Surf Forecasts:
Little Austi and Main Beach surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 10PM (local time) - 6.5ft (2.0m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 7PM (local time) - 7.5ft (2.3m), 9s period, SSE swell with 826 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 7PM (local time) - 4.5ft (1.3m), 5s 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 Sunday (Sep 13) at 7PM. The primary swell is predicted to be 1.3m and 5s period with a secondary swell of 0.2m and 13s. 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 2.3m 9s and forecast to arrive on Thursday (Sep 17) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Wednesday (Sep 16) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sun 13th Sep) | 4.5ft (1.3m) 5s |
| Best Surf | 10PM (Thu 17th Sep) | 6.5ft (2.0m) 9s |
| Most Powerful | 7PM (Thu 17th Sep) | 7.5ft (2.3m) 9s |
Table - best surf conditions forecast for Little Austi and Main Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here, and I'm looking at Little Austi and Main Beach over the next couple of weeks. The start is a real bummer, honestly. We’re facing a proper flat spell.
For the first two weeks, you’re basically out of luck. The only day that looks like you might get a wet saddle is Monday the 14th of September. You might find a 3ft wave riding a NNE cross-off breeze in the morning with clean conditions, but it’s just ordinary, weak surf. That’s about the best of a bad lot, with a long run of "poor surf conditions" from the 15th all the way through to the 25th of September. This is an exposed beach and reef setup, so when the onshores kick in, it just turns into a mess. For the kite surfers, those fresh onshore days around the 16th and 17th might be more interesting than paddling out.
But hold onto your leash, because the ocean finally wakes up at the end. The standout window is the last weekend of the period—Saturday the 26th and Sunday the 27th. That's where the real promise is.
Saturday morning the 26th sees a solid 7ft SE swell start to march in. The combined wave energy jumps to a strong 620, telling you there’s some real power out there. The wind is NNE at 9 mph, giving you a clean cross-off breeze. That’s a big tick. Now this is a groundswell with a period of 8 seconds, so it's got push but isn't the kind of long-period magic that needs a specific point. It should hold up fine here. For intermediates, it's pushing the upper limit at over 5ft, so take care. For the experienced crew, this is the session to mark on your calendar.
Then on Sunday morning the 27th, you’ve got a 5ft ESE swell with a NNE cross-off breeze. The combined energy is still a solid 332, and it’s the closest this forecast gets to perfection, with the data hinting at "expect good surf conditions." It will be clean, punchy, and after two weeks of flatness, it'll feel like a celebration.
After a long, dry spell, that last weekend has some real grit to it.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Warm (max 25°C on Mon morning, min 12°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 20°C on Tue morning, min 9°C on Tue night). Winds increasing (light winds from the S on Tue morning, fresh winds from the S by Wed morning). | ||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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 13 | ENE 14 | ENE 14 | ENE 13 | NE 5 | NE 5 | NNE 7 | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | ENE 14 | ENE 12 | NE 13 | NE 13 | NE 13 | SSE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 18 | 19 | 19 | 17 | 14 | 55 | 237 | 81 | 64 | 188 | 112 | 55 | 18 | 20 | 15 | 7 | 7 | 7 | 534 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross | off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross-off |
High Tide | 8:46AM1.41m | 8:57PM1.46m | 9:23AM1.44m | 9:37PM1.35m | 9:59AM1.44m | 10:18PM1.22m | 10:37AM1.41m | 11:00PM1.09m | 11:17AM1.36m | 11:46PM0.98m | 12:02PM1.30m | 00:43AM0.90m | |||||||
Low Tide | 2:37AM0.06m | 2:48PM0.16m | 3:10AM0.12m | 3:33PM0.18m | 3:42AM0.20m | 4:18PM0.23m | 4:14AM0.28m | 5:05PM0.29m | 4:47AM0.37m | 5:56PM0.37m | 5:23AM0.46m | 6:56PM0.43m | |||||||
 |  |  | | | |  | |  | | | |  | | | | | | | |
 | — | 6:01 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 2 | — | — | — | — | — | — |
Temp °C | 13 | 20 | 18 | 13 | 21 | 19 | 16 | 25 | 22 | 17 | 20 | 18 | 11 | 14 | 14 | 13 | 14 | 14 | 10 |
Feels °C | 13 | 16 | 14 | 12 | 17 | 15 | 15 | 22 | 20 | 16 | 18 | 16 | 4 | 5 | 6 | 5 | 9 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 12 | S 10 | S 10 | S 11 | S 10 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | ENE 14 | ENE 12 | NE 13 | NE 13 | S 18 | SSE 9 |
| kJ | 326 | 336 | 214 | 151 | 143 | 138 | 130 | 81 | 64 | 109 | 112 | 55 | 11 | 20 | 15 | 7 | 7 | 25 | 534 |
Swell 2 Height (m) Direction Period (s) | S 19 | S 19 | S 19 | S 20 | NE 5 | ENE 13 | S 12 | S 11 | S 11 | S 10 | S 9 | S 6 | ENE 13 | ENE 14 | — | — | NE 13 | NE 13 | E 13 |
| kJ | 62 | 175 | 113 | 119 | 14 | 17 | 174 | 119 | 79 | 47 | 27 | 29 | 18 | 20 | — | — | 7 | 7 | 3 |
Swell 3 Height (m) Direction Period (s) | ENE 13 | ENE 14 | ENE 14 | ENE 13 | S 16 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 13 | S 9 | — | — | — | — | — | — | NE 13 |
| kJ | 18 | 19 | 19 | 17 | 46 | 17 | 17 | 17 | 17 | 15 | 16 | 14 | — | — | — | — | — | — | 7 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 3 | NE 4 | NE 5 | NE 5 | NNE 7 | — | NE 6 | NE 6 | SW 3 | — | S 9 | S 9 | S 10 | S 10 | S 10 | S 9 | — |
| kJ | — | — | 9 | 14 | 23 | 55 | 237 | — | 92 | 188 | 6 | — | 1776 | 2079 | 2923 | 2964 | 1753 | 1079 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 438 | 1 | 8 | 438 | 0 | 0 | 0 | 0 | 5 | 7 | 7 | 905 | 661 | 89 | 41 | 41 | 0 |
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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