Surf Forecasts:
Thirroul surf forecast from 5 Aug 2026:
- Best quality surf: Monday 10 Aug, 4PM (local time) - 4.5ft (1.3m), 9s period, ENE swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 10AM (local time) - 5.5ft (1.7m), 9s period, ENE swell with 459 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 7AM (local time) - 1.5ft (0.5m), 8s period with S swell.
Best Forecast Surf Conditions for Thirroul this week:
The surf forecast for Thirroul over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 7AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.3m and 5s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 1.7m 9s and forecast to arrive on Monday (Aug 10) at 10AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Monday (Aug 10) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 6th Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 4PM (Mon 10th Aug) | 4.5ft (1.3m) 9s |
| Most Powerful | 10AM (Mon 10th Aug) | 5.5ft (1.7m) 9s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
Alright, Rusty here, let’s break down what’s coming at Thirroul over the next couple of weeks.
It’s a quiet, drawn-out spell, no two ways about it. The first few days are tiny, with barely any energy. Water temp is around 65°F, which is pretty normal for this time of year.
Wednesday (August 5th) is a total dud – 1.0ft of easterly junk, energy reading of 36 (weak). Cross-off wind keeps it clean, but there’s no push. Thursday morning (August 6th) bumps up to 3ft from the south, period is a short 8 seconds, energy 112 (moderate). It’s surfable, but ordinary. The afternoon turns sloppy.
Friday (August 7th) is another small day – 2ft from the SSE, energy 98 (weak). Morning is clean, but not worth a special trip.
Saturday morning (August 8th) offers a little hope – 2ft from the south with glassy conditions. Energy is low at 92 (weak), but it’s the cleanest window so far. The afternoon gets choppy.
Sunday (August 9th) is similar – 3ft from the ENE, energy 134 (moderate), clean morning, then wind picks up.
Monday (August 10th) is the standout. The morning sees a 6ft east-northeasterly swell, with a fresh offshore wind from the west-northwest, energy jumping to 462 (strong). The swell period is a workable 9 seconds. This is the biggest energy we’ll see, and the offshore wind will clean it up nicely. The crowd factor is “sometimes,” so expect a few locals out. The afternoon drops to 4ft but stays clean, energy 298 (moderate).
Tuesday (August 11th) drops off hard – 2ft, period 12 seconds from the south, but too small. Energy 162 (moderate). Offshore wind keeps it tidy, but not worth chasing.
From Wednesday (August 12th) through to Thursday (August 20th), it’s a long, quiet run. Swell sits between 1ft and 3ft, with energy mostly under 200 (moderate at best). Winds are mixed – some offshore, some glassy moments, but no real push. The 16th (Sunday) has a glassy 2ft from the south, but it’s barely there. The 18th (Tuesday) morning is flat calm and glassy with 1ft easterly, energy only 43 (weak).
