The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.2° 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 9 Aug 2026:

  • Best quality surf: Friday 14 Aug, 6AM (local time) - 7.5ft (2.3m), 18s period, SW swell with glassy winds.
  • Most powerful swell: Monday 10 Aug, 12PM (local time) - 11ft (3.5m), 16s period, SW swell with 5,963 kJ wave energy.
  • Next surfable swell (1★+): Friday 14 Aug, 6AM (local time) - 7.5ft (2.3m), 18s 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 6AM. The primary swell is predicted to be 2.3m and 18s period with a secondary swell of 0.2m and 19s. 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 3.5m 16s and forecast to arrive on Monday (Aug 10) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Monday (Aug 17) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 14th Aug)7.5ft (2.3m) 18s
Best Surf 6AM (Fri 14th Aug)7.5ft (2.3m) 18s
Most Powerful12PM (Mon 10th Aug)11ft (3.5m) 16s

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


The Lowdown

G’day, it’s Rusty here.

Look, the next couple of weeks are a bit of a mixed bag. We’ve got a solid run of groundswell coming through, but the wind is going to be the story for a lot of it. We’re looking at a stretch where you’ll need to pick your moment, because there’s plenty of juice in the water, but it’s not always going to be clean.

The Island (your spot) is a consistent, exposed reef break, and it’s going to be on the receiving end of a strong, long-period SW groundswell for the first few days. The energy is proper, with combined swell energy values in the thousands—around 3859 on Monday morning—so there’s serious power in the water. But it’s all for nothing if the wind’s howling. Monday and Tuesday are looking pretty average, with fresh to strong cross-onshore breezes making things lumpy and messy. The wave heights are around 8ft, which is pushing it for most, and with that short-period chop on top, it’s not going to be a fun paddle. This is more of a "watch it from the sand" situation.

The mid-week clears up a bit. Wednesday is still a bit bumpy, but Thursday morning sees the wind drop right out. It’s glassy, and the swell is still a solid 8ft with a 17-second period. That’s a serious groundswell, and with the glassy conditions, The Island is going to be offering up some proper, bowling reef waves. The combined energy is still very strong at 3232. This is the standout window for the first week. It’s big, it’s powerful, and it’s clean—definitely for experienced surfers only. The water temp is about average for the time of year, so nothing wild there.

The weekend sees the swell ease a touch, but the wind swings offshore and cross-offshore, which is a huge plus. Saturday morning looks clean with 6ft of SW swell, and there’s a chance of a good one. The energy is still moderate, around 1784. Sunday drops a bit more, down to 5ft, but it’s still clean. These are much more manageable waves, still with some punch.

Then we hit a bit of a lull. Monday and Tuesday of the following week see the swell drop right out, down to around 3-4ft. The wind is light and offshore, so it’ll be small but clean. If you’re a longboarder or just want a fun, easy session, Tuesday morning with that 19-second period and light offshore breeze might be your best bet. It’s tiny, but it could be fun.

The end of the run, from around the 20th, gets a bit tricky. The swell builds back up to 8ft, but the wind turns cross-shore and gets fresh, making it lumpy and hard work. The last few days of the window are pretty much a write-off, with strong winds and rain. The Island is going to be blown out and messy. This setup looks more interesting for the kite-surfing crew than for paddle surfing.

The real highlight is Thursday morning, the 14th. That’s the day to be out there—solid, powerful SW groundswell, glassy conditions, and a consistent reef. Mark it down. The following Saturday morning is a good backup, but Thursday is the one.

Rusty.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Tue afternoon. Very mild (max 15°C on Tue morning, min 12°C on Tue afternoon). Winds decreasing (gales from the SW on Sun night, light winds from the WNW by Mon afternoon).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Wed night, min 13°C on Fri night). Wind will be generally light.

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
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
0
0
0
2
2
2
3
5
2
3
4
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
12
2.5
SW
17
2.4
SW
16
1.8
SW
16
1.5
SW
14
2
W
15
3
SW
17
2.5
SW
17
2.5
SW
17
2.3
SW
16
2.3
SW
16
2.2
SW
16
2.1
SW
15
2.3
SW
17
2.3
SW
17
2
SW
16
1.9
SW
16
1.8
SW
16
1.7
SW
15
Wave Graph
Metric surfscale
Energy kJ
2589
3859
2948
1474
915
1902
4335
3950
3512
2702
2634
2266
1833
3198
2800
1943
1764
1613
1204
Wind (km/h)
55
SW
30
WSW
20
W
30
NNW
40
NNW
40
WNW
45
SW
30
WSW
25
SW
15
SW
10
SW
15
SW
10
SSW
0
NE
15
SW
15
SSE
15
SE
20
SSE
15
ESE
Wind State
cross-on
cross-on
on
cross-on
cross
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
glassy
cross-on
cross-off
cross-off
cross-off
off
High Tide
4:48AM0.00m
6:33AM0.00m
8:31AM0.00m
10:29AM0.00m
12:16PM0.00m
1:53PM0.00m
Low Tide
5:39PM-0.00m
7:32PM-0.00m
9:31PM-0.00m
11:25PM-0.00m
1:05AM-0.00m
2:40AM-0.00m
rain showers
cloud
part cloud
cloud
cloud
mod rain
rain showers
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:16
7:15
7:13
7:13
7:11
<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
6:04
 mm
10
10
2
1
Temp °C
14
13
14
14
15
14
13
14
14
15
15
15
15
15
15
15
13
14
14
Feels °C
3
7
10
9
6
6
4
7
9
13
12
12
12
13
12
11
10
9
9
  • 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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