The Island Surf Break

Lat Long: 33.05° S 134.17° E

The Island Surf Forecast and Surf Report

Issued: 8 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's The Island sea temperature is
15.9° 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 18 Jul 2026:

  • Best quality surf: Thursday 23 Jul, 9PM (local time) - 6.5ft (2.0m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 23 Jul, 3PM (local time) - 6.5ft (2.0m), 16s period, SW swell with 1,943 kJ wave energy.
  • Next surfable swell (1★+): Monday 20 Jul, 6PM (local time) - 4.5ft (1.4m), 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 Monday (Jul 20) at 6PM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.1m and 15s. 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 2.0m 16s and forecast to arrive on Thursday (Jul 23) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Jul 25) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Mon 20th Jul)4.5ft (1.4m) 14s
Best Surf 9PM (Thu 23rd Jul)6.5ft (2.0m) 16s
Most Powerful 3PM (Thu 23rd Jul)6.5ft (2.0m) 16s

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


The Lowdown

Alright, let’s get into it. The surf’s been pretty sad lately, but don’t write off the whole stretch just yet. The Island’s a reef that needs a solid SW groundswell and clean conditions to really fire, and for a while we’re looking at exactly the wrong winds. A lot of cross and cross-on stuff messing up the face. The water’s sitting at 61°F which is about normal for this time of year, so grab a spring suit and you’re fine.

The first few days from Saturday 18th right through to Wednesday 22nd are pretty much a write-off. Swell’s small, energy’s weak (258 to 619), and the wind is either cross or cross-on most of the time. It’s choppy, lumpy, and not worth paddling out for. There’s a gap of about five days with no real standouts.

Thursday 23rd morning shows a bit of life – swell jumps to 6ft from the SW, period a solid 14 seconds, and the wind goes cross-off. That’s a clean look, and the energy’s up to 1445 – moderate to strong. But it’s still only marginal due to tide or something. Still, conditions are clean. The Island is an advanced spot, so if you’re experienced, it’s worth a look.

Friday 24th is the best of the first week. Morning session: 5ft SW swell, 14-second period, clean cross-off breeze from the NE, and energy at 1002. That’s proper groundswell with good shape. Then Friday afternoon goes glassy – SW wind a mere 3 mph, 4ft, and the energy’s at 720. Expect very good surf. This is the standout. Crowds are possible at The Island, but worth it for those clean lines.

Saturday 25th morning still has clean conditions but the swell drops to 4ft, energy falls to 513, and the wind picks up. It’s okay but not as good. Then from Saturday afternoon through to Wednesday 30th, it’s back to poor conditions – either blown out, lumpy, or too much wind. There’s a big jump on Tuesday 28th with 8ft swell but it’s cross-on and fresh breeze, so it’s messy. Not for paddling.

The second week picks up on Friday 31st July. Morning: 2ft but the period is 20 seconds – very long groundswell. That’s a reef-friendly wave, and the wind is offshore from the E at 16 mph. Energy’s at 428 – moderate. Expect good to very good surf. Then Saturday 1st August is the long-range standout. Morning: 4ft SW, 17-second period, cross-off light breeze, energy 1091. Excellent conditions for experienced surfers. That’s a real gem, but it’s a week and a half away, so keep an eye on it.

Sunday 2nd August pumps up to 10ft but that’s too big for most, and with cross winds it’s gonna be a beast. Only for experts with big balls.

So to sum it up: Friday 24th July is your best bet in the first week – clean, glassy, good groundswell. Saturday 1st August is the one to circle on the calendar, but it’s a long way off. The Island (reef) handles the SW groundswell best, and when the wind’s offshore or glassy, it’s a gem.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Sat night, min 13°C on Sun morning). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Wed morning. Very mild (max 16°C on Tue night, min 10°C on Fri morning). Winds decreasing (fresh winds from the SSW on Wed morning, calm by Fri morning).

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
2
1
1
3
1
0
0
0
1
1
3
3
4
4
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SW
13
0.4
SW
19
1
SW
18
1.2
SW
16
1.2
SW
15
1.4
SW
15
1.4
SW
14
1.3
SW
13
1.2
SW
13
1.1
SW
12
1.4
SW
14
1.5
SW
13
1.8
SW
14
1.9
SW
14
2
SW
16
1.8
SW
15
1.6
SW
14
1.4
SW
14
1.3
SW
14
Wave Graph
Metric surfscale
Energy kJ
170
133
607
748
640
773
733
543
464
319
722
688
1203
1363
1943
1511
984
780
647
Wind (km/h)
20
NNE
25
N
20
NNW
20
NNE
20
N
15
NW
15
NNE
15
N
15
NW
15
WSW
25
SSW
25
SSW
25
S
20
SSE
20
SSE
10
SE
10
NE
10
SW
10
E
Wind State
cross-off
cross
cross
cross-off
cross
cross-on
cross-off
cross
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-on
off
High Tide
4:16PM0.00m
5:55PM0.00m
7:51PM0.00m
10:07PM0.00m
2:17AM0.00m
Low Tide
3:28AM-0.00m
5:04AM-0.00m
6:50AM-0.00m
8:56AM-0.00m
11:16AM-0.00m
1:23PM-0.00m
clear
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
part cloud
clear
rain showers
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:31
7:31
7:31
7:30
7:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:46
5:46
5:47
5:47
5:49
 mm
1
Temp °C
18
14
18
18
15
17
17
15
15
16
14
14
14
13
12
13
10
11
11
Feels °C
13
8
14
13
10
15
14
11
11
13
9
9
8
8
6
8
6
8
7
  • 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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