The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.3° 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 8 Aug 2026:

  • Best quality surf: Friday 14 Aug, 12AM (local time) - 7ft (2.1m), 16s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 9 Aug, 9PM (local time) - 10ft (3.0m), 19s period, SW swell with 5,481 kJ wave energy.
  • Next surfable swell (1★+): Friday 14 Aug, 12AM (local time) - 7ft (2.1m), 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 12AM. The primary swell is predicted to be 2.1m and 16s period with a secondary swell of 0.2m and 17s. 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 3.0m 19s and forecast to arrive on Sunday (Aug 09) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 14th Aug)7ft (2.1m) 16s
Best Surf12AM (Fri 14th Aug)7ft (2.1m) 16s
Most Powerful 9PM (Sun 9th Aug)10ft (3.0m) 19s

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


The Lowdown

G'day, I'm Rusty. Let's have a look at what's on the cards for The Island over the next couple of weeks.

First up, the water temp is about average for this time of year, so no surprises there.

Honestly, the first few days are a write-off. From Sunday the 9th all the way through to Thursday the 13th, it's a complete mess. We're talking strong winds, cross-onshore, and the swell is all over the place. The wave energy is massive, with readings up around 2997 to 4289, but it's all blown out and lumpy. Not worth paddling out for anyone. The swell is hanging around 8ft to 10ft, mostly from the WSW, but with that wind, it's just a washing machine. Even the advanced surfers would be struggling.

Then, things start to turn around. Friday the 14th is where it gets interesting. The wind drops right off, swinging light cross-offshore from the ENE, and the swell settles to a clean 7ft from the SW with a long 16 to 17 second period. That's proper groundswell. The wave energy is strong at 2257 to 2549, but it's clean. This is for experienced surfers only, though – that size and period on a reef break like The Island will be powerful and a bit tricky. The offshore wind is a major positive, so you'll get some beautiful, lined-up waves. Get ready for a bit of a crew, too, as it can get crowded sometimes.

Saturday the 15th is another beauty. The wind is light offshore from the E, and the swell drops a touch to 6ft to 6ft from the SW, still with a long 16 second period. The wave energy is still strong at 1499 to 1784. It's clean, and the conditions are excellent for experienced surfers. This is the standout window of the forecast.

Sunday the 16th and Monday the 17th are still good, with the swell dropping to 4ft to 4ft, but the wind stays offshore, making for clean, fun waves. The wave energy is moderate at 650 to 766. A bit smaller, but still plenty of fun for the advanced crew.

After that, it fades out. From Tuesday the 18th onwards, the swell drops below 5ft, and the wind turns messy again, with a lot of cross-shore and onshore conditions. The wave energy drops to under 900, and then under 500 by the 21st. There's a bit of a clean window on Thursday the 20th with some small 4ft swell, but it's marginal. The rest of the second week is mostly poor, with a final little blip of 5ft swell on the 23rd, but with onshore wind.

So, to sum it up: the first half of the week is a total loss. The best surf is definitely Friday the 14th and Saturday the 15th. Get out there for those clean, offshore conditions and that long-period SW groundswell. It’s the real deal for the experienced surfer.

Rusty.

Short Range Forecast

Heavy rain (total 24mm), heaviest during Tue afternoon. Very mild (max 15°C on Sat night, min 11°C on Sun morning). Winds decreasing (near gales from the WSW on Sun morning, moderate winds from the WNW by Mon afternoon).

Days 5-7 Weather Summary

Some drizzle, heaviest during Tue night. Very mild (max 15°C on Wed afternoon, min 12°C on Tue night). Winds decreasing (strong winds from the SW on Tue night, calm by Thu night).

Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
1
0
0
0
0
0
0
2
2
4
4
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
14
2.5
WSW
16
3
WSW
11
3
SW
18
2.5
SW
17
2.5
SW
16
1.9
SW
16
1.5
SW
14
3
WSW
9
3
SW
16
2.5
SW
17
2.5
SW
17
2.4
SW
16
2.2
SW
15
2.3
SW
15
2.1
SW
16
2.1
SW
16
2.1
SW
17
2.1
SW
16
Wave Graph
Metric surfscale
Energy kJ
821
2997
2090
4927
4088
3136
1776
915
1356
4056
4284
3768
2839
2122
2259
2120
2231
2520
2087
Wind (km/h)
30
N
50
SW
55
W
50
SW
30
WSW
25
W
35
NNW
45
NNW
50
SW
45
SW
35
WSW
30
SW
20
SW
15
SW
10
SW
5
SW
5
ENE
5
SE
10
E
Wind State
cross
cross-on
on
cross-on
cross-on
on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-off
cross-off
off
High Tide
3:11AM0.00m
4:48AM0.00m
6:33AM0.00m
8:31AM0.00m
10:29AM0.00m
12:16PM0.00m
Low Tide
4:00PM-0.00m
5:39PM-0.00m
7:32PM-0.00m
9:31PM-0.00m
11:25PM-0.00m
1:05AM-0.00m
rain showers
mod rain
cloud
rain showers
cloud
cloud
cloud
cloud
mod rain
rain showers
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:16
7:15
7:13
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:00
6:00
6:01
6:01
6:02
 mm
7
8
2
7
1
Temp °C
15
13
13
15
13
14
14
14
12
14
14
15
14
14
15
15
15
15
15
Feels °C
9
1
1
6
6
9
8
3
1
6
6
9
9
11
12
12
12
13
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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