
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
Right, grab a coffee, let’s see what we’ve got. The next couple of weeks are a real mixed bag for Little Austi and Main Beach (Little Austi and Main Beach). The week ahead is mostly a write-off with tiny, weak swell, but we’ve got a proper pulse of energy coming through from Monday the 25th onwards that looks genuine. Until then, you’ll be fighting for scraps. The water’s sitting at 64° and that’s pretty normal for this time of year, nothing out of the ordinary.
We start this Friday the 11th and it’s a total flat spell. The swell is a measly 0.7 ft from the east-northeast, with a long period of 14 seconds that just doesn’t have enough oomph to get anything going. Combine that with a cross-on shore wind and you’re looking at a chop-fest. This pattern of tiny, poor surf stretches all the way through the weekend and into the early part of next week. Saturday morning is clean with that north wind, but there’s still nothing on the face. The swell heights are stuck between 0.7 ft and 2 ft for days.
Things start to look a *little* different on Monday morning the 14th. We get a pulse of 4 ft from the north-east, period of 7 seconds, and the wind goes light offshore from the north-northwest. That combo delivers a bit of bump at the break, and the combined swell energy hits 229 (moderate energy). It’s surfable for an intermediate but don’t expect the world. That cleaner window gets wrecked by a strong onshore in the afternoon though.
Then we drop back into flatness. The mornings of the 15th and 16th are tiny again, with cross-on wind and barely any energy. This gap of flat or near-flat conditions runs for about a week, from the 11th right up to the 18th.
But here’s the one that has me excited. The morning of Monday the 25th looks like the standout in the whole forecast. We’ve got a solid 7 ft of east-northeast swell with an 8-second period building, and the wind drops to a light glassy texture from the east-northeast. The water will be flat as a tack. That’s a serious amount of energy coming in – 948 (strong wave energy) is a big number for this spot. It’s going to be big, clean, and powerful. This is not for the faint of heart; 7 ft with that energy is expert territory. The swell direction from the east-northeast matches the optimum, so the reef and beach setup should handle it well.
The afternoon of the 25th picks up even more size, hitting 8 ft with 982 energy, but the wind turns gentle cross-shore, which will put a bit of texture on the face. That’s still an incredible session for those who can handle it. By Saturday morning the 26th, the swell drops back to 6 ft but the wind goes glassy again – that’s a fine morning for experienced crew before the onshore shows up later.
Take the Monday 25th morning as your bulletin point: big, clean, powerful east-northeast swell and glassy conditions. It’s a long way out so keep an eye on the forecasts, but this one looks like a true standout. If you’re not an expert, stick to the earlier, smaller ocean energy on the 14th. Otherwise, for the rest of the month it’s a waiting game.
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 | |||||||||||||||||||
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 |
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 |
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 |
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 | — |
— | — | 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.










