The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 2 am 23 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 22 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 9PM (local time) - 7ft (2.1m), 18s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 6PM (local time) - 7ft (2.1m), 18s period, SW swell with 2,670 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 12AM (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 Wednesday (Aug 26) at 12AM. 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 glassy as the swell arrives.

The most powerful waves expected at The Island in the next 16 days are 2.1m 18s and forecast to arrive on Thursday (Aug 27) at 6PM. Winds are predicted to be cross-shore 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+)12AM (Wed 26th Aug)5ft (1.5m) 14s
Best Surf 9PM (Thu 27th Aug)7ft (2.1m) 18s
Most Powerful 6PM (Thu 27th Aug)7ft (2.1m) 18s

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


The Lowdown

Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.

Alright, we’re looking at a solid run of swell for The Island, a consistent reef break that's exposed to the SW. The water temperature is sitting at 59°, which is pretty much spot on for this time of year, so nothing to worry about with the wetsuit.

The real standout is Sunday the 23rd. We’ve got a nice SW groundswell, 6 ft, with a very long period of 17 seconds. That’s a lot of energy in the water (combined energy of 1673), and with a light NNE cross-off breeze, it’s going to be clean. This is a reef break, so that long period should set up beautifully. It’s advanced territory and can get crowded, but this is the session to aim for.

Monday the 24th is a bit of a letdown. The swell drops to 3 ft with a shorter period, and morning rain with a cross-off wind won't help. The afternoon turns ugly with a fresh 19 mph SSW cross-breeze making a mess of things. Skip it.

We get a pulse back on Tuesday the 25th with 7 ft SW swell, but it’s blown out by a strong cross-wind. The energy is there (1880), but the quality is poor. Only for the die-hards.

Wednesday the 26th morning is a sneaky good one. The swell is down to 4 ft, but it’s clean with a light NNE cross-off. Good for a fun session, but not a standout.

Thursday the 27th is a weird one. The morning is small at 3 ft, but the period is a massive 21 seconds. That’s a lot of energy (1160) but the cross-wind will chop it up. The afternoon brings a bigger 6 ft, 19-second swell, but it’s a cross-on wind. It’ll be lumpy, but there’s a lot of power (2639).

Friday the 28th morning is the next true gem. We’ve got a clean 6 ft SW swell with a 16-second period, cross-off wind from the SE, and it’s glassy. The combined energy is 1597, and it’s listed as excellent for experienced surfers. This is right up there with Sunday.

The weekend of the 29th and 30th is mellow. Clean mornings, but the swell is smaller, around 3 ft to 4 ft. Sunday the 30th afternoon has a massive 6 ft, 19-second swell with a combined energy of 4512, but it’s a slight cross-on wind. It’ll be big, but not perfect.

The first week of September is a mixed bag. We get a solid 7 ft SW swell on the 3rd and 4th. The 4th has a clean, cross-off morning, so that’s your best bet in that stretch. The combined energy is 2190, so it’ll be powerful. The 5th has a clean morning too, but it’s a bit smaller at 5 ft.

Honestly, the two standout sessions are Sunday the 23rd and Friday the 28th. Both have clean winds, good size, and that long-period SW groundswell that loves this reef. The rest of the period is either smaller, wind-affected, or both. The conditions get a bit more uncertain in the second week, but the 4th of September looks promising.

Stay stoked,
Rusty

Short Range Forecast

Moderate rain (total 14mm), heaviest on Sun night. Very mild (max 19°C on Sun afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the SSW on Mon night, calm by Tue night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Thu afternoon, min 10°C on Wed morning). Wind will be generally light.

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
2
1
0
0
1
1
3
3
0
1
2
2
4
4
3
1
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
SW
17
1.6
SW
16
1.2
SW
15
1
SW
14
1.3
SW
14
1.9
SW
13
2
SW
16
1.8
SW
14
1.5
SW
14
1.3
SW
13
1.1
SW
13
0.9
SW
15
0.9
SW
21
1.9
SW
19
2.1
SW
17
1.8
SW
16
1.6
SW
16
1.3
SW
14
1.2
SW
14
1.1
SW
13
0.9
SW
12
Wave Graph
Metric surfscale
Energy kJ
1643
1194
614
393
605
1242
1880
1273
825
552
357
355
714
2639
2523
1591
1194
676
557
380
256
Wind (km/h)
25
NNE
15
N
30
E
15
NNE
30
SSW
30
SW
30
SSW
20
SSW
0
N
15
NNE
10
NW
15
NE
25
N
10
NW
10
ENE
15
SE
25
SSE
25
SE
15
SE
20
SE
15
ESE
Wind State
cross-off
cross
off
cross-off
cross
cross-on
cross
cross-on
glassy
cross-off
cross-on
cross-off
cross
cross-on
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
4:23AM0.00m
10:24AM0.00m
12:18PM0.00m
1:57PM0.00m
Low Tide
3:36PM-0.00m
5:13PM-0.00m
7:08PM-0.00m
9:19PM-0.00m
1:09AM-0.00m
2:44AM-0.00m
part cloud
cloud
light rain
light rain
light rain
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:01
7:00
6:58
6:58
6:56
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:08
6:09
6:09
6:10
6:12
6:12
6:13
 mm
5
5
4
Temp °C
17
19
15
15
14
14
14
13
13
13
15
17
18
20
20
16
15
13
12
12
12
Feels °C
12
15
11
14
9
7
8
9
11
10
13
13
14
17
18
13
11
9
8
7
8
  • 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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