Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 9 pm 29 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, 4AM (local time) - 3ft (0.9m), 10s period, SE swell with offshore winds.
  • Most powerful swell: Sunday 6 Sep, 4AM (local time) - 3ft (0.9m), 10s period, S swell with 159 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 4AM (local time) - 3ft (0.9m), 10s period with SE 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 4AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.8m 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 0.9m 10s and forecast to arrive on Sunday (Sep 06) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Saturday (Sep 05) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 30th Aug)3ft (0.9m) 10s
Best Surf 4AM (Sun 30th Aug)3ft (0.9m) 10s
Most Powerful 4AM (Sun 6th Sep)3ft (0.9m) 10s

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


The Lowdown

G’day, Rusty here. Let’s break down what’s coming for Thirroul. The next couple of weeks have a slow start, but a real meaty pulse shows up in the second week that’s got some juice.

The first surf of note is Sunday 30th August morning. We’ve got a clean 3ft south swell, glassy conditions with no wind, and the combined energy is a moderate 223. It’s not huge, but the conditions are perfect for a fun session on the intermediate gear. Water temp is about normal for this time of year. By Sunday afternoon the wind picks up onshore and kills it, so the morning is the move.

Monday and Tuesday are weak. Monday morning has a glassy 3ft swell but the period is short at 8 seconds, so it’s sluggish. Energy is down around 166. Tuesday afternoon has a bit more energy at 256 with a clean cross-off breeze, but the swell is still only 3ft. Surfable but nothing special.

From Wednesday 2nd September through to Monday 8th September, it’s flat and poor. Swell drops to between 1ft and 3ft, with energy mostly below 100. Winds are often clean or offshore, but there’s just no swell to work with. It’s about a week of nothing worth paddling out for. Might interest the kite crowd on some afternoons with clean offshore wind, but for a surfboard, it’s a bust.

Now, Wednesday 9th September morning brings a change. We get 5ft of south swell at 10 seconds, combined energy of 364 (moderate-strong), and glassy conditions. This is a real step up. The swell direction (S) is a good match for the exposed setup here. This is a standout window.

But the big one is Thursday 10th September morning. Swell hits 7ft from the south, with a combined energy of 925 – that’s strong. The wind is dead calm, glassy perfection. This is expert territory – at 7ft, it’s too big for beginners. The period is 10 seconds, so it’s a solid groundswell that’ll hold good shape, though it might close out on the beach breaks. The reef and points should handle it better. Crowds are possible here sometimes, so you’ll likely have company. Thursday afternoon the onshore wind ruins it, and Friday drops off quickly.

The rest of the second week (Saturday 12th September onward) fades back into small, weak, and messy surf with nothing worth chasing.

So, Sunday morning 30th August is a light warm-up, but the real standout is Thursday 10th September morning. That’s the session to plan for.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Wed morning, min 14°C on Thu night). Wind will be generally light.

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
0
2
1
0
1
1
2
1
1
1
1
1
0
0
1
0
1
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
SE
10
0.9
S
9
0.9
S
9
0.9
S
9
0.9
S
8
0.8
S
9
0.9
S
9
0.8
S
11
0.8
S
10
0.7
S
10
0.6
S
10
0.5
S
10
0.6
S
10
0.4
SSE
12
0.5
S
10
0.3
SSE
10
0.5
S
12
0.3
SSE
18
0.6
S
11
Wave Graph
Metric surfscale
Energy kJ
131
129
125
130
105
106
136
146
141
100
74
51
70
46
54
19
70
66
82
Wind (km/h)
5
WNW
0
ESE
10
ESE
5
WNW
5
NNE
15
NE
5
NW
10
NNW
10
NNW
15
NNW
10
NW
15
W
10
NW
15
W
20
W
15
WSW
5
SW
10
ENE
10
NW
Wind State
off
glassy
on
off
glassy
cross-on
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
glassy
cross-on
cross-off
High Tide
9:26AM1.33m
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
Low Tide
3:16AM0.11m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<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
<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
 mm
Temp °C
12
18
16
13
21
19
14
25
26
17
27
27
19
24
23
16
20
19
16
Feels °C
11
16
14
13
18
16
14
20
22
14
23
24
17
20
18
11
17
16
14
  • 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