Little Austi and Main Beach Surf Break

Lat Long: 34.30° S 150.94° E

Little Austi and Main Beach Surf Forecast and Surf Report

Issued: 3 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Little Austi and Main Beach sea temperature is
18.0° C
0.6° 

Little Austi and Main Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Little Austi and Main Beach surf forecast from 20 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 10PM (local time) - 4.5ft (1.4m), 6s period, NE swell with cross-offshore winds.
  • Most powerful swell: Thursday 20 Aug, 10PM (local time) - 4.5ft (1.4m), 6s period, NE swell with 152 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 1PM (local time) - 3.5ft (1.0m), 6s period with NE swell.

Best Forecast Surf Conditions for Little Austi and Main Beach this week:

The surf forecast for Little Austi and Main Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 1PM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.8m and 6s. Another secondary swell of 0.5m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Little Austi and Main Beach in the next 16 days are 1.4m 6s and forecast to arrive on Thursday (Aug 20) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Monday (Aug 24) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Thu 20th Aug)3.5ft (1.0m) 6s
Best Surf10PM (Thu 20th Aug)4.5ft (1.4m) 6s
Most Powerful10PM (Thu 20th Aug)4.5ft (1.4m) 6s

Table - best surf conditions forecast for Little Austi and Main Beach over the next 16 days.


The Lowdown

Alright, Rusty here, let’s break down what’s cooking for the next couple of weeks.

Right off the bat, the water’s sitting at a pretty standard 64°, right on the money for this time of year, so no surprises there. The problem is, for the next week and a half, we’re looking at a real flat spell. From Thursday the 20th of August right through to Sunday the 30th of August, the surf is tiny and pretty gutless. The swell energy is weak, mostly under 100 (91) and often dipping into the single digits. The wind is mostly cross-off or glassy, but with waves barely scraping 3 ft and a short, weak period of 6 seconds, there’s just no push. A few mornings like Monday the 24th of August have glassy conditions, but the waves are too small to get excited about. It’s a long, quiet run.

But then, hold onto your board. The end of the month and start of September looks like a total game-changer.

The standout session is Monday the 31st of August. Little Austi and Main Beach (a beach and reef set-up) is going to fire. The morning brings a solid 8 ft swell from the ENE, with a moderate wave energy of 861, and a light offshore breeze from the NNW. That’s clean, lined-up surf, and the guidance says it’s the best on offer. The afternoon gets bigger, up to 12 ft, but the wind swings cross-off and the energy jumps to 2,814, which is serious power. That afternoon is for experts only.

Tuesday the 1st of September keeps the party going. Another 12 ft swell from the ENE, with a period of 10 seconds and energy over 2,300. The morning wind is cross-off from the west, keeping it clean. This is premium, heavy groundswell for experienced surfers.

After that, the swell slowly drops through the rest of the first week of September, with the wind turning more cross-on, making it choppier. Thursday the 3rd of September sees waves around 5 ft, but the wind is messy. By Friday the 4th of September, the afternoon glass off brings a 5 ft SSE swell and good shape, a nice little finisher to the run.

So, bottom line: the first week and a half is a write-off. The real action is from Sunday the 30th of August into Tuesday the 1st of September. That Monday morning, the 31st, with the 8 ft ENE swell and offshore breeze, is your window. It’s a long-range call, so keep an eye on it, but it’s looking like a beauty.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Thu morning, min 11°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 38mm), heaviest during Tue morning. Warm (max 23°C on Mon afternoon, min 11°C on Tue night). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
NE
6
0.9
ENE
6
1.2
ENE
6
0.9
ENE
6
0.7
NE
6
0.5
NE
6
0.4
NE
6
0.6
SSE
5
0.3
NE
6
0.4
NE
6
0.6
ENE
9
0.8
NE
5
0.8
ENE
5
0.9
ENE
6
0.7
ENE
6
0.7
NE
9
0.8
ENE
9
0.8
ENE
9
0.9
NE
8
1.1
SSE
6
0.9
SSE
6
Wave Graph
Metric surfscale
Energy kJ
46
57
109
74
40
18
9
21
5
9
52
33
37
59
30
84
106
99
94
101
47
Wind (km/h)
10
NNW
10
NNE
10
WNW
10
WNW
10
NNW
10
WSW
15
W
10
SE
10
WSW
5
NE
20
NE
10
NNW
10
NW
0
NW
5
WNW
5
SSW
10
SSE
20
SSW
30
SSW
20
SSW
15
SW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
on
cross-off
glassy
cross
off
off
glassy
off
glassy
cross-on
cross
cross
cross
cross
High Tide
1:51PM1.26m
2:26AM0.86m
2:55PM1.25m
3:47AM0.84m
4:00PM1.27m
4:57AM0.87m
4:57PM1.32m
5:49AM0.92m
5:45PM1.38m
6:31AM0.99m
6:26PM1.45m
7:08AM1.06m
7:04PM1.50m
Low Tide
8:49PM0.50m
7:53AM0.53m
10:06PM0.48m
9:01AM0.55m
11:09PM0.43m
10:09AM0.54m
11:58PM0.37m
11:07AM0.49m
00:37AM0.30m
11:56AM0.43m
1:12AM0.23m
12:39PM0.37m
1:44AM0.17m
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
heavy rain
heavy rain
mod rain
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:30
6:28
6:26
6:26
6:24
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:28
5:29
5:30
5:30
5:30
5:31
5:32
 mm
1
14
14
9
Temp °C
21
19
16
21
20
16
19
17
13
17
16
13
22
23
16
12
13
13
13
13
11
Feels °C
18
17
14
20
18
14
16
15
12
14
12
11
19
22
14
12
12
10
7
9
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 Little Austi and Main Beach Surf forecast

The above surf forecast table for Little Austi and Main Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Little Austi and Main Beach can be found by selecting the local surf guide option on the grey menu. Our Little Austi and Main Beach 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 (Little Austi and Main Beach) 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 Little Austi and Main Beach 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 Illawarra? If you are looking for accommodation near Little Austi and Main Beach, camping, hotels and holiday cottages in Illawarra, consider staying in Wollongong which is 15 km (9 miles) away. Other places in and around Illawarra where you can find information about places to rent, and car hire include Port Kembla which is 22 km (14 miles) away, Engadine, Caringbah and Cronulla.

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