Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 9 pm 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.2° C
0.6° 

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


Thirroul surf forecast from 12 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 7AM (local time) - 5.5ft (1.7m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Wednesday 15 Jul, 7AM (local time) - 5.5ft (1.7m), 10s period, S swell with 561 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 4AM (local time) - 4.5ft (1.3m), 7s 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 Wednesday (Jul 15) at 4AM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.7m and 6s. Another secondary swell of 0.6m and 10s 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 1.7m 10s and forecast to arrive on Wednesday (Jul 15) 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 0.7m 5s period and expected on Wednesday (Jul 15) at 1AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Wed 15th Jul)4.5ft (1.3m) 7s
Best Surf 7AM (Wed 15th Jul)5.5ft (1.7m) 10s
Most Powerful 7AM (Wed 15th Jul)5.5ft (1.7m) 10s

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


Alright folks, Rusty here. Let’s have a look at what’s in store for Thirroul over the next couple of weeks.

Honestly, we’re starting off with a pretty flat spell. There’s a lot of nothing on offer for the first week, with barely a wave to get excited about. The first few days are a write-off, with tiny swell and no energy. We’re looking at a gap of several days with no real recommendation until Wednesday the 15th.

That Wednesday the 15th brings a bit of a pulse, with swell building to about 6ft from the S, but the period is a short 10 seconds and there is moderate wave energy (550). It’s a beach and reef setup and the wind is cross-shore, so it’s not ideal. This is more for the keen ones who don’t mind a bit of chop. The swell drops a little through the afternoon and the cross-on wind kills it. Not a standout.

Thursday the 16th holds similar size, around 6ft from the S again, but the period is still short at 8 seconds and the energy is strong (660). Winds are cross-shore and a bit stronger, so expect some cross-chop. This is really for experienced surfers only, as it’s a bit of a washing machine. Beginners should stay out.

Friday the 17th and the weekend fade out quickly. Swell drops below 3ft, periods get short and weak, and winds are not helpful. Not worth paddling out for.

Now, here’s where it gets interesting. After a long quiet run, Monday the 20th finally shows some promise. The swell is a modest 4ft from the ENE, with a period of 9 seconds and moderate energy (282). The wind is light cross-offshore from the NNW, keeping the surface clean. This is the pick of the first week. The break can be inconsistent, but when it lines up, there’ll be some fun little runners. Expect it to be a bit crowded though, as it’s sometimes busy.

Looking further ahead to Sunday the 26th, we’ve got another little window. Swell is a touch smaller at 3ft from the E, but the period stretches out to 12 seconds – that’s groundswell energy and it shows in the energy reading (201). The wind goes glassy in the morning, which is rare and very welcome. This is a solid option for a clean, mellow session, especially if you’re after some long walls. The longer period means better shaped waves and longer lulls between sets, making it easier to get out the back. Keep an eye on this one, but it’s still a way off so don’t hold your breath.

Overall, if you’re looking for the true standout, it’s Monday the 20th. The conditions are clean, the swell is rideable, and the energy is there. The Sunday the 26th is a close second for the glassy morning, but it’s smaller and more dependent on the longer period working at a beach break.

Rusty out.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Mon morning, min 9°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 17°C on Sat morning, min 11°C on Wed night). Wind will be generally light.

Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sun
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
2
0
2
1
0
0
0
0
1
0
0
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
ESE
9
0.2
S
12
0.2
S
11
0.2
S
7
0.1
S
10
0.2
S
11
0.3
S
10
1.7
S
10
1.3
S
8
1.4
S
8
1.7
S
8
1.1
S
8
1.3
S
7
0.9
SSE
6
0.9
SSE
5
0.6
S
8
0.6
S
10
0.5
S
9
0.6
E
8
0.7
ENE
9
0.9
ENE
9
Wave Graph
Metric surfscale
Energy kJ
17
10
10
4
2
10
19
550
245
283
381
138
154
53
39
43
65
36
43
80
156
Wind (km/h)
15
WNW
20
W
20
W
10
WNW
15
WNW
15
W
10
W
10
S
10
SSE
10
WSW
20
SSW
20
SSE
15
SSW
15
S
15
S
10
SW
10
S
10
ESE
5
W
10
N
15
NE
Wind State
off
off
off
off
off
cross-off
cross-off
cross
cross-on
cross-off
cross
cross-on
cross
cross
cross-on
cross-off
cross
on
off
cross-off
cross
High Tide
7:10AM1.09m
7:12PM1.77m
8:06AM1.12m
8:05PM1.81m
8:57AM1.15m
8:55PM1.80m
9:47AM1.18m
9:44PM1.74m
10:35AM1.20m
10:31PM1.62m
11:23AM1.22m
11:18PM1.47m
12:12PM1.24m
Low Tide
1:13AM0.04m
12:36PM0.27m
2:07AM-0.03m
1:31PM0.24m
2:57AM-0.07m
2:25PM0.23m
3:45AM-0.07m
3:17PM0.24m
4:30AM-0.03m
4:10PM0.28m
5:13AM0.04m
5:05PM0.33m
5:54AM0.13m
6:03PM0.40m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:00
7:00
7:00
6:58
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:01
5:02
5:04
5:04
5:05
5:05
5:06
 mm
Temp °C
11
19
17
13
19
17
14
15
15
12
16
15
13
16
15
13
17
16
13
17
16
Feels °C
6
14
12
9
14
13
10
12
12
9
11
11
10
13
12
11
15
14
12
14
13
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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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