Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 9 am 28 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 28 Jul 2026:

  • Best quality surf: Thursday 30 Jul, 10PM (local time) - 5.5ft (1.7m), 11s period, S swell with cross-offshore winds.
  • Most powerful swell: Friday 31 Jul, 1AM (local time) - 6ft (1.8m), 10s period, S swell with 709 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 4AM (local time) - 4.5ft (1.3m), 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 Thursday (Jul 30) at 4AM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.2m and 7s. 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 1.8m 10s and forecast to arrive on Friday (Jul 31) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Jul 29) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Thu 30th Jul)4.5ft (1.3m) 11s
Best Surf10PM (Thu 30th Jul)5.5ft (1.7m) 11s
Most Powerful 1AM (Fri 31st Jul)6ft (1.8m) 10s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what's on the menu for the next couple of weeks at Thirroul.

It's a bit of a slow start, but we've got a couple of really nice windows opening up. Don't get too excited about the first few days; we're looking at flat or close to flat conditions right through Tuesday and Wednesday. You'll be waiting until Thursday the 30th for anything to ride, and even then, it's a small one.

On Thursday the 30th of July, the morning's your best bet. We've got a clean 2ft swell from the S with a light cross-offshore breeze. The wave energy is moderate (325), but it's nothing to go crazy over. The water temp is sitting at 66°, which is a touch warmer than average for this time of year.

Friday the 31st starts clean with a 5ft S swell, period around 10 seconds, and light cross-shore winds. The energy is ramping up (505), but the wind goes onshore in the arvo, so make it a dawn patrol.

The real standout in this whole outlook is the morning of Sunday the 2nd of August. We've got a solid 5ft swell from the SSE with a very long period of 12 seconds. That's proper groundswell, packing a lot of punch – the combined energy is a solid 718. The wind is a light offshore from the NNW, keeping it glassy and clean. This is the one to circle on the calendar. Given the long period, Thirroul's reef and sand setup should handle it nicely. The afternoon holds up well too, with a 4ft SSE swell and cross-offshore winds.

There's a big gap next week with a lot of wind and lumpy, messy conditions. Most of it is blown out, with a big pulse of 10ft SSE swell on the 4th and 5th of August, but with strong cross-shore winds. That's big, messy, and not great for a paddle. Honestly, that setup looks more interesting for kite surfing than paddle surfing. It's too big for beginners and only really for the experts if they're keen on a battle with the chop.

We get another clean-up on the morning of Friday the 7th of August. Glassy conditions with a 6ft ESE swell (energy 414). It's a bit short-period at 8 seconds, but clean as a whistle.

Then, looking further ahead to Tuesday the 11th of August, another promising morning. A 5ft ENE swell, period lifting to 11 seconds, and a light offshore breeze from the NNW. The energy is strong (601), and the forecast is for very good surf. This is a long-range call, so it's promising but less certain. The Wednesday morning on the 12th also looks clean with a 5ft ENE swell.

So, there you go. A slow start, but with a couple of real gems to chase. Keep an eye on that Sunday the 2nd and Tuesday the 11th mornings.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue afternoon, min 6°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Sun morning, min 10°C on Fri night). Wind will be generally light.

Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
1
0
3
2
0
2
2
2
3
2
2
2
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)
0.4
S
8
0.3
S
9
0.2
S
8
0.1
SE
13
0.1
SE
13
0.5
S
12
1.3
S
9
1.4
S
11
1.8
S
10
1.7
S
10
1.7
S
10
1.5
S
10
1.4
SSE
9
1.3
SSE
10
1.3
SSE
12
1.3
SSE
11
1.2
SSE
11
1
SE
11
0.9
SE
11
0.7
SE
11
0.5
SE
10
Wave Graph
Metric surfscale
Energy kJ
18
14
8
7
7
71
252
483
709
586
539
423
314
295
491
372
317
242
169
115
51
Wind (km/h)
10
WNW
5
NNW
10
NW
20
WSW
25
WSW
15
WSW
5
SSW
10
SE
10
W
10
S
15
SSE
10
SW
5
SSW
5
E
10
NW
10
NW
5
WNW
10
WSW
15
SSW
15
SSE
10
SSW
Wind State
off
glassy
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-off
cross-on
cross-on
cross-off
glassy
glassy
off
cross-off
off
cross-off
cross
cross-on
cross
High Tide
7:32PM1.52m
8:13AM1.04m
8:08PM1.55m
8:49AM1.08m
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
Low Tide
12:58PM0.40m
2:20AM0.20m
1:39PM0.36m
2:54AM0.16m
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
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:50
6:50
6:50
6:48
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:12
5:13
5:13
5:14
5:15
5:15
5:15
 mm
2
3
Temp °C
19
20
12
16
15
10
14
14
10
14
14
11
14
14
12
21
21
13
16
15
12
Feels °C
15
17
9
8
8
4
10
10
7
10
10
9
13
13
10
17
18
10
12
12
10
  • 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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