So, the only real standout is Monday, August 10th – the morning session with that 6ft east-northeasterly swell and clean offshore winds. It’s not a classic, but it’s the best we’ve got. Everything else is small, weak, and best left for a paddle.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Wed afternoon, min 7°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 20°C on Sun afternoon, min 8°C on Sat night). Winds increasing (calm on Sat morning, fresh winds from the NW by Sun night). | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 10 | E 9 | SSE 11 | S 8 | S 8 | SSE 10 | SSE 9 | SSE 9 | S 8 | S 8 | ENE 7 | E 8 | ENE 9 | ENE 9 | NE 6 | ENE 9 | ENE 9 | NE 9 | S 12 | ENE 10 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 18 | 15 | 23 | 103 | 93 | 38 | 86 | 86 | 50 | 42 | 31 | 46 | 111 | 80 | 153 | 459 | 295 | 88 | 77 | 55 | 141 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross-on | off | glassy | cross-on | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | off |
High Tide | 12:53PM1.32m | 1:01AM1.09m | 1:52PM1.36m | 2:15AM1.00m | 2:58PM1.41m | 3:39AM0.97m | 4:05PM1.49m | 4:58AM0.98m | 5:10PM1.58m | 6:05AM1.04m | 6:08PM1.67m | 7:01AM1.10m | 7:01PM1.73m | ||||||||
Low Tide | 7:13PM0.42m | 7:08AM0.31m | 8:30PM0.40m | 8:07AM0.36m | 9:51PM0.34m | 9:16AM0.39m | 11:05PM0.25m | 10:26AM0.38m | 00:08AM0.14m | 11:31AM0.33m | 1:02AM0.05m | 12:29PM0.28m | 1:50AM-0.01m | ||||||||
 | |  |  | | | | | | | | | |  |  | | | | | |  | |
 | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — |
 | — | 5:17 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:21 | — | — | 5:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 17 | 18 | 12 | 16 | 16 | 11 | 16 | 15 | 11 | 16 | 16 | 11 | 19 | 20 | 18 | 13 | 14 | 11 | 17 | 17 | 12 |
Feels °C | 12 | 13 | 6 | 13 | 12 | 8 | 12 | 12 | 9 | 13 | 12 | 9 | 14 | 15 | 13 | 5 | 8 | 5 | 11 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 9 | SSE 11 | S 8 | S 8 | S 7 | SSE 9 | SSE 9 | S 8 | S 8 | S 7 | E 8 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | ENE 9 | NE 9 | ENE 9 | S 8 | S 10 |
| kJ | 18 | 15 | 23 | 103 | 93 | 26 | 86 | 86 | 50 | 42 | 14 | 46 | 111 | 80 | 73 | 459 | 295 | 88 | 48 | 50 | 141 |
Swell 2 Height (m) Direction Period (s) | E 7 | S 10 | E 8 | E 9 | E 9 | SSE 10 | E 9 | ENE 9 | SSE 9 | ENE 7 | SE 9 | NE 4 | SSE 8 | SSE 8 | E 14 | S 13 | S 13 | S 11 | S 9 | ENE 10 | ENE 10 |
| kJ | 4 | 9 | 6 | 6 | 6 | 38 | 6 | 15 | 47 | 19 | 19 | 9 | 6 | 6 | 16 | 3 | 3 | 37 | 37 | 55 | 59 |
Swell 3 Height (m) Direction Period (s) | E 13 | S 4 | S 4 | E 12 | E 12 | S 9 | SE 12 | E 12 | ENE 7 | SSE 9 | E 8 | SSE 8 | S 5 | SE 10 | S 7 | — | — | E 13 | S 12 | S 12 | NE 7 |
| kJ | 14 | 1 | 1 | 3 | 3 | 14 | 6 | 3 | 18 | 31 | 12 | 14 | 2 | 4 | 1 | — | — | 3 | 77 | 24 | 2 |
Wind waves Height (m) Direction Period (s) | WSW 3 | — | WSW 3 | W 3 | ENE 2 | — | W 3 | — | — | — | ENE 7 | — | NNE 5 | NE 5 | NE 6 | WNW 4 | W 4 | W 4 | WNW 2 | — | NW 3 |
| kJ | 2 | — | 4 | 1 | 1 | — | 1 | — | — | — | 31 | — | 15 | 35 | 153 | 37 | 46 | 10 | 1 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 0 | 51 | 0 | 0 | 48 | 0 | 0 | 51 | 0 | 0 | 100 | 84 | 280 | 0 | 2 | 2 | 0 | 0 |
Best forecast wave conditions in Illawarra | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Thirroul surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Thirroul Surf forecast
The above surf forecast table for Thirroul provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thirroul can be found by selecting the local surf guide option on the grey menu. Our Thirroul 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 (Thirroul) 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 Thirroul 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 Thirroul, camping, hotels and holiday cottages in Illawarra, consider staying in Wollongong which is 12 km (7 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 19 km (12 miles) away, Engadine, Cronulla and Caringbah.
Nearest