Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Issued: 3 am 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.5° C

Slightly warmer than usual

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


Thirroul surf forecast from 5 Jul 2026:

  • Best quality surf: Wednesday 8 Jul, 10PM (local time) - 6.5ft (2.0m), 10s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 7 Jul, 1PM (local time) - 11ft (3.5m), 11s period, SE swell with 2,667 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 8 Jul, 10PM (local time) - 6.5ft (2.0m), 10s period with SSE 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 08) at 10PM. The primary swell is predicted to be 2.0m and 10s period with a secondary swell of 1.1m and 12s. Another secondary swell of 2.1m and 9s 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 3.5m 11s and forecast to arrive on Tuesday (Jul 07) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Jul 12) at 7PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 8th Jul)6.5ft (2.0m) 10s
Best Surf10PM (Wed 8th Jul)6.5ft (2.0m) 10s
Most Powerful 1PM (Tue 7th Jul)11ft (3.5m) 11s

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


Updates in  hr  min  s Forecast update imminent

G’day, I’m Rusty. Let’s talk about what’s shaping up for Thirroul over the next couple of weeks. The start is a bit rough, nothing to get too excited about, but there are a couple of windows where it’ll clean up real nice.

The surf starts Monday, 6 July, but it’s ordinary. You got a solid 8ft swell from the SSE, with a 10-second period, but that south wind at 16 mph is blowing cross-on, making everything choppy and messy. The combined wave energy is 1321 (moderate), but it don’t help. Water temp is 65°, which is pretty normal for this time of year.

Tuesday the 7th, the swell picks up – morning 10ft from the SSE, afternoon 12ft from the SE with the period stretching to 11 seconds. The energy jumps right up (3694 to 4750, strong). But it’s still cross-shore wind, and it’s marginal with a cross-chop. That’s too big for beginners, and even for the crew, it’s lumpy.

Wednesday and Thursday keep the 8ft to 7ft swell going, but the wind stays cross or cross-on, so quality is poor. Energy drops to around 800-2400 (moderate). Nothing to rave about.

Now, Friday the 10th is where I get keen. The morning is still average with a 6ft SE swell, but the afternoon – beauty. The wind drops to glassy, nil from the SW, and you got a 6ft SE swell at 10 seconds. Energy is moderate at 549, but clean conditions are everything. This is the first true standout, Friday afternoon. That’s your best wave of the first week.

Saturday 11 July stays clean with light cross-off breezes, but the swell drops to 4ft in the morning and 3ft by the afternoon. Still fun for a longboard or a fish, with the period out at 12 seconds in the arvo giving it some shape. From there, the surf fades through Sunday and Monday, with the swell dropping below 3ft. The offshore wind on Sunday is a tease, but there’s barely any wave energy (153-209, weak).

The second week, from 14 July, you get a little pulse of S swell back – 5ft to 6ft, with clean cross-off winds from the west. The period is short though, only 7-8 seconds, so it’s a windswell feel. Energy stays moderate (290-675). It’s surfable and clean, but nothing special.

From Thursday 16 July, it goes downhill. Southerly winds crank up to 16-28 mph, cross-shore and messy, with lumpy chop. The swell is all over – 5ft, then dropping to 2ft, then a weird 5ft with a long 15-second period on the 17th, but the wind ruins it. Energy is there (253-402, moderate to weak), but conditions are poor. That long period groundswell would be better at a point or reef, but at a beach and reef setup with that wind, it’s a write-off.

The last few days, from 18 to 21 July, are just poor. Strong cross-on winds, lumpy seas, and tiny swell. The 20th and 21st have clean winds but almost no energy (79 and below, very weak).

So, to wrap it up: Friday afternoon, 10 July, is the one – glassy conditions on a 6ft SE swell at 10 seconds. Get out there. The other glimmer is Tuesday 14 and Wednesday 15 July – clean, but the swell is short-period and small. Crowds at Thirroul can be a factor sometimes, so keep an eye out.

All the best,
Rusty

Short Range Forecast

Moderate rain (total 12mm), heaviest on Mon morning. Very mild (max 15°C on Mon morning, min 11°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 16°C on Sat morning, min 9°C on Fri night). Wind will be generally light.

Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
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
2
3
3
3
2
2
1
2
1
1
3
2
3
2
2
2
2
1
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)
2.5
SSE
10
2.5
SSE
10
3
SSE
10
3
SSE
10
3.5
SE
11
3
SE
11
2.5
SE
10
2.5
SSE
10
2.2
SE
10
2
SE
10
2
SE
10
1.9
SE
9
1.8
SE
9
1.7
SE
10
1.5
SE
9
1.3
SE
9
0.8
ESE
12
0.8
ESE
10
0.9
ESE
11
0.8
ESE
10
0.5
ESE
9
Wave Graph
Metric surfscale
Energy kJ
1313
1341
1724
1962
2586
1800
1446
1125
986
738
727
587
589
542
383
252
161
131
170
116
48
Wind (km/h)
25
S
25
S
20
SSW
20
SSW
20
SSW
20
S
20
SSW
20
S
15
SSW
15
S
15
S
10
SW
10
SSW
0
SW
5
W
10
NW
10
N
15
NW
20
NNW
25
NW
20
NW
Wind State
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
cross-off
cross
glassy
off
cross-off
cross-off
off
cross-off
cross-off
off
High Tide
12:44PM1.16m
00:26AM1.26m
1:34PM1.23m
1:22AM1.17m
2:29PM1.31m
2:30AM1.09m
3:26PM1.40m
3:45AM1.05m
4:24PM1.50m
5:00AM1.03m
5:22PM1.60m
6:09AM1.05m
6:18PM1.70m
Low Tide
6:26PM0.50m
7:02AM0.22m
7:32PM0.50m
7:48AM0.25m
8:46PM0.46m
8:41AM0.28m
10:01PM0.38m
9:39AM0.30m
11:11PM0.27m
10:39AM0.31m
00:15AM0.15m
11:39AM0.29m
1:13AM0.04m
light rain
rain showers
rain showers
part cloud
rain showers
rain showers
part cloud
clear
rain showers
cloud
cloud
cloud
light rain
light rain
part cloud
cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:01
7:01
7:01
7:01
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:59
4:59
5:00
5:00
5:00
5:00
5:01
 mm
2
2
1
2
3
2
1
2
Temp °C
15
14
14
14
15
14
15
14
12
15
15
12
14
13
12
16
15
11
18
16
12
Feels °C
10
9
10
10
11
10
10
10
9
11
11
9
12
13
10
13
12
8
13
11
8
Swell 1
Height (m)
Direction
Period (s)
0.1
E
16
0.1
E
16
2.5
SSE
10
2.5
SE
10
3
SE
11
3
SE
11
2.5
SE
10
2.2
SE
10
2
SE
10
2
SE
10
2
SE
10
1.9
SE
9
1.8
SE
9
1.7
SE
10
1.5
SE
9
1.3
SE
9
0.9
SE
9
0.8
ESE
10
0.9
ESE
11
0.8
ESE
10
0.5
ESE
9
Energy kJ
5
5
1360
1446
2164
1800
1446
967
800
738
727
587
589
542
383
252
112
131
170
116
48
Swell 2
Height (m)
Direction
Period (s)
0.1
E
13
0.1
S
20
0.9
ESE
14
0.6
ESE
14
1.1
ESE
12
1.1
ESE
11
0.6
ESE
10
0.3
ESE
10
0.1
S
16
0.1
S
15
0.1
S
19
0.1
E
16
0.6
ESE
13
0.8
ESE
12
0.7
SE
9
0.5
SE
8
0.5
SE
8
0.4
NE
6
Energy kJ
3
8
286
147
355
285
77
19
5
4
7
5
137
161
81
34
33
8
Swell 3
Height (m)
Direction
Period (s)
0.1
S
18
0.1
S
16
0.1
S
20
0.1
S
16
0.2
ESE
10
0.6
ESE
8
0.6
ESE
12
0.1
S
16
0.1
S
15
0.3
SE
8
Energy kJ
6
5
8
5
10
57
117
5
4
9
Wind waves
Height (m)
Direction
Period (s)
2.5
SSE
10
2.5
SSE
10
3
SSE
10
3
SSE
10
3.5
SE
11
1.7
SSW
6
2.5
SSE
10
2.2
SE
10
0.4
SW
3
0.3
N
2
0.4
NNW
3
0.7
N
4
0.6
NW
3
Energy kJ
1313
1341
1724
1962
2586
212
1125
986
3
1
3
16
9
Nearest Offshore or Glassy
Rating
(10 max)
3
3
5
2
4
4
4
4
4
3
3
3
3
3
2
2
2
2
2
1
1
Distance (km)
173
48
5
11
11
11
5
48
5
11
5
0
2
0
0
0
0
0
2
2
0
Best forecast wave conditions in Illawarra
Rating
(10 max)
3
5
2
4
4
4
4
4
3
3
3
3
3
2
2
2
2
2
1
1
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
8
7
4
5
7
6
6
4
4
5
4
4
4
2
2
8
6
5
5
Header Global
Rating
(10 max)
6
4
8
7
5
5
9
8
9
9
5
5
6
5
8
5
5
8
6
5
5
  • 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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