Surf Forecasts:
Thirroul surf forecast from 4 Jul 2026:
- Best quality surf: Sunday 5 Jul, 1AM (local time) - 7ft (2.1m), 11s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 7 Jul, 1PM (local time) - 10ft (3.0m), 11s period, SE swell with 2,683 kJ wave energy.
- Next surfable swell (1★+): Saturday 4 Jul, 10PM (local time) - 3ft (0.9m), 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 (Jul 04) at 10PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.5m and 12s. 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 3.0m 11s and forecast to arrive on Tuesday (Jul 07) at 1PM. 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 Saturday (Jul 11) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 4th Jul) | 3ft (0.9m) 8s |
| Best Surf | 1AM (Sun 5th Jul) | 7ft (2.1m) 11s |
| Most Powerful | 1PM (Tue 7th Jul) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
Updates in hr min s Forecast update imminent
Alright mate, Rusty here, convertin’ it all to feet and miles per hour for ya.
Thirroul’s lookin’ at a rough start, no doubt. Saturday the 4th of July has just 1ft of S swell with a weak 8-second period and a cross-on breeze from the SE. Wave energy is weak at 116. The water is 66°F, which is a couple degrees warmer than normal, but the surf is just poor.
Sunday the 5th jumps to 11-12ft of S/SSE swell, solid 11-12 second periods, but the wind is cross and cross-on at 12-19 mph. Energy is massive (4110 to 2441), but it’s all chop and lump. Monday the 6th and Tuesday the 7th keep that big 8-10ft swell with strong energy (over 1000), but there’s no clean wind. It’s a kite-surfing setup more than paddle.
Wednesday the 8th to Friday the 10th, swell drops to 5-8ft, periods sit at 9-10 seconds, energy in the 500-1500 range (moderate), but the breeze stays cross or cross-on.
Now, Saturday the 11th of July, we finally get a break. Light cross-off wind from the NW, swell drops to 4ft from the SE with a 9-second period, energy around 250-300. It’s weak, but it’s clean. Sunday the 12th is even sweeter – offshore wind from the WNW at 12 mph, 3-4ft swell from the ESE/E, 10-second period. That’ll be clean and fun.
We flatline Monday the 13th and Tuesday the 14th – 1-2ft junk, energy as low as 24.
Wednesday the 15th brings a big one again – 11ft from the SSE, 10-second period, energy 2282 (strong). Wind is a light cross. It’s big, so experts only.
Then, Sunday the 19th of July – the real prize. 5ft of ESE swell with a long 13-second period, light offshore wind from the WNW. Energy is 799, and the forecast says *expect very good surf conditions*. Clean, glassy, proper groundswell. Get on it early, because Thirroul can get crowded.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 16°C on Sat afternoon, min 11°C on Sat night). Winds increasing (light winds from the SSW on Sat afternoon, fresh winds from the S by Sun afternoon). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue afternoon. Very mild (max 16°C on Fri morning, min 10°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sat 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | S 8 | S 11 | S 11 | SSE 12 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 108 | 1068 | 2549 | 2434 | 1440 | 1077 | 1058 | 1412 | 1977 | 2551 | 2150 | 1473 | 1146 | 743 | 609 | 566 | 430 | 437 | 557 | 459 | 294 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-off | cross | cross-on | cross | cross-on | on | off | cross-off |
High Tide | 10:58PM1.42m | 11:57AM1.11m | 11:39PM1.34m | 12:44PM1.16m | 00:26AM1.26m | 1:34PM1.23m | 1:22AM1.17m | 2:29PM1.31m | 2:30AM1.09m | 3:26PM1.40m | 3:45AM1.05m | 4:24PM1.50m | 5:00AM1.03m | ||||||||
Low Tide | 4:39PM0.45m | 5:44AM0.19m | 5:29PM0.48m | 6:21AM0.20m | 6:26PM0.50m | 7:02AM0.22m | 7:32PM0.50m | 7:48AM0.25m | 8:46PM0.46m | 8:41AM0.28m | 10:01PM0.38m | 9:39AM0.30m | 11:11PM0.27m | 10:39AM0.31m | |||||||
 |  |  |  |  | |  | | | |  | | |  | | | | | | | | |
 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 |
 | 4:58 | — | — | 4:58 | — | — | 4:59 | — | — | 4:59 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | 5:00 |
mm | — | — | — | 1 | 4 | 1 | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 13 | 13 | 14 | 13 | 15 | 14 | 13 | 14 | 14 | 13 | 15 | 15 | 11 | 15 | 15 | 14 | 16 | 15 | 12 | 16 |
Feels °C | 14 | 6 | 7 | 8 | 7 | 10 | 9 | 9 | 10 | 9 | 9 | 11 | 11 | 8 | 13 | 12 | 12 | 14 | 13 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 11 | S 11 | ENE 8 | E 13 | E 13 | E 16 | SSE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 9 |
| kJ | 108 | 363 | 1553 | 7 | 3 | 4 | 5 | 1172 | 1422 | 2005 | 1806 | 1473 | 1146 | 743 | 609 | 566 | 430 | 437 | 557 | 459 | 294 |
Swell 2 Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | — | — | E 16 | E 16 | — | — | — | S 10 | ESE 14 | ESE 12 | ESE 11 | ESE 10 | — | S 8 | SE 14 | S 15 | S 18 | E 15 |
| kJ | 5 | 5 | 6 | — | — | 5 | 5 | — | — | — | 47 | 195 | 339 | 260 | 135 | — | 12 | 149 | 4 | 6 | 4 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 8 | E 11 | — | — | — | E 13 | — | — | — | S 15 | — | — | — | S 18 | S 16 | S 20 | S 15 | — | — | E 15 |
| kJ | 3 | 1 | 2 | — | — | — | 3 | — | — | — | 18 | — | — | — | 6 | 5 | 8 | 4 | — | — | 4 |
Wind waves Height (m) Direction Period (s) | — | S 11 | S 11 | SSE 12 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SE 11 | SE 11 | — | — | — | — | — | — | — | — | — | WSW 4 |
| kJ | — | 1068 | 2549 | 2434 | 1440 | 1077 | 1058 | 1412 | 1977 | 2551 | 2150 | — | — | — | — | — | — | — | — | — | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 0 | 5 | 316 | 183 | 118 | 48 | 5 | 5 | 11 | 11 | 5 | 48 | 0 | 2 | 5 | 2 | 5 | 36 | 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