Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 am 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
17.9° C
0.4° 

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


Thirroul surf forecast from 6 Aug 2026:

  • Best quality surf: Monday 10 Aug, 1PM (local time) - 4ft (1.2m), 9s period, ENE swell with offshore winds.
  • Most powerful swell: Friday 14 Aug, 7AM (local time) - 8ft (2.4m), 11s period, SSE swell with 1,387 kJ wave energy.
  • Next surfable swell (1★+): Friday 7 Aug, 10PM (local time) - 1.5ft (0.5m), 9s period with SE 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 (Aug 07) at 10PM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.5m and 8s. 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 2.4m 11s and forecast to arrive on Friday (Aug 14) 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 2.0m 6s period and expected on Thursday (Aug 13) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Fri 7th Aug)1.5ft (0.5m) 9s
Best Surf 1PM (Mon 10th Aug)4ft (1.2m) 9s
Most Powerful 7AM (Fri 14th Aug)8ft (2.4m) 11s

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


The Lowdown

Alright, Rusty here. Let’s break down what’s in store for Thirroul over the next couple of weeks. The first bit is flat and frustrating, but there’s a proper gem waiting if you’ve got the patience.

The opening stretch is a tough watch. From Friday the 7th through Sunday the 10th, it’s tiny, messy, and mostly not worth paddling out. We’re looking at 2 to 3 foot swells with short periods, and only a couple of brief clean windows. Saturday morning the 8th is glassy with a 2 foot S swell, but the period is only 8 seconds and the energy is weak (90), so it’s really just a knee-high dribbler. Sunday morning the 9th looks clean with a 3 foot ENE swell (period 8 seconds), but it’s still pretty ordinary. The combined energy is only moderate (135). Not going to get the blood pumping.

Monday the 10th afternoon offers a glimmer with a 3 foot ENE swell and clean offshore WNW wind at 15 mph, but again, the size and period aren’t there to get excited about. Tuesday the 11th morning is the first real sign of life – a clean 3 foot S swell with an 11-second period and 15 mph offshore W wind. The energy is moderate (236) and it’s the first “expect good surf conditions” call. That’s your best early-week option, but it’s still only waist-high at best.

Then the mid-week drops off hard. Wednesday through Thursday morning is tiny – 0.5 to 2 feet – with nothing doing. But hold on, because Thursday afternoon the 13th is where things start to change. A 8 foot S swell rolls in with an 11-second period, and the combined energy jumps to 1244 – that’s strong. The wind is cross-off from the WSW at 15 mph, so it’s clean. This is not for beginners; 8 feet is big and powerful.

Friday the 14th is the standout. Morning has a 8 foot SSE swell, 11-second period, and 1256 energy, with clean cross-off WSW wind. Then Friday afternoon is where it really shines: a 6 foot S swell, 10-second period, with light offshore W wind at 9 mph. The wave comment says “expect very good surf conditions,” and the energy is still strong (654). The water temp is 64°, which is about average for this time of year. That afternoon session is the one to circle – clean, offshore, and a proper long-period groundswell. This is a classic point-and-reef setup, and that long period will make the waves peel nicely.

Saturday the 15th goes downhill fast as the wind swings southerly and gets messy. The rest of the second week is small, choppy, and mostly not worth it until the very end.

Looking further out to Friday the 21st and Saturday the 22nd, there’s a long-range promise that looks real good. Friday morning the 21st has a 6 foot ENE swell with a 13-second period, light offshore W wind at 6 mph, and excellent surf conditions for experienced surfers – combined energy is 1028. Saturday morning the 22nd is glassy, with a 5 foot ENE swell, 13-second period, and a whopping 1513 energy. That’s a strong, clean groundswell with zero wind. This is a long-period swell, so it’ll be best at the reef. Keep in mind this is over a week away, so it’s promising but not locked in.

Crowds at Thirroul can be an issue sometimes, so for the Friday afternoon session on the 14th and that long-range Saturday morning on the 22nd, expect company. But for quality like that, it’s worth it.

Stay patient, get on that Friday the 14th afternoon, and keep an eye on the 21st and 22nd.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 16°C on Fri morning, min 9°C on Fri night). Winds increasing (calm on Sat morning, fresh winds from the NW by Sun night).

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 18°C on Tue afternoon, min 8°C on Tue night). Winds increasing (light winds from the NW on Tue night, strong winds from the WSW by Wed night).

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
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
1
1
0
1
1
0
1
0
1
0
2
1
1
0
0
0
0
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)
0.5
SSE
10
0.6
SSE
9
0.5
SSE
9
0.6
S
8
0.6
ENE
8
0.6
E
8
0.9
ENE
8
1.1
NE
9
1.6
ENE
7
1.3
ENE
9
0.9
ENE
9
0.6
ENE
9
0.9
S
11
0.5
S
12
0.6
S
8
0.5
S
10
0.6
S
10
0.4
S
9
0.2
ENE
10
2.3
S
11
2
S
11
Wave Graph
Metric surfscale
Energy kJ
54
56
48
43
53
48
89
190
242
280
145
58
189
76
46
49
71
23
10
1230
918
Wind (km/h)
15
W
15
SSE
10
W
5
NNE
20
NE
10
NNW
15
NNW
20
NNE
25
NW
30
NW
25
WNW
25
W
25
W
10
W
10
NW
15
NNW
20
NW
30
W
30
WSW
25
WSW
20
W
Wind State
cross-off
cross-on
off
glassy
cross-on
cross-off
cross-off
cross
cross-off
cross-off
off
cross-off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
2:58PM1.41m
3:39AM0.97m
4:05PM1.49m
4:58AM0.98m
5:10PM1.58m
6:05AM1.04m
6:08PM1.67m
7:01AM1.10m
7:01PM1.73m
7:50AM1.17m
7:50PM1.75m
8:36AM1.23m
8:37PM1.72m
Low Tide
9:51PM0.34m
9:16AM0.39m
11:05PM0.25m
10:26AM0.38m
00:08AM0.14m
11:31AM0.33m
1:02AM0.05m
12:29PM0.28m
1:50AM-0.01m
1:23PM0.23m
2:34AM-0.04m
2:14PM0.20m
3:15AM-0.02m
clear
clear
clear
clear
part cloud
part cloud
cloud
light rain
rain showers
cloud
part cloud
part cloud
clear
clear
clear
light rain
cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:45
6:43
6:43
6:41
6:41
6:39
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:19
5:20
5:21
5:21
5:22
5:22
5:22
 mm
1
1
2
Temp °C
16
14
10
16
15
11
16
15
15
15
13
13
17
18
10
11
11
12
13
14
12
Feels °C
12
10
8
13
11
9
12
9
10
9
7
8
11
14
6
7
7
5
5
7
6
  • Map Icons:
  • Break
  • 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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