Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 am 24 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 23 Jul 2026:

  • Best quality surf: Friday 24 Jul, 10PM (local time) - 6ft (1.8m), 14s period, SSE swell with offshore winds.
  • Most powerful swell: Friday 24 Jul, 10PM (local time) - 6ft (1.8m), 14s period, SSE swell with 1,251 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 10AM (local time) - 4ft (1.2m), 8s 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 Friday (Jul 24) at 10AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.4m and 9s. 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 14s and forecast to arrive on Friday (Jul 24) at 10PM. Winds are predicted to be 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 Sunday (Jul 26) at 1AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Fri 24th Jul)4ft (1.2m) 8s
Best Surf10PM (Fri 24th Jul)6ft (1.8m) 14s
Most Powerful10PM (Fri 24th Jul)6ft (1.8m) 14s

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


The Lowdown

G'day, Rusty here. Alright, we've got a bit of a mixed bag on the cards for Thirroul over the next couple of weeks. It's not all doom and gloom, but there's definitely a slow patch to get through before things fire up.

We kick off on Friday morning, the 24th of July, with a clean 4ft south swell. The wind is a light cross-offshore from the southwest, making for a nice, clean lineup. The water temp is about average for this time of year, so nothing out of the ordinary. The energy is moderate (300), and it's a solid start. That afternoon, the wind goes glassy from the east-northeast, and the swell drops to 3ft, but it's from the south-southeast with a longer 12-second period. It's a bit smaller, but glassy conditions make it real tempting for a fun session.

Saturday the 25th picks up again. Morning sees a 4ft south swell with a clean offshore wind from the west-northwest. The energy is solid (390). It's a ripper of a morning. The afternoon cleans up again with glassy conditions and a 4ft south swell (268 energy). Sunday the 26th is a bit of a split day. The morning holds a 5ft south swell (428 energy) with a nice cross-offshore breeze, shaping up well. But the afternoon gets a bit messy with a light cross-onshore wind from the east, making it only marginal.

Then we hit a bit of a lull. From Monday the 27th through to the start of August, the swell drops off and the conditions get ordinary. The combined energy drops to two-digit numbers (63, 48, 46) and the wind turns onshore or cross-shore with chop. There's a few small windows of clean surf, like Monday morning with a glassy 3ft, but it's weak. This flat spell looks like it'll last until the 31st of July.

Friday the 31st of July might be worth a look. The morning brings a solid 4ft south-southeast swell with a 11-second period and glassy conditions. The energy is moderate (361), and it'll be clean. Things get a bit mixed up again over the weekend, but there's a real standout brewing.

The real highlight is further out. On Wednesday the 5th of August, the morning is glassy calm with a 6ft east-southeast swell. The energy is moderate (493), and it's looking clean. But the best of the best, the one to really mark on the calendar, is Thursday the 6th of August. That morning, the swell pumps to 10ft from the southeast with a glassy morning. The combined energy is a massive 1095, which is strong. This is only for the experienced crew – it's a powerful, big swell that will be too much for beginners. The period is 8 seconds, so it's a short-period swell, but with that much energy and glassy wind, it's going to be a session for the brave. That afternoon, the swell holds at 10ft, but the wind turns cross-shore, making it a bit trickier. Friday the 7th of August morning is also a standout with a 6ft northeast swell, morning glass, and 787 energy. The 8th of August Saturday morning is another big one, with a 12ft east-northeast swell (11-second period) and a massive 2974 energy, but it's a week and a half out, so keep an eye on it.

So, for the first week, it's a bit of a grind. The best windows are the mornings from the 24th to the 26th, and then the 31st of July. The big, expert-only swell comes in on the 6th of August. Keep the faith, it'll turn around.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Sat morning, min 7°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Wed morning. Warm (max 20°C on Tue morning, min 10°C on Mon night). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
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
4
2
2
1
2
1
2
1
0
1
1
0
0
0
0
0
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)
1.2
S
8
1.5
S
12
1.8
SSE
12
1.4
S
11
1.1
S
10
1.2
S
11
1.5
S
10
1.2
S
10
1.1
S
10
1
S
9
0.9
S
10
0.7
S
9
0.5
S
8
0.4
SSE
8
0.3
S
8
0.1
S
17
1.5
S
8
1.2
SSE
7
1
SSE
6
1
S
8
0.9
SSE
12
Wave Graph
Metric surfscale
Energy kJ
196
657
1009
441
260
345
470
308
225
175
145
79
34
22
11
7
279
139
85
144
228
Wind (km/h)
10
SW
5
E
15
WNW
10
WNW
0
E
15
WSW
10
WSW
10
E
10
W
0
E
10
ENE
10
NW
10
NW
10
NNW
10
WNW
15
S
15
SSE
15
SSW
10
S
15
SE
10
SSW
Wind State
cross-off
cross-on
off
off
glassy
cross-off
cross-off
on
off
glassy
cross-on
cross-off
cross-off
cross-off
off
cross
cross-on
cross
cross
cross-on
cross
High Tide
4:35PM1.33m
5:17AM0.88m
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
Low Tide
11:37PM0.42m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
rain showers
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:54
6:54
6:54
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:08
5:09
5:10
5:10
5:12
5:13
5:13
 mm
1
1
6
Temp °C
14
14
9
19
18
13
17
16
11
16
16
12
20
20
13
15
15
12
14
14
12
Feels °C
11
11
4
17
16
9
15
14
8
14
14
10
16
16
10
11
11
9
11
11
11
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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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