 28th of August: a very long period 7ft SW groundswell at 19 seconds, combined energy 3106, and only a cross-shore breeze. That’s a clean line-up but with that period, it’s going to jack up fast – definitely for the experienced guys.

Overall, the best bets are Friday the 14th morning, Saturday the 15th, and Sunday the 23rd morning. The big days on the 22nd and 28th are for the brave. Crowds are possible here, so get in early.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sat afternoon, min 14°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Tue afternoon. Very mild (max 18°C on Tue morning, min 12°C on Sun night). Winds increasing (light winds from the SSE on Mon afternoon, fresh winds from the N by Tue morning).

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
4
4
4
4
4
4
3
3
3
3
3
2
1
0
0
1
1
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
SW
16
2.2
SW
16
2.1
SW
16
2.1
SW
16
2
SW
16
1.8
SW
16
1.6
SW
15
1.5
SW
14
1.3
SW
14
1.2
SW
14
1.3
SW
16
1.3
SW
16
1.1
SW
15
1.2
SW
18
0.9
SW
17
0.9
SW
16
1.2
SW
15
1
SW
15
1.4
SW
15
Wave Graph
Metric surfscale
Energy kJ
2295
2537
2344
2259
1895
1474
1011
911
736
557
813
783
472
871
476
437
675
424
773
Wind (km/h)
5
W
0
SE
15
SSE
15
ESE
20
ESE
15
E
15
E
15
ENE
10
ESE
20
E
15
ENE
5
SSE
15
NE
35
NNE
35
N
25
W
15
W
15
SW
15
SSE
Wind State
on
glassy
cross-off
cross-off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross
on
on
cross-on
cross-off
High Tide
12:16PM0.00m
1:53PM0.00m
3:27PM0.00m
5:12PM0.00m
9:38PM0.00m
Low Tide
11:25PM-0.00m
1:05AM-0.00m
2:40AM-0.00m
4:17AM-0.00m
6:13AM-0.00m
8:29AM-0.00m
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
part cloud
light rain
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:11
7:11
7:09
7:07
7:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:02
6:04
6:04
6:05
6:06
6:06
 mm
1
Temp °C
15
14
14
15
15
16
16
14
15
14
15
16
16
18
17
16
14
14
14
Feels °C
13
13
11
11
9
12
12
10
11
8
12
14
11
9
11
11
11
11
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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