Surf Forecasts:
Little Austi and Main Beach surf forecast from 20 Jul 2026:
- Best quality surf: Monday 20 Jul, 10PM (local time) - 5.5ft (1.7m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Monday 20 Jul, 10PM (local time) - 5.5ft (1.7m), 11s period, ENE swell with 656 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 10PM (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 10PM. The primary swell is predicted to be 1.7m and 11s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Little Austi and Main Beach in the next 16 days are 1.7m 11s and forecast to arrive on Monday (Jul 20) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 14s period and expected on Saturday (Jul 25) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Mon 20th Jul) | 5.5ft (1.7m) 11s |
| Best Surf | 10PM (Mon 20th Jul) | 5.5ft (1.7m) 11s |
| Most Powerful | 10PM (Mon 20th Jul) | 5.5ft (1.7m) 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 on the cards for Little Austi and Main Beach. It’s a bit of a mixed bag, but we’ve got a couple of sessions that are worth paddling out for.
First up, Monday the 20th of July. This is the standout window of the whole 16-day run. We’ve got a clean 6ft swell rolling in from the ENE, with a decent 11-second period. The combined wave energy is moderate at 764, and the water’s sitting at 65°, which is pretty much normal for this time of year. The wind is a gentle cross-off from the NNE, so it’s going to be clean. This is your best bet for the whole forecast—expect very good conditions. With a fairly consistent break and crowds only sometimes, this is the one to aim for.
Tuesday the 21st of July starts off well in the morning. The swell drops a touch to 5ft, still from the ENE, with a 10-second period. Wave energy is moderate at 388, and the wind is a light cross-off from the NNW, keeping it clean. Good surf for the morning session. By the afternoon, the wind swings to the NE and picks up, creating a cross-chop, so the quality drops off significantly.
Wednesday the 22nd of July is a solid option. The swell is 4ft from the ENE, with a 10-second period. Mornings are clean with a light cross-off from the WNW, and the afternoon turns glassy with a WSW breeze. Both windows have good conditions, with moderate wave energy around 210-238.
Thursday the 23rd of July sees the swell drop to 3ft, and the wind cranks up to 15 mph from the west. Even though it’s clean, the wave energy is weak (116 dropping to 97), and the surf quality is poor. Not worth it.
From Friday the 24th of July all the way through to Tuesday the 4th of August, the surf is flat or tiny. You’re looking at swells of 1ft or less, with wave energy mostly below 30. There are several days of glassy conditions and offshore winds, but there’s simply no swell to ride. It’s a long, quiet stretch for the beach. The only glimmer is a very long period groundswell showing up late on the 27th and 28th, but with heights of just 0.3ft, it’s not going to do anything here. The break is exposed and fairly consistent, so it’s just a waiting game.
For the best surf, it’s all about Monday the 20th and Tuesday morning the 21st. Wednesday is also a good, clean option if you want a smaller, glassy session. The rest of the week is a write-off. Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed morning, min 10°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Sat morning, min 6°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | NE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 743 | 575 | 388 | 331 | 218 | 231 | 210 | 142 | 94 | 94 | 53 | 28 | 28 | 28 | 18 | 14 | 6 | 6 | 2 | 2 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross | off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off |
High Tide | 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 | |||||||
 |  | | |  |  | | | | | | | | | | | | | | | |
 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:08 | — | — | 5:09 | — | — | 5:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 11 | 18 | 17 | 13 | 21 | 20 | 14 | 18 | 15 | 10 | 13 | 13 | 10 | 18 | 16 | 12 | 16 | 16 | 13 |
Feels °C | 14 | 9 | 15 | 14 | 11 | 19 | 18 | 11 | 12 | 9 | 4 | 9 | 9 | 5 | 12 | 10 | 8 | 13 | 14 | 9 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | S 8 | S 9 | S 10 | S 14 | S 11 | S 11 | S 12 | S 11 | S 10 | S 9 |
| kJ | 743 | 575 | 388 | 331 | 218 | 231 | 210 | 142 | 94 | 94 | 239 | 471 | 432 | 1407 | 566 | 361 | 529 | 451 | 338 | 241 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 | S 7 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | NE 7 | NE 7 |
| kJ | 127 | 82 | 55 | 31 | 17 | 17 | 20 | 8 | 8 | 10 | 53 | 28 | 28 | 28 | 18 | 14 | 6 | 6 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | SSE 15 | SE 14 | S 15 | S 15 | S 14 | SE 13 | S 12 | — | E 9 | SE 8 | S 17 | E 7 | S 21 | E 12 | S 20 | S 18 | N 9 | E 8 | E 8 | S 13 |
| kJ | 21 | 8 | 19 | 17 | 4 | 7 | 3 | — | 2 | 3 | 6 | 1 | 34 | 3 | 8 | 58 | 1 | 1 | 1 | 4 |
Wind waves Height (m) Direction Period (s) | — | NNE 3 | N 3 | NE 3 | NNE 4 | — | — | WSW 3 | SW 5 | SW 4 | S 8 | — | — | W 3 | — | — | WSW 4 | — | — | — |
| kJ | — | 6 | 4 | 7 | 12 | — | — | 2 | 20 | 21 | 316 | — | — | 5 | — | — | 7 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 100 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 8 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Best forecast wave conditions in Illawarra | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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