Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 am 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.7° C
1.3° 

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


Thirroul surf forecast from 24 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 4AM (local time) - 5ft (1.6m), 11s period, S swell with cross-offshore winds.
  • Most powerful swell: Sunday 26 Jul, 7AM (local time) - 5.5ft (1.7m), 11s period, S swell with 669 kJ wave energy.
  • Next surfable swell (1★+): Saturday 25 Jul, 10AM (local time) - 4.5ft (1.4m), 11s 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 25) at 10AM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.2m 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 1.7m 11s and forecast to arrive on Sunday (Jul 26) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 29) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sat 25th Jul)4.5ft (1.4m) 11s
Best Surf 4AM (Sun 26th Jul)5ft (1.6m) 11s
Most Powerful 7AM (Sun 26th Jul)5.5ft (1.7m) 11s

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


The Lowdown

Alright folks, Rusty here with a look at the next couple of weeks for Thirroul. We've got a bit of a mixed bag on the horizon, but there are definitely some sessions to get excited about if you pick your moments.

The water temperature is sitting at 66°, which is a touch warmer than normal for this time of year, so that’s a nice little bonus for your first duck dive.

We start off this weekend with some proper surf. Saturday the 25th is looking clean with a S swell running about 5ft. The morning has light offshore winds making for some fun, peelable waves. The wave energy is moderate (449) and that 11-second period will give the waves a bit of push. Saturday afternoon glassed off, dropping to 4ft, which will be a nice, easy session for a sunset paddle.

Sunday the 26th is where it gets a bit more serious. The morning session sees the swell jump to a solid 6ft from the south, with moderate energy (649) and a 10-second period. We’ve got a light cross-off breeze keeping things clean. This is likely the best wave of the weekend, with some good power behind it. The afternoon turns onshore and messy, so get on it early.

The start of the week has a bit of a lull. Monday the 27th morning you can still find a knee-to-waist high wave at 3ft, but the energy drops off hard. From Monday afternoon through to the end of the month, the surf gets small and pretty ordinary. For the rest of July, we’re looking at small, choppy conditions or just straight up flat spells. There might be a brief spike Wednesday the 29th afternoon with a 5ft S swell, but it’s accompanied by a messy cross-onshore wind that will chop it up. Not worth paddling out for. We get a bit of a window August 1st morning with a tiny 2ft glassy wave, but it's really just a paddle.

Now, here is the standout of the whole run.

We have to look ahead to Monday the 3rd of August. This is the one. Monday morning is a little ripper. We’ve got a solid 6ft SSE swell pumping in, the energy is up there (652) and it’s glassy as a lake with zero wind. This is clean, punchy, powerful surf. It will be a bit on the fuller side for beach breaks with that short period (7 seconds), but the power will be there. This is the best on offer by a long shot.

Tuesday the 4th continues the run. The morning sees a clean 5ft from the ESE with a light cross-off breeze, and then Tuesday afternoon is absolutely magical. It goes glassy again with 6ft of E swell and the wave energy is right up there (846). The period is short at 8 seconds, so the waves will be a bit dumpy, but that combination of size and glassy conditions is a rare treat. The 5th of August morning looks a bit lumpy but the afternoon glass-off looks good for 5ft.

After that, the first week of August maintains some decent, clean waves in the 3ft to 5ft range, but the consistency fades and the energy drops. Friday the 7th has a beautiful glassy afternoon with a 5ft E groundswell (11 seconds) that will be a joy to ride, especially on a point or reef if you can find one. The energy is strong (619). Saturday the 8th morning looks okay before rain moves in.

The second week looks leaner. Sunday the 9th sees a spike of swell from the east with a good 12-second period, but the winds are howling offshore at 25 km/h. That will make for a bumpy, blown-out surface, so it’s a pass. The last week of the forecast is pretty quiet overall.

So, to sum it up: hit Saturday and Sunday this weekend for clean waves. If you can wait, mark Monday the 3rd and Tuesday the 4th of August on your calendar. Those are the golden sessions. The rest of the time is small or messy.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sat morning, min 10°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light.

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
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
2
2
3
1
2
1
0
1
0
0
0
0
0
0
0
0
1
0
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)
1.4
S
11
1.1
S
10
1.3
S
11
1.7
S
11
1.4
S
10
1.1
S
9
1
S
9
0.9
SSE
8
0.6
S
8
0.4
S
9
0.3
S
9
0.3
S
8
0.2
S
9
1.6
S
9
1.2
S
7
1.4
S
6
1.1
S
7
1
SSE
8
1
SSE
9
1
SSE
9
0.9
SSE
9
Wave Graph
Metric surfscale
Energy kJ
441
270
410
646
400
207
151
115
43
24
13
11
7
386
130
166
113
133
166
162
111
Wind (km/h)
10
W
5
W
10
WSW
10
WSW
10
ESE
10
WSW
5
NNW
20
NE
10
WNW
20
W
10
W
10
NW
25
WSW
15
SSE
20
SW
15
SSW
15
SSE
10
WSW
5
SSW
15
SSE
10
WSW
Wind State
off
glassy
cross-off
cross-off
on
cross-off
cross-off
cross
off
off
off
off
cross-off
cross-on
cross-off
cross
cross-on
cross-off
cross
cross-on
cross-off
High Tide
5:25PM1.37m
6:11AM0.91m
6:11PM1.42m
6:56AM0.95m
6:53PM1.48m
7:36AM0.99m
7:32PM1.52m
8:13AM1.04m
8:08PM1.55m
8:49AM1.08m
8:44PM1.56m
9:25AM1.12m
9:19PM1.53m
Low Tide
10:35AM0.49m
00:25AM0.36m
11:28AM0.47m
1:07AM0.30m
12:15PM0.43m
1:45AM0.24m
12:58PM0.40m
2:20AM0.20m
1:39PM0.36m
2:54AM0.16m
2:18PM0.34m
3:26AM0.14m
2:57PM0.34m
3:57AM0.13m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:54
6:54
6:52
6:52
6:50
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:09
5:10
5:10
5:12
5:13
5:13
5:14
 mm
Temp °C
19
19
12
16
15
12
17
16
14
19
20
13
15
14
11
14
13
11
15
14
10
Feels °C
16
17
8
13
13
11
14
12
12
14
16
8
9
9
5
9
8
7
11
10
7
  • Map Icons:
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  • 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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