Surf Forecasts:
Thirroul surf forecast from 7 Aug 2026:
- Best quality surf: Thursday 13 Aug, 10AM (local time) - 7.5ft (2.3m), 9s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 7.5ft (2.3m), 9s period, SSW swell with 808 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 7AM (local time) - 2.5ft (0.7m), 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 Saturday (Aug 08) at 7AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 2.3m 9s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Thursday (Aug 13) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 8th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 10AM (Thu 13th Aug) | 7.5ft (2.3m) 9s |
| Most Powerful | 10AM (Thu 13th Aug) | 7.5ft (2.3m) 9s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s on the cards for Thirroul.
We’re in a bit of a flat spell to kick things off. The first few days are pretty ordinary, with tiny waves and mostly messy wind. Saturday the 8th and Sunday the 9th have small, weak swell around 2ft to 3ft but the wind is all over the shop – glassy at times but then cross-on or cross-off. The energy’s barely registering (91 to 171), so not much to get excited about.
Monday the 10th sees a jump in size – 6ft in the morning from the ENE with cross-off wind – but the energy is still moderate (576) and the forecast calls it marginal. The afternoon drops to 5ft but the wind swings fresh cross-off, still not great. Tuesday the 11th is cleaner with offshore wind (W 12 mph) but the swell is tiny again at 2ft (81 energy) – surfable but nothing special.
Wednesday the 12th is similarly small and ordinary, with poor conditions flagged. The real standout window appears on Thursday the 13th. The morning brings a solid 8ft SSW swell, clean with moderate offshore wind (WSW 9 mph), and the energy jumps to 1162 – proper moderate to strong wave energy. This is the pick of the forecast for experienced surfers, as that size is too much for beginners. The swell direction (SSW) isn’t the ideal SE for Thirroul, but the quality is there. The afternoon drops to 6ft with onshore wind, so the morning session is the go.
Friday the 14th starts glassy and clean with 4ft S swell, good energy (250), and calm conditions. That’s a nice, more user-friendly option after the bigger Thursday.
After that, we drift back into mediocrity. Saturday the 15th through to the middle of the next week serve up onshore winds, cross-shore chop, and swell that struggles to get clean. There is a potential bright spot on Thursday the 20th: the morning has 5ft E swell, light cross-off wind (N 6 mph), and clean conditions (291 energy) – that could be alright. Friday the 21st is small but clean again, then Saturday the 22nd afternoon looks decent with 4ft ENE and offshore wind (W 12 mph) giving moderate offshore and clean conditions (316 energy). Sunday the 23rd rounds out with 4ft ENE and gentle cross-off wind, clean and fun.
Overall, the best on offer is the morning of Thursday the 13th – that’s the one to clear the diary for if you’re experienced. Thursday the 20th morning and Saturday the 22nd afternoon are solid backup options. The rest is either too small, too windy, or both. Keep an eye on that Thursday 13th swell though – it’s the real deal.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 17°C on Sun morning, min 8°C on Fri night). Winds increasing (calm on Sat morning, fresh winds from the NW by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Tue morning, min 10°C on Tue night). Winds decreasing (fresh winds from the WNW on Wed morning, light winds from the E by Thu afternoon). | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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) | SSE 9 | S 8 | E 8 | E 8 | ENE 8 | ENE 9 | ENE 7 | ENE 9 | ENE 9 | NE 9 | ENE 9 | ENE 9 | S 11 | S 10 | ENE 10 | ENE 10 | SSW 9 | S 10 | S 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 33 | 44 | 34 | 48 | 65 | 161 | 277 | 573 | 404 | 170 | 73 | 71 | 155 | 121 | 61 | 37 | 808 | 709 | 169 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | off | cross-off | cross-off | on | off |
High Tide | 3:39AM0.97m | 4:05PM1.49m | 4:58AM0.98m | 5:10PM1.58m | 6:05AM1.04m | 6:08PM1.67m | 7:01AM1.10m | 7:01PM1.73m | 7:50AM1.17m | 7:50PM1.75m | 8:36AM1.23m | 8:37PM1.72m | |||||||
Low Tide | 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 | 1:23PM0.23m | 2:34AM-0.04m | 2:14PM0.20m | 3:15AM-0.02m | |||||||
 |  | |  |  |  |  |  |  | | | | | | | | | | | |
 | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — |
 | — | — | 5:20 | — | — | 5:21 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — |
mm | — | — | — | — | — | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 16 | 15 | 11 | 17 | 12 | 15 | 16 | 14 | 14 | 19 | 17 | 12 | 18 | 12 | 12 | 16 | 16 | 10 |
Feels °C | 9 | 13 | 11 | 9 | 13 | 10 | 11 | 8 | 6 | 7 | 14 | 12 | 9 | 13 | 5 | 6 | 13 | 13 | 6 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | S 8 | E 8 | E 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | NE 9 | ENE 9 | ENE 9 | S 11 | S 10 | S 9 | ENE 10 | S 9 | S 10 | S 8 |
| kJ | 28 | 44 | 34 | 48 | 65 | 161 | 71 | 573 | 404 | 170 | 73 | 71 | 155 | 121 | 56 | 37 | 335 | 709 | 169 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | S 7 | NE 4 | NE 10 | SSE 8 | E 14 | S 13 | S 13 | E 13 | SW 6 | S 7 | ENE 9 | ENE 10 | ENE 10 | S 8 | ENE 10 | ENE 10 | ENE 10 |
| kJ | 33 | 31 | 15 | 5 | 27 | 6 | 4 | 3 | 3 | 3 | 8 | 14 | 45 | 52 | 61 | 21 | 19 | 19 | 10 |
Swell 3 Height (m) Direction Period (s) | ENE 7 | ENE 7 | SSE 9 | SSE 8 | NE 5 | E 14 | SE 9 | — | — | — | — | — | — | S 14 | — | — | — | — | N 7 |
| kJ | 18 | 16 | 29 | 13 | 4 | 4 | 3 | — | — | — | — | — | — | 4 | — | — | — | — | 1 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 2 | NNW 2 | N 2 | N 3 | ENE 7 | NW 4 | NNW 4 | NW 3 | W 3 | W 3 | NW 3 | NNW 4 | W 3 | SW 4 | SSW 9 | — | WSW 3 |
| kJ | — | — | 1 | 1 | 1 | 4 | 277 | 15 | 27 | 5 | 3 | 2 | 2 | 13 | 7 | 20 | 808 | — | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 51 | 0 | 0 | 0 | 471 | 40 | 52 | 88 | 0 | 0 | 0 | 2 | 183 | 5 | 0 | 79 | 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