Surf Forecasts:
Little Austi and Main Beach surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 7AM (local time) - 3ft (0.9m), 6s period, NE swell with offshore winds.
- Most powerful swell: Wednesday 26 Aug, 10AM (local time) - 6.5ft (2.0m), 6s period, SSE swell with 329 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 7AM (local time) - 3ft (0.9m), 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 7AM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.6m and 8s. 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 2.0m 6s and forecast to arrive on Wednesday (Aug 26) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Thursday (Aug 20) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 20th Aug) | 3ft (0.9m) 6s |
| Best Surf | 7AM (Thu 20th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 10AM (Wed 26th Aug) | 6.5ft (2.0m) 6s |
Table - best surf conditions forecast for Little Austi and Main Beach over the next 16 days.
The Lowdown
Alright, surfers, this is Rusty, and I’m giving you the straight talk on Little Austi and Main Beach. The next two weeks are looking fairly bleak, with a long stretch of tiny, weak surf, and only one single pulse of serious energy way out at the end. The water temp is 64°, which is normal for the season.
Starting Wednesday, August 19th, it’s a total bust. A 3ft swell from the ESE with a short period and a cross-shore wind means messy, weak waves. The energy is low (173). Thursday the 20th and Friday the 21st bring a little cleaner conditions with offshore winds, but the swell is still a pathetic 3ft from the NE, with a 6-second period – barely a bump. The energy drops from 92 to 46. You might get a surfable wave, but it’s not worth the drive.
From Saturday the 22nd all the way through the end of the month, there’s a long stretch of nothing. Swell heights are under 2ft, with weak energy and onshore or cross-shore winds. There’s a brief, clean window on Monday, August 24th afternoon with a 3ft swell from the ENE, but the energy is still weak (50). It’s average, at best.
The only true standout shows up way out on Wednesday, September 2nd. A massive 12ft swell from the SSE with a 12-second period hits, and the energy is a whopping 3688. This is a big, powerful groundswell. The wind is a gentle cross-onshore, so it’s not glassy, but it’s rideable. This is a serious, expert-only swell. At this size, it’s dangerous for anyone but the most experienced. This is a long-range call, so keep an eye on the forecast, but it’s the only game in town. Thursday the 3rd backs down to a 7ft swell from the SE, still with good energy (1072), but the wind turns more onshore, making it rough.
So, the bottom line: the next 12 days are a total flat spell. The only real chance for a wave is that big one on Wednesday, September 2nd. If you’re a seasoned surfer, that’s your moment. For everyone else, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 12°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Tue afternoon. Warm (max 23°C on Mon morning, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | NE 6 | NE 6 | NE 6 | ENE 6 | NE 6 | NE 6 | NNE 6 | NE 6 | NE 6 | NE 6 | ENE 9 | ENE 4 | ENE 5 | NE 5 | ENE 6 | ENE 7 | ENE 9 | NE 9 | NE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 81 | 46 | 49 | 113 | 59 | 46 | 24 | 12 | 17 | 5 | 8 | 15 | 28 | 30 | 54 | 40 | 75 | 84 | 79 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | glassy | off | cross-off | cross-off | cross-on | cross-off | glassy | cross | off | off | cross-off | glassy | on | cross-on | cross |
High Tide | 1:14AM0.93m | 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 | |||||||
Low Tide | 6:58AM0.47m | 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 | |||||||
 |  |  |  | | | |  | | | | | | | |  |  | |  | |
 | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 13 | 15 | 13 |
Temp °C | 14 | 21 | 19 | 16 | 20 | 20 | 15 | 20 | 17 | 13 | 15 | 16 | 13 | 23 | 23 | 16 | 13 | 13 | 13 |
Feels °C | 13 | 18 | 17 | 15 | 18 | 17 | 13 | 18 | 15 | 12 | 14 | 13 | 12 | 20 | 21 | 14 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SE 9 | NE 6 | ESE 6 | ENE 6 | NE 6 | NE 6 | NNE 6 | NE 6 | S 5 | NE 6 | S 9 | S 7 | ENE 5 | NE 5 | ENE 6 | ENE 7 | ENE 9 | NE 9 | NE 9 |
| kJ | 81 | 46 | 16 | 113 | 59 | 46 | 24 | 12 | 7 | 5 | 102 | 50 | 28 | 30 | 54 | 40 | 75 | 84 | 79 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 8 | E 10 | S 12 | S 11 | S 10 | S 10 | SSW 5 | S 8 | S 4 | NE 6 | S 15 | S 10 | S 9 | S 11 | S 10 | S 9 | S 16 | S 16 |
| kJ | 2 | 43 | 8 | 3 | 2 | 2 | 2 | 5 | 5 | 3 | 5 | 39 | 50 | 38 | 108 | 66 | 60 | 20 | 20 |
Swell 3 Height (m) Direction Period (s) | — | E 11 | — | S 13 | — | — | E 9 | S 9 | E 9 | S 9 | ENE 9 | S 20 | S 7 | S 11 | NE 9 | NE 9 | S 16 | — | S 16 |
| kJ | — | 2 | — | 3 | — | — | 2 | 6 | 2 | 6 | 8 | 8 | 14 | 39 | 12 | 21 | 21 | — | 20 |
Wind waves Height (m) Direction Period (s) | NE 6 | — | NE 6 | — | NW 3 | NW 3 | — | — | NE 6 | — | — | ENE 4 | NNW 3 | NW 2 | — | — | — | S 4 | SSE 4 |
| kJ | 79 | — | 49 | — | 1 | 2 | — | — | 17 | — | — | 15 | 2 | 1 | — | — | — | 28 | 19 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 5 | 158 | 336 | 330 | 158 | 1 | 38 | 1 | 1 | 0 | 0 | 7 | 7 | 7 |
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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