Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 am 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
17.5°C
0.1° 

Thirroul surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Thirroul surf forecast from 29 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 10AM (local time) - 3ft (0.9m), 9s period, S swell with glassy winds.
  • Most powerful swell: Sunday 30 Aug, 10PM (local time) - 3.5ft (1.0m), 9s period, S swell with 168 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 10AM (local time) - 3ft (0.9m), 9s 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 Sunday (Aug 30) at 10AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Thirroul in the next 16 days are 1.0m 9s and forecast to arrive on Sunday (Aug 30) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Sunday (Sep 06) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sun 30th Aug)3ft (0.9m) 9s
Best Surf10AM (Sun 30th Aug)3ft (0.9m) 9s
Most Powerful10PM (Sun 30th Aug)3.5ft (1.0m) 9s

Table - best surf conditions forecast for Thirroul over the next 16 days.


The Lowdown

G’day, Rusty here. Let’s break down what’s on the cards for Thirroul over the next couple of weeks. It’s a bumpy ride, but there’s a couple of solid windows to keep an eye on.

We start this Sunday, the 30th of August, with a bit of a teaser. Early morning is glassy, with a clean 0.9m south swell at 9 seconds, and the water temp is a normal 64°. The energy is moderate (223), and it looks good. But it’s a short-lived clean spell – the afternoon turns onshore and it’s over.

Monday the 31st has a glassy morning again, with that same 0.9m south swell, but the period drops to 8 seconds. It’s surfable, but just okay. From there, the rest of the week into the weekend is pretty flat and messy – small waves under 3ft, with onshore or cross-shore winds blowing it out. There’s a stretch from Wednesday the 2nd through Saturday the 5th of September where there’s almost nothing worth paddling for.

Now, here’s the big shift. On Sunday the 6th of September in the afternoon, a massive 13ft south swell shows up, but the period is only 10 seconds and the wind is onshore. The energy is extreme (3001), but the quality is cooked. That one is for the kite surfers, not a paddle board.

The real standout is Monday the 7th of September. Both sessions are looking excellent. Morning brings a solid 7ft southeast swell at 9 seconds, and it stays around 7ft in the afternoon. The energy is strong (918 in the morning, 681 in the afternoon). With light winds and clean conditions all day, Thirroul will be cranking. At that size, it’s for intermediate to expert surfers only. Crowds can be a factor here, so get in early. This Monday is your pick of the whole forecast.

After that, it’s back to rough conditions. Tuesday the 8th through Friday the 11th is mostly onshore and choppy, with swell around 3ft to 5ft but poor quality. There’s a bump in size on the weekend of the 12th and 13th, up to 5ft to 6ft, but the wind is messy and the period is short (6-7 seconds), making for weak, crumbly waves.

Then, on Monday the 14th of September, we get another decent morning. Clean conditions with a 6ft northeast swell at 8 seconds, and the energy is solid (549). The afternoon pushes up to 7ft with similar quality. It’s a good option, but Monday the 7th is still the clear winner.

Bottom line: clear your schedule for Monday the 7th of September. The rest is mostly small or blown out, with a couple of other clean but smaller windows.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue morning, min 11°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Wed afternoon, min 12°C on Fri night). Wind will be generally light.

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
2
1
0
1
1
1
1
1
1
1
0
0
1
1
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
S
9
0.9
S
9
1
S
9
0.9
S
8
0.8
S
9
0.8
S
9
0.8
S
11
0.7
S
10
0.7
S
10
0.6
S
10
0.6
S
10
0.5
S
10
0.4
SSE
10
0.5
S
10
0.4
SSE
10
0.4
S
10
0.5
S
8
0.8
S
10
0.6
S
9
1.1
NE
6
0.9
ENE
7
Wave Graph
Metric surfscale
Energy kJ
129
127
168
100
108
106
146
108
100
75
73
48
31
50
31
35
31
133
61
83
88
Wind (km/h)
0
ESE
10
ESE
5
WNW
5
NNE
20
NE
5
NW
15
NNW
10
WNW
15
NW
15
NW
15
WNW
10
W
20
W
20
WSW
15
WSW
10
WNW
10
NE
10
NW
20
N
35
NNW
25
W
Wind State
glassy
on
off
glassy
cross
cross-off
cross-off
off
cross-off
off
off
off
cross-off
cross-off
cross-off
off
cross
off
cross-off
cross-off
cross-off
High Tide
9:30PM1.43m
10:03AM1.38m
10:11PM1.34m
10:43AM1.41m
10:56PM1.23m
11:28AM1.41m
11:50PM1.11m
12:22PM1.41m
00:56AM1.01m
1:27PM1.40m
2:19AM0.94m
2:40PM1.42m
3:46AM0.95m
Low Tide
3:22PM0.25m
3:48AM0.13m
4:08PM0.25m
4:22AM0.18m
4:58PM0.28m
5:01AM0.25m
5:55PM0.31m
5:45AM0.32m
7:04PM0.34m
6:40AM0.40m
8:25PM0.34m
7:50AM0.45m
9:47PM0.30m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
6:16
6:13
6:13
6:11
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:35
5:36
5:37
5:37
5:37
5:38
5:39
 mm
1
Temp °C
18
16
13
20
19
14
26
26
18
26
27
19
23
23
15
22
21
16
29
28
17
Feels °C
16
14
13
17
16
13
22
23
15
21
24
17
18
18
10
19
19
14
25
21
12
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Thirroul:

join our community of surf reporters

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 locationNearest