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: 9 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Little Austi and Main Beach sea temperature is
18.5° C
1.1° 

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 Jul 2026:

  • Best quality surf: Monday 20 Jul, 7PM (local time) - 5.5ft (1.7m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 20 Jul, 4PM (local time) - 6ft (1.8m), 11s period, ENE swell with 743 kJ wave energy.
  • Next surfable swell (1★+): Monday 20 Jul, 7PM (local time) - 5.5ft (1.7m), 11s period with ENE 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 Monday (Jul 20) at 7PM. The primary swell is predicted to be 1.7m and 11s period. 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 1.8m 11s and forecast to arrive on Monday (Jul 20) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Friday (Jul 24) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Mon 20th Jul)5.5ft (1.7m) 11s
Best Surf 7PM (Mon 20th Jul)5.5ft (1.7m) 11s
Most Powerful 4PM (Mon 20th Jul)6ft (1.8m) 11s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s coming up for Little Austi and Main Beach.

First up, Monday morning the 20th of July is the pick of the whole 16-day window. We’ve got a solid 6ft swell rolling in from the ENE with an 11-second period, so there’s a nice bit of groundswell energy in the water. The combined energy is sitting at 767, which is solid moderate wave energy. The wind is light offshore from the NW, so the waves will be clean and lined up. This is a setup that’s going to handle the shape well. The water temp is running at 65°, which is a touch warmer than normal for this time of year. Crowds are possible here, so get in early. This is the standout of the whole forecast.

Into Monday afternoon, we drop off a bit. The swell holds at 6ft and the period stays at 11 seconds, but the wind swings to a cross-off from the NNE at 9 mph. The score drops, and conditions become more marginal. The energy stays high at 764, but the tide or wind is making it tricky.

Tuesday morning the 21st still offers some clean surf. Swell drops to 5ft from the ENE, period 10 seconds, and the wind is again light offshore from the NNW. The energy is now 410 – still moderate. It’s clean, but not as punchy as Monday. Tuesday afternoon the wind goes cross-shore from the NE at 9 mph, and the surf gets a bit bumpy with a slight cross-chop.

Wednesday the 22nd has a smaller 4ft swell from the ENE, period 10 seconds. Morning wind is a cross-off from the W at 6 mph, keeping it clean. Energy is 238. Still surfable, but it’s dropping. Wednesday afternoon goes cross-shore, and the quality fades.

From Thursday the 23rd right through to the end of the forecast on the 4th of August, it’s a long stretch of poor conditions. The swell drops to 3ft and then smaller, with only a brief uptick to 1ft on the 25th, but that’s coming from a very long-period 18-second SSE swell, which is a long period, but the height is tiny. The energy on that afternoon is 118, which is weak. The wind is glassy, but there’s just not enough swell to surf. The rest of the time, the swell is mostly 0.7ft or 0.3ft, with energy in the single digits or low double digits. Winds are often cross-off or cross-onshore, and the odd glassy moment can’t save the lack of waves.

Honestly, after Monday and Tuesday, it’s a flat spell that lasts for nearly two weeks. If you’re a beginner, the 6ft swell on Monday is getting up there, but it’s still manageable. For experts, the whole period is a bust after the first couple of days. This setup is more interesting for kite surfing than paddle surfing on most days, thanks to the wind and lack of swell.

The best bet is clear: Monday morning the 20th of July.

Rusty, signing off.

Short Range Forecast

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

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Sat morning, min 6°C on Thu night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
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)
3
2
3
2
1
2
2
1
1
0
0
0
0
0
0
0
1
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)
1.8
ENE
11
1.8
ENE
11
1.6
ENE
11
1.4
ENE
10
1.3
ENE
10
1.1
ENE
10
1.1
ENE
10
1.1
ENE
10
0.9
ENE
10
0.8
ENE
9
0.8
ENE
9
0.6
ENE
9
0.4
ENE
8
0.4
ENE
8
0.3
ENE
8
0.4
NE
8
0.4
SSE
18
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.1
NE
8
Wave Graph
Metric surfscale
Energy kJ
743
743
575
410
314
218
231
210
142
94
92
53
28
28
14
18
104
7
6
6
2
Wind (km/h)
10
NW
15
NNE
10
NW
10
NNW
15
NE
10
NW
5
W
10
SW
10
W
20
WSW
25
W
15
WSW
5
W
10
NW
20
W
15
WSW
5
W
20
WSW
15
SW
10
SSE
10
W
Wind State
off
cross-off
off
off
cross
off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
glassy
off
cross-off
cross-off
glassy
cross-off
cross-off
on
cross-off
High Tide
1:01PM1.26m
00:57AM1.14m
1:53PM1.27m
1:54AM1.01m
2:46PM1.28m
3:00AM0.92m
3:41PM1.30m
4:12AM0.87m
4:35PM1.33m
5:17AM0.88m
5:25PM1.37m
6:11AM0.91m
6:11PM1.42m
Low Tide
7:05PM0.46m
7:14AM0.31m
8:15PM0.49m
7:57AM0.39m
9:28PM0.50m
8:45AM0.45m
10:38PM0.47m
9:39AM0.49m
11:37PM0.42m
10:35AM0.49m
00:25AM0.36m
11:28AM0.47m
1:07AM0.30m
clear
clear
clear
clear
clear
clear
cloud
cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:56
6:56
6:56
6:54
6:54
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:07
5:07
5:07
5:08
5:08
5:09
5:10
 mm
Temp °C
17
17
12
18
17
13
20
19
14
17
16
9
14
16
10
19
18
13
18
16
11
Feels °C
14
14
11
15
14
11
18
16
11
11
10
3
11
12
5
16
16
9
14
13
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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