Surf Forecasts:
Little Austi and Main Beach surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 1AM (local time) - 5ft (1.6m), 6s period, NE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 10AM (local time) - 5ft (1.5m), 7s period, NE swell with 235 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 10AM (local time) - 2ft (0.6m), 10s period with ESE 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 Wednesday (Aug 19) at 10AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 1.0m and 6s. 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 1.5m 7s and forecast to arrive on Tuesday (Aug 25) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Aug 24) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Wed 19th Aug) | 2ft (0.6m) 10s |
| Best Surf | 1AM (Tue 25th Aug) | 5ft (1.6m) 6s |
| Most Powerful | 10AM (Tue 25th Aug) | 5ft (1.5m) 7s |
Table - best surf conditions forecast for Little Austi and Main Beach over the next 16 days.
The Lowdown
Alright, Rusty here again, putting it in feet and miles. Little Austi and Main Beach is a beach and reef setup, intermediate-level spot. It’s fairly consistent and exposed to ENE swell, with the optimum direction being ENE. Water temp is 64°F, which is about 1°F above average, so nothing out of the ordinary.
The first week or so is a slow burn. From Wednesday the 19th through the following Wednesday, you’re looking at small, weak surf with combined swell energy mostly below 200 (weak to moderate). Winds are a mixed bag, often cross or cross-off, with some onshore.
The real highlight comes on Tuesday the 25th of August in the morning. Swell is about 5ft from the NE, period 7 seconds, and the combined swell energy clocks in at 235 (moderate). What seals the deal is the wind: glassy. That’s the morning to be out there. Clean, glassy conditions, decent wave height. Afternoon on that same day gets cross-onshore, so don’t expect it to last.
Friday the 28th of August offers something too – around 5ft to 5ft from the SSE, combined energy of 355 to 381 (moderate). The wind is clean cross-off, so it’s worth a look, but it’s considered marginal, so keep your expectations in check.
After that, the end of August and start of September sees pulses of SSE swell, but mostly accompanied by onshore or cross-on winds. A period of 12 seconds on the 1st of September hints at some groundswell, with combined energy of 777 (moderate to strong), but the wind is not your friend.
Crowds can be a factor sometimes, so on that standout glassy morning, expect to see a few other locals.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 22°C on Thu morning, min 12°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Warm (max 24°C on Mon morning, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | E 6 | ESE 10 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 7 | NE 6 | NE 6 | NE 6 | NE 6 | E 4 | NE 4 | ENE 9 | NE 5 | ENE 5 | ENE 4 | NE 6 | NE 7 | NE 8 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 82 | 117 | 79 | 38 | 55 | 97 | 76 | 40 | 18 | 9 | 9 | 15 | 10 | 68 | 38 | 26 | 31 | 200 | 235 | 181 | 86 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | off | cross-off | off | cross-off | off | off | cross | on | glassy | cross-off | cross | cross-off | off | cross-off | cross-off | glassy | cross-on | cross |
High Tide | 12:56PM1.29m | 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 | 7:35PM0.47m | 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 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 4 | 10 | 4 | 1 |
Temp °C | 18 | 17 | 14 | 22 | 21 | 16 | 20 | 17 | 15 | 18 | 16 | 14 | 18 | 17 | 13 | 24 | 23 | 16 | 16 | 15 | 13 |
Feels °C | 16 | 14 | 13 | 18 | 19 | 14 | 18 | 15 | 13 | 15 | 14 | 14 | 14 | 13 | 11 | 21 | 20 | 15 | 17 | 14 | 10 |
Swell 1 Height (m) Direction Period (s) | E 6 | ESE 10 | SE 9 | NE 6 | ESE 6 | ENE 6 | ENE 7 | NE 6 | NE 6 | NE 6 | S 4 | ESE 4 | S 8 | S 8 | S 10 | ENE 5 | S 10 | NE 6 | NE 7 | NE 8 | NE 8 |
| kJ | 64 | 117 | 64 | 38 | 16 | 97 | 76 | 40 | 18 | 9 | 5 | 8 | 36 | 47 | 51 | 26 | 45 | 109 | 235 | 181 | 86 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | S 8 | E 9 | ESE 6 | E 10 | S 12 | S 11 | SE 7 | S 10 | SSW 4 | NE 6 | S 9 | E 4 | S 14 | ENE 9 | S 9 | S 16 | S 9 | S 9 | S 8 | S 9 |
| kJ | 82 | 12 | 2 | 27 | 2 | 3 | 2 | 2 | 2 | 4 | 9 | 14 | 4 | 37 | 8 | 39 | 19 | 41 | 24 | 12 | 15 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 15 | — | E 11 | — | — | — | S 10 | S 5 | S 9 | S 8 | NE 6 | NE 6 | S 20 | E 14 | NE 8 | E 13 | ENE 9 | S 15 | S 14 | S 15 |
| kJ | 19 | 4 | — | 2 | — | — | — | 2 | 1 | 6 | 12 | 5 | 6 | 8 | 4 | 18 | 3 | 8 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | ENE 5 | NE 6 | — | ENE 6 | — | WNW 3 | NNW 2 | W 3 | SW 4 | SSW 4 | E 4 | NE 4 | ENE 9 | NE 5 | NW 3 | ENE 4 | NE 6 | NW 4 | — | WSW 4 |
| kJ | — | 55 | 79 | — | 55 | — | 2 | 1 | 2 | 9 | 5 | 15 | 10 | 68 | 38 | 2 | 31 | 200 | 4 | — | 24 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 438 | 0 | 0 | 0 | 0 | 0 | 5 | 282 | 330 | 413 | 5 | 1 | 250 | 0 | 1 | 1 | 0 | 0 | 5 | 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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