Surf Forecasts:
Thirroul surf forecast from 29 Jul 2026:
- Best quality surf: Thursday 30 Jul, 10PM (local time) - 6ft (1.9m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 30 Jul, 7PM (local time) - 7ft (2.2m), 11s period, S swell with 1,109 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 10PM (local time) - 6ft (1.9m), 10s 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 (Jul 30) at 10PM. The primary swell is predicted to be 1.9m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 2.2m 11s and forecast to arrive on Thursday (Jul 30) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Aug 02) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 30th Jul) | 6ft (1.9m) 10s |
| Best Surf | 10PM (Thu 30th Jul) | 6ft (1.9m) 10s |
| Most Powerful | 7PM (Thu 30th Jul) | 7ft (2.2m) 11s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s break down what’s coming for Thirroul over the next 16-odd days.
We’ve got a slow start. Thursday 30 July morning kicks off with 5ft south swell, 9-second period, weak energy (333), and a light cross-shore breeze. It’s marginal. Water temp is 66°, a touch warmer than usual.
The first real standout hits Saturday 1 August afternoon – glassy conditions, a 4ft SSE swell, 9-second period, and moderate energy (507). Clean, small, and fun.
Sunday 2 August morning brings a clean offshore wind from the NNW, 5ft SE groundswell, 12-second period, and moderate energy (762). That’s long-period, quality stuff for the reef.
Wednesday 5 August afternoon is another glassy one – 5ft S swell, 10-second period, moderate energy (503). A solid afternoon session.
Into the second week, Sunday 9 August morning is glassy again with 6ft SSE swell, 10-second period, and solid energy (589). Clean and inviting.
Monday 10 August morning is the real highlight – light offshore NNW wind, 6ft SE groundswell, 11-second period, and strong energy (836). That’s the session to pencil in.
Friday 14 August morning is for the experienced – offshore W wind, 7ft S swell, but only 8-second period, and strong energy (1113). Clean, but at that size, only for those with the skills.
There are gaps, especially from Tuesday 4 August afternoon through to Saturday 8 August – mostly poor or small conditions. But the good run from Saturday 1 August afternoon through Monday 10 August morning makes up for it. The Monday 10 August session is the best on offer.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat morning. Very mild (max 15°C on Fri morning, min 9°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon morning, min 10°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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) | S 9 | S 11 | S 10 | S 10 | S 10 | S 9 | SSE 9 | SSE 9 | SSE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 10 | SE 12 | SE 13 | S 9 | S 10 | S 10 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 328 | 524 | 666 | 479 | 715 | 484 | 351 | 286 | 625 | 747 | 604 | 308 | 187 | 110 | 37 | 34 | 30 | 145 | 363 | 480 | 341 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross | cross-on | cross-off | cross | glassy | off | cross-off | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off |
High Tide | 8:44PM1.56m | 9:25AM1.12m | 9:19PM1.53m | 10:01AM1.17m | 9:54PM1.48m | 10:38AM1.21m | 10:31PM1.41m | 11:18AM1.25m | 11:13PM1.31m | 12:03PM1.29m | 00:01AM1.20m | 12:53PM1.32m | 1:01AM1.09m | ||||||||
Low Tide | 2:18PM0.34m | 3:26AM0.14m | 2:57PM0.34m | 3:57AM0.13m | 3:38PM0.35m | 4:29AM0.14m | 4:22PM0.36m | 5:02AM0.16m | 5:11PM0.39m | 5:38AM0.20m | 6:07PM0.41m | 6:19AM0.25m | 7:13PM0.42m | ||||||||
 | |  | | | |  | | | | | |  | | | | | | | | | |
 | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — |
 | — | 5:13 | — | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — |
mm | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 10 | 15 | 14 | 11 | 13 | 14 | 12 | 18 | 17 | 13 | 21 | 20 | 12 | 16 | 13 | 11 | 16 | 16 | 10 |
Feels °C | 10 | 9 | 6 | 11 | 10 | 8 | 11 | 14 | 10 | 14 | 12 | 11 | 15 | 15 | 8 | 10 | 7 | 5 | 13 | 13 | 6 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 11 | S 10 | S 10 | S 10 | S 9 | SSE 9 | SSE 9 | SSE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 10 | S 7 | S 6 | S 9 | S 10 | S 10 | S 9 |
| kJ | 328 | 524 | 666 | 479 | 539 | 484 | 351 | 286 | 625 | 747 | 604 | 308 | 187 | 110 | 37 | 25 | 30 | 145 | 363 | 480 | 341 |
Swell 2 Height (m) Direction Period (s) | NE 6 | NE 6 | — | NE 7 | NE 7 | NE 7 | NE 8 | SSE 12 | SE 14 | E 18 | E 17 | NE 5 | NE 5 | NE 5 | NE 5 | SE 12 | SE 13 | S 10 | E 13 | ENE 13 | ENE 9 |
| kJ | 2 | 1 | — | 2 | 2 | 2 | 2 | 93 | 248 | 6 | 6 | 16 | 9 | 7 | 1 | 34 | 26 | 75 | 3 | 17 | 8 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | — | E 13 | — | E 12 | E 14 | SE 14 | NE 7 | S 21 | E 17 | E 16 | E 16 | E 16 | E 15 | ESE 7 | S 11 | ENE 13 | E 9 | E 18 | E 18 |
| kJ | 3 | 3 | — | 3 | — | 3 | 4 | 128 | 2 | 9 | 6 | 5 | 5 | 5 | 4 | 5 | 22 | 18 | 2 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | — | S 9 | — | — | S 10 | — | — | — | NE 3 | NNW 3 | NE 4 | NNW 3 | NW 3 | WNW 3 | SW 3 | W 3 | — | W 3 | — | — | — |
| kJ | — | 389 | — | — | 715 | — | — | — | 6 | 3 | 12 | 1 | 4 | 2 | 5 | 5 | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 67 | 0 | 5 | 86 | 0 | 5 | 0 | 0 | 0 | 102 | 0 | 2 | 0 | 0 | 5 | 2 | 2 | 0 | 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)
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