Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.6° C
1.1° 

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


Thirroul surf forecast from 29 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 TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 30th Jul)6ft (1.9m) 10s
Best Surf10PM (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 Forecast

Light 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 Summary

Mostly 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
Rating
(10 max)
1
0
3
1
1
2
1
3
3
3
1
2
1
1
1
0
0
1
2
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
S
9
1.5
S
11
1.8
S
10
1.6
S
10
2
S
10
1.7
S
9
1.5
SSE
9
1.3
SSE
9
1.5
SSE
12
1.6
SE
12
1.5
SE
12
1.1
SE
11
0.9
SE
11
0.7
SE
11
0.4
SE
10
0.4
SE
12
0.3
SE
13
1
S
9
1.4
S
10
1.6
S
10
1.4
S
9
Wave Graph
Metric surfscale
Energy 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)
10
S
15
SSE
10
W
10
S
20
SSE
10
SW
10
S
5
SE
10
NW
15
NNW
25
NE
10
NW
20
NW
15
W
20
WNW
25
WSW
25
W
20
W
15
WSW
5
ESE
10
W
Wind State
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
clear
clear
clear
clear
clear
clear
rain showers
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:50
6:48
6:48
6:47
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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