Surf Forecasts:
Little Austi and Main Beach surf forecast from 17 Jul 2026:
- Best quality surf: Sunday 19 Jul, 7PM (local time) - 6ft (1.9m), 10s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 7AM (local time) - 7ft (2.1m), 11s period, ENE swell with 1,124 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 7PM (local time) - 6ft (1.9m), 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 Sunday (Jul 19) at 7PM. The primary swell is predicted to be 1.9m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Little Austi and Main Beach in the next 16 days are 2.1m 11s and forecast to arrive on Sunday (Jul 19) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 8s period and expected on Thursday (Jul 23) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sun 19th Jul) | 6ft (1.9m) 10s |
| Best Surf | 7PM (Sun 19th Jul) | 6ft (1.9m) 10s |
| Most Powerful | 7AM (Sun 19th Jul) | 7ft (2.1m) 11s |
Table - best surf conditions forecast for Little Austi and Main Beach over the next 16 days.
The Lowdown
Alright, this is Rusty, and let’s see what the next couple of weeks look like.
We start off pretty slow. Friday the 17th through the weekend, the surf is small and choppy. A little east swell is there, but it’s weak – energy levels are between 53 and 81 (combined energy). The wind is either onshore or cross-onshore, and the waves are just poor. Not worth getting wet.
The first real chance for a surf comes on Monday, July 20th. Overnight, the wind switches. Monday morning at Little Austi and Main Beach, we’ve got a 6ft swell from the ENE, with a period of 10 seconds. That’s a solid groundswell. The wind is light and offshore from the NW, so the waves will be clean. The combined energy is 642 (moderate wave energy). The water temp is about 64°, which is normal for the season. This is the standout session – the best mix of size and glassy conditions. This spot is fairly consistent, but crowds can be a problem sometimes, so get out there early.
Tuesday, July 21st, is also a good one, especially in the morning. The wind is completely glassy, zero from the north, and the swell holds at 5ft from the ENE, 10 seconds. Combined energy is 380. It’s a bit smaller than Monday, but glassy conditions are a treat. The morning will be sweet.
After Tuesday, the swell drops off fast. From Wednesday the 22nd of July through the end of the month, the waves are under 3ft, and the energy drops from 174 down to 41. The wind shifts around, but the main problem is the lack of swell. This flat spell lasts for about 8 or 9 days. The 23rd of July has a glassy morning, but the swell is only 3ft – not enough to get excited about.
The waves get super small, sometimes only 0.3ft to 1ft, with long periods (15-16 seconds) but almost no height. There’s a lot of cross-offshore wind, but it’s on flat water. No surfing.
Finally, on the 1st of August, we see a little bump of 2ft from the south, but the period is short (6 seconds) and the energy is only 40. Still poor.
So, the best surf is Monday morning, July 20th, with the offshore wind and 6ft ENE swell. Tuesday morning, July 21st, is also a winner with glassy conditions. After that, it’s a long wait for something to change. Keep an eye on it, but it’s a quiet stretch.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 17°C on Mon morning, min 10°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Wed morning, min 9°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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) | E 7 | E 7 | E 6 | E 7 | ENE 8 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 53 | 51 | 54 | 79 | 235 | 1046 | 778 | 703 | 619 | 543 | 464 | 380 | 331 | 275 | 168 | 133 | 96 | 100 | 73 | 71 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | glassy | off | cross | off | glassy | cross-on | cross-off | cross-off | cross-on | cross-off | glassy | on | cross-off |
High Tide | 10:31PM1.62m | 11:23AM1.22m | 11:18PM1.47m | 12:12PM1.24m | 00:06AM1.30m | 1:01PM1.26m | 00:57AM1.14m | 1:53PM1.27m | 1:54AM1.01m | 2:46PM1.28m | 3:00AM0.92m | 3:41PM1.30m | ||||||||
Low Tide | 4:10PM0.28m | 5:13AM0.04m | 5:05PM0.33m | 5:54AM0.13m | 6:03PM0.40m | 6:34AM0.22m | 7:05PM0.46m | 7:14AM0.31m | 8:15PM0.49m | 7:57AM0.39m | 9:28PM0.50m | 8:45AM0.45m | 10:38PM0.47m | |||||||
 |  |  | | | |  |  | | | | | | | | | | | | | |
 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — |
 | 5:05 | — | — | 5:05 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 12 | 17 | 17 | 13 | 16 | 15 | 12 | 20 | 18 | 12 | 16 | 15 | 12 |
Feels °C | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 11 | 14 | 14 | 11 | 14 | 14 | 10 | 16 | 15 | 9 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 6 | E 7 | ENE 8 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | S 7 |
| kJ | 53 | 51 | 54 | 79 | 235 | 1046 | 778 | 703 | 619 | 543 | 464 | 380 | 331 | 275 | 168 | 133 | 96 | 100 | 73 | 92 |
Swell 2 Height (m) Direction Period (s) | S 5 | S 10 | S 10 | S 10 | S 8 | S 17 | S 13 | S 13 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 | S 9 | ENE 9 |
| kJ | 28 | 100 | 46 | 44 | 23 | 209 | 86 | 153 | 178 | 127 | 82 | 55 | 48 | 30 | 30 | 20 | 18 | 8 | 41 | 71 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 21 | S 21 | S 20 | S 18 | SE 17 | S 16 | SE 16 | SSE 15 | SSE 15 | SE 14 | S 15 | S 15 | SE 13 | SE 13 | S 12 | — | S 12 | S 16 | S 13 |
| kJ | 21 | 9 | 34 | 31 | 58 | 12 | 43 | 10 | 23 | 21 | 8 | 18 | 17 | 7 | 6 | 3 | — | 3 | 5 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | S 4 | SSW 4 | — | — | — | — | — | NE 3 | — | — | — | — | WNW 2 | SW 3 | SW 3 | SSW 4 | S 5 | — |
| kJ | — | — | 6 | 2 | — | — | — | — | — | 3 | — | — | — | — | 1 | 3 | 4 | 24 | 40 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 5 | 5 | 5 | 7 | 5 | 1 | 7 | 0 | 0 | 38 | 0 | 0 | 100 | 0 | 1 | 7 | 0 | 0 | 7 | 0 |
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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