Surf Forecasts:
Little Austi and Main Beach surf forecast from 21 Jul 2026:
- Best quality surf: Tuesday 21 Jul, 1PM (local time) - 4.5ft (1.4m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 21 Jul, 1PM (local time) - 4.5ft (1.4m), 10s period, ENE swell with 388 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 1PM (local time) - 4.5ft (1.4m), 10s 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 Tuesday (Jul 21) at 1PM. The primary swell is predicted to be 1.4m and 10s 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 1.4m 10s and forecast to arrive on Tuesday (Jul 21) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 10s period and expected on Friday (Jul 24) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Tue 21st Jul) | 4.5ft (1.4m) 10s |
| Best Surf | 1PM (Tue 21st Jul) | 4.5ft (1.4m) 10s |
| Most Powerful | 1PM (Tue 21st Jul) | 4.5ft (1.4m) 10s |
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. It’s a bit of a slow burn, but there are a couple of moments that’ll get the heart going.
We start off on Tuesday, 21st July with some solid, clean surf. The swell is 5 ft from the ENE with a 10-second period, and the combined energy is up there at a healthy 410 (moderate wave energy). The water temperature is sitting at 65°, which is about normal for this time of year. A light NNW breeze keeps it cross-off, so the waves are going to be nicely groomed. This is a good one for a confident intermediate surfer.
Wednesday morning, 22nd July, sees the swell dropping a touch to 4 ft, but still from the ENE with a 10-second period. The wind swings to a light W, keeping it cross-off and clean. The combined energy is 238 (moderate). It’s a smaller, more manageable session, but still good quality.
Then we hit a rough patch. From Thursday, 23rd July all the way through to Friday, 31st July, the surf drops off hard. We’re looking at weak, tiny waves, often with messy onshore winds. There’s a long gap of about eight days where you’d be better off waxing your board and waiting.
Now, here’s where it gets interesting. On Friday, 31st July, in the afternoon, the swell jumps up to 7 ft from the SSE. The period is short at 8 seconds, and the combined energy hits 561 (moderate to strong). However, the wind is cross-onshore at 9 mph, which will mess up the face. This one is for the experts only, and it’s a bit of a gamble with the chop.
The real standout, the one you want to circle on the calendar, is Saturday morning, 1st August. The swell is still solid at 5 ft from the SE with a 9-second period, and the combined energy is 408 (moderate). The wind is completely calm, glassy. It’s going to be absolutely pristine. The crowd situation is possible, so get down early. This is the best of the lot.
After that, we see a few more days of smaller, wind-affected waves, though Monday, 3rd August, has some moderate energy, and Tuesday, 4th August, brings a clean morning with offshore winds. Still, nothing beats that Saturday morning glass-off.
Alright, that’s the run-down. Keep your eyes on that first Saturday of August.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed morning, min 6°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the W by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sat morning, min 7°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
AM | 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 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | SSE 18 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SE 14 | SE 13 | SE 14 | SE 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 410 | 331 | 296 | 231 | 231 | 172 | 119 | 94 | 54 | 28 | 103 | 18 | 14 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | on | cross-off | glassy | cross | cross-off |
High Tide | 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 | 6:56AM0.95m | 6:53PM1.48m | ||||||||
Low Tide | 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 | 12:15PM0.43m | 1:45AM0.24m | ||||||||
 | |  |  | | |  | | | | | | | | | | | | | | | |
 | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:08 | — | — | 5:09 | — | — | 5:10 | — | — | 5:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 12 | 21 | 20 | 14 | 17 | 16 | 10 | 13 | 14 | 8 | 19 | 16 | 13 | 16 | 16 | 10 | 18 | 19 | 12 |
Feels °C | 15 | 14 | 10 | 19 | 18 | 11 | 11 | 10 | 3 | 9 | 11 | 4 | 14 | 11 | 7 | 13 | 13 | 7 | 15 | 16 | 8 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | S 9 | S 9 | S 12 | S 12 | S 11 | S 10 | S 11 | S 10 | S 10 | S 9 | S 9 | S 8 | S 8 |
| kJ | 410 | 331 | 296 | 231 | 231 | 172 | 119 | 94 | 181 | 480 | 763 | 1037 | 564 | 300 | 272 | 477 | 394 | 246 | 150 | 90 | 46 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 | S 9 | ENE 9 | ENE 8 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 7 | SE 14 | SE 16 |
| kJ | 55 | 31 | 17 | 17 | 20 | 8 | 8 | 14 | 54 | 28 | 28 | 18 | 14 | 6 | 6 | 6 | 6 | 2 | 2 | 8 | 10 |
Swell 3 Height (m) Direction Period (s) | S 15 | S 15 | S 14 | SE 13 | S 12 | — | E 9 | SE 8 | S 17 | E 7 | SSE 18 | — | E 9 | E 9 | E 9 | E 8 | — | SE 14 | SE 13 | NE 7 | NE 7 |
| kJ | 19 | 17 | 4 | 7 | 3 | — | 2 | 3 | 6 | 1 | 103 | — | 2 | 2 | 2 | 1 | — | 7 | 7 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | NNW 3 | NE 4 | NNE 4 | — | — | WSW 3 | SW 5 | SW 4 | WSW 4 | S 9 | — | — | — | — | WSW 3 | — | — | NNW 2 | — | — | WSW 2 |
| kJ | 1 | 13 | 34 | — | — | 6 | 24 | 24 | 14 | 771 | — | — | — | — | 3 | — | — | 1 | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 55 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 35 | 1 | 1 | 1 | 1 | 1 | 34 | 1 | 1 | 19 | 1 |
Best forecast wave conditions in Illawarra | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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