Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 9 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.5° 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 20 Jul 2026:

  • Best quality surf: Monday 20 Jul, 7PM (local time) - 5ft (1.6m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 20 Jul, 7PM (local time) - 5ft (1.6m), 11s period, ENE swell with 586 kJ wave energy.
  • Next surfable swell (1★+): Monday 20 Jul, 7PM (local time) - 5ft (1.6m), 11s period with ENE 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 Monday (Jul 20) at 7PM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.6m and 11s. Another secondary swell of 0.7m and 4s is also forecast. 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 1.6m 11s and forecast to arrive on Monday (Jul 20) at 7PM. 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 4s period and expected on Monday (Jul 20) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Mon 20th Jul)5ft (1.6m) 11s
Best Surf 7PM (Mon 20th Jul)5ft (1.6m) 11s
Most Powerful 7PM (Mon 20th Jul)5ft (1.6m) 11s

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


The Lowdown

G'day, Rusty here. The next couple of weeks at Thirroul start off with a bit of clean, moderate ENE swell, but the real firecracker is waiting in the first week of August. The water temp is sitting at 65.3°, a touch warmer than normal for this time of year, so you might not need the thickest rubber.

Let's kick off Monday the 20th of July. Morning session brings a 5.2ft ENE swell with a 11-second period and a light cross-off breeze from the NW. Combined energy is moderate at 723, and the conditions are clean. It's a solid start – expect very good surf. The afternoon turns a bit messy with a cross-shore wind, so get it early.

Tuesday the 21st stays similar: 4.3ft ENE in the morning, clean with a light cross-off, but the swell's a touch smaller. Wednesday the 22nd offers a 3.3ft ENE swell with a glassy offshore wind from the west – clean but small. Thursday the 23rd drops off to 2.3ft and the wind picks up, not worth a paddle.

Then Friday the 24th brings a glassy morning with a 5.2ft S swell – period 9 seconds, combined energy 420. The wind is dead calm, so it'll be clean. Saturday the 25th serves up 3.6ft S swell with glassy conditions again in the afternoon. Sunday the 26th is mediocre with a cross-on breeze.

The following week starts with a few clean mornings on the 27th and 28th, but nothing special. Wednesday the 29th gets ugly with strong cross-onshore winds and a long-period SSE swell – big energy but messy. Thursday the 30th and Friday the

Short Range Forecast

Mostly dry. Warm (max 20°C on Wed morning, min 10°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Sat morning, min 6°C on Thu night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
2
2
1
2
2
1
1
0
0
1
2
2
2
2
2
1
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
ENE
11
1.6
ENE
11
1.4
ENE
10
1.3
ENE
10
1.2
ENE
10
1.1
ENE
10
1
ENE
10
1
ENE
10
0.9
ENE
10
0.7
ENE
9
0.7
ENE
9
1.5
S
8
1.6
S
9
1.3
S
10
1.3
SSE
13
1.1
S
11
1.1
S
11
1.3
S
12
1.2
S
10
1.1
S
10
1.2
S
9
Wave Graph
Metric surfscale
Energy kJ
561
572
419
331
286
235
179
175
129
73
71
273
386
320
554
289
311
456
296
235
256
Wind (km/h)
10
NW
15
NNE
10
NW
10
NNW
15
NE
10
NW
10
W
10
WSW
10
W
20
WSW
25
W
15
WSW
5
W
10
NW
20
W
15
WSW
5
W
20
WSW
15
SW
10
SSE
10
W
Wind State
cross-off
cross
cross-off
cross-off
cross
cross-off
off
cross-off
off
cross-off
cross-off
cross-off
glassy
cross-off
cross-off
cross-off
glassy
cross-off
cross-off
cross-on
off
High Tide
1:01PM1.26m
00:57AM1.14m
1:53PM1.27m
1:54AM1.01m
2:46PM1.28m
3:00AM0.92m
3:41PM1.30m
4:12AM0.87m
4:35PM1.33m
5:17AM0.88m
5:25PM1.37m
6:11AM0.91m
6:11PM1.42m
Low Tide
7:05PM0.46m
7:14AM0.31m
8:15PM0.49m
7:57AM0.39m
9:28PM0.50m
8:45AM0.45m
10:38PM0.47m
9:39AM0.49m
11:37PM0.42m
10:35AM0.49m
00:25AM0.36m
11:28AM0.47m
1:07AM0.30m
clear
clear
clear
clear
clear
clear
cloud
cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:56
6:56
6:56
6:56
6:54
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:07
5:07
5:07
5:08
5:08
5:09
5:10
 mm
Temp °C
17
17
12
18
17
13
20
19
14
17
16
9
14
16
10
19
18
13
18
16
11
Feels °C
14
14
11
15
14
11
18
16
11
11
10
3
11
12
5
16
16
9
14
13
8
  • 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