Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 9 am 26 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 26 Jul 2026:

  • Best quality surf: Thursday 30 Jul, 1AM (local time) - 10ft (3.0m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Thursday 30 Jul, 1PM (local time) - 10ft (3.0m), 11s period, S swell with 2,177 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 7PM (local time) - 4ft (1.2m), 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 Sunday (Jul 26) at 7PM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.1m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Thirroul in the next 16 days are 3.0m 11s and forecast to arrive on Thursday (Jul 30) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Wednesday (Jul 29) at 1PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Sun 26th Jul)4ft (1.2m) 10s
Best Surf 1AM (Thu 30th Jul)10ft (3.0m) 10s
Most Powerful 1PM (Thu 30th Jul)10ft (3.0m) 11s

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


The Lowdown

G’day, Rusty here. Let’s have a look at what’s on the table for Thirroul.

We’ve got a slow start, with nothing worthwhile for the first couple of days. The first real chance to paddle out comes Sunday the 26th morning. That’s where we’ll kick off.

Sunday morning the 26th, Thirroul is showing a 5ft south swell with an 11-second period. The energy is moderate (598) and the water temp is 66°, which is a touch warmer than normal for this time of year. Wind is light from the SW, coming cross-off, so the surface is clean – looking like very good surf. Crowds can be a factor here sometimes, but it’s worth it. This is the standout session of the first week, no question.

Sunday afternoon goes onshore with the ESE breeze, and the swell drops to 4ft – not worth hanging around for. Monday morning the 27th turns glassy with a north breeze and a smaller 3ft south swell (172 energy). It’s surfable but ordinary. Monday afternoon gets bumped up by a NE breeze and messy conditions. Tuesday the 28th we bottom out with tiny 1–1.0ft swell and barely any energy – not worth a second look.

Wednesday the 29th is a write-off with only 0.3ft of swell. Thursday the 30th morning, we see a jump to 8ft south swell with 11 seconds, but the energy is strong (2802) and the wind is cross-shore from the SSW – it’s marginal. That 8ft is getting big, more for experienced surfers, and the cross-shore wind keeps it from being clean. Friday the 31st holds similar 8ft south swell but with cross and cross-on winds – still a bit of a mess.

Saturday the 1st of August drops to 5ft south-southeast swell, light cross-shore wind, energy moderate (663). It’s a marginal call. Sunday the 2nd morning has a clean 5ft south-east swell with light NNW cross-off wind – that’s a solid option, good for a Sunday session.

Monday the 3rd morning is clean but tiny at 3ft, afternoon picks up a bit with 3ft and clean cross-off wind. Worth a look if you’re desperate. Tuesday the 4th is small and fading.

Wednesday the 5th morning turns glassy with no wind and a 2ft short-period swell (8 sec) – not much energy (88), but it’s clean and surfable. Thursday the 6th morning sees a shift: 6ft south swell with 8-second period and a light W offshore wind – energy moderate (414), clean and punchy. That’s a decent little window for the keen ones.

Friday the 7th goes glassy again with 3ft – but it’s short-period, so nothing exciting. Saturday the 8th morning builds to 6ft south swell but with light cross-on wind – marginal. Saturday afternoon jumps to 12ft south swell but the ENE wind makes it messy – too big for intermediates anyway. Sunday the 9th morning shapes up well: 7ft south swell, short-period (7 sec), but with a light north cross-off wind, clean. Energy moderate (524). A good session if you’re in the water early.

Now for the real standout of the whole outlook: Monday the 10th of August morning. Thirroul gets a 13ft east-southeast swell with an 11-second period – that’s serious energy (4080) and very powerful. The wind is light from the NW, cross-off and clean. This is excellent surf but it’s for experienced surfers only – 13ft is no joke. The period around 11 seconds is solid groundswell, bringing good shape. If you’ve got the skills, this is the one to circle. Monday afternoon drops slightly to 12ft but the cross-shore wind from the NNE makes it a bit lumpy.

Overall, Sunday the 26th morning is the cleanest early call, and Monday the 10th morning is the big one – big swell, clean, and powerful. Get it while it’s good.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue afternoon, min 10°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 15°C on Wed morning, min 6°C on Wed night). Wind will be generally light.

Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
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
1
0
1
0
0
0
0
0
4
3
1
4
2
1
3
2
2
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
S
11
1.3
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
0.2
S
8
0.1
SE
13
0.1
S
16
3
S
10
2.5
S
11
2.5
S
11
2.5
S
10
2.5
S
10
2.4
S
10
1.8
SSE
9
1.5
SSE
10
1.7
SSE
11
1.4
SE
11
Wave Graph
Metric surfscale
Energy kJ
595
353
212
158
118
42
24
14
8
7
7
1527
1732
1439
1495
1281
1057
551
411
669
476
Wind (km/h)
10
SW
10
ESE
10
W
5
N
20
NE
10
NW
10
W
5
NW
15
NNW
25
W
20
WSW
15
W
15
SSW
20
SSE
10
WSW
15
SSW
15
S
10
SW
10
SSW
10
ESE
10
WNW
Wind State
cross-off
on
cross-off
glassy
cross
off
off
glassy
cross-off
off
cross-off
cross-off
cross
cross-on
cross-off
cross
cross-on
cross-off
cross
on
off
High Tide
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
10:01AM1.17m
9:54PM1.48m
Low Tide
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
3:38PM0.35m
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:54
6:52
6:52
6:50
6:50
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:10
5:10
5:12
5:13
5:13
5:14
5:15
 mm
Temp °C
16
16
12
16
16
13
19
20
12
15
15
8
14
14
10
14
14
11
15
15
12
Feels °C
14
14
10
13
13
12
15
17
8
7
9
3
8
8
6
9
10
8
12
13
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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