Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Issued: 3 am 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
19.0° C

1.2°C warmer than normal for this time of year

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


Thirroul surf forecast from 3 Jul 2026:

  • Best quality surf: Thursday 9 Jul, 10PM (local time) - 8ft (2.5m), 11s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Sunday 5 Jul, 4PM (local time) - 8ft (2.5m), 12s period, SSE swell with 1,979 kJ wave energy.
  • Next surfable swell (1★+): Saturday 4 Jul, 10AM (local time) - 3ft (0.9m), 12s 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 Saturday (Jul 04) at 10AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.4m 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 2.5m 12s and forecast to arrive on Sunday (Jul 05) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Saturday (Jul 04) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sat 4th Jul)3ft (0.9m) 12s
Best Surf10PM (Thu 9th Jul)8ft (2.5m) 11s
Most Powerful 4PM (Sun 5th Jul)8ft (2.5m) 12s

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


Updates in  hr  min  s Forecast update imminent

Alright, let's talk surf. The period kicks off kind of quiet, but there's plenty to look at.

Saturday July 4th we start small at Thirroul (beach and reef). There’s a clean 3ft south swell running, period 12 seconds, combined energy 235 – that’s weak energy. A light cross-offshore breeze in the morning is keeping it tidy. Water's about 66°, a touch warmer than usual for winter. Get out early because that afternoon the wind turns onshore and the swell drops. Saturday morning is your only real chance on day one.

Sunday July 5th the swell jumps to 8ft from the south, period 11 seconds, combined energy hits 1537 – moderate energy now. But the wind is blowing cross-shore at 15 mph, so it’s gonna be choppy and tough. Monday and Tuesday stay in the 7-8ft range, but wind stays messy, so it's more of a battle than a pleasure.

Now look at Saturday July 11th. Morning brings a clean 5ft south-southeast swell, period 10 seconds, light cross-offshore wind, combined energy 378. That afternoon? Glassy. Wind goes near flat calm, swell drops to 4ft. That Saturday afternoon session is the real highlight of the first week – clean, easy, and fun. No crowds mentioned, but spots like this can get a few people.

Sunday July 12th drops to 3ft with a light offshore, combined energy only 142 – weak. Monday July 13th is tiny, just over 1ft with offshore wind. Pretty flat through there.

Tuesday July 14th the ocean wakes up again – 10ft from the south, period 9 seconds, combined energy 1367, cross-offshore wind and clean. That’s expert-level size. Wednesday July 15th stays around 10ft with similar conditions, but short period means lumpy.

Heading into the second week: Saturday July 18th brings 8ft southeast swell, 11-second period, combined energy 1659. That afternoon it goes 12ft from the south-southeast, 11-second period, combined energy 5476 – that’s strong to very strong wave energy. Big, powerful, experts only. Then Sunday July 19th morning is the absolute standout of the entire outlook. Glassy conditions, 10ft south-southeast swell, 10-second period, combined energy 3573. That is clean, powerful, and will be excellent for experienced surfers. The long period and strong energy mean big sets with plenty of push, perfect for a reef break like Thirroul.

Best bets: Saturday July 11th afternoon for clean small waves, and Sunday July 19th morning for a big glassy session if you've got the skills. There’s a small flat spell around July 12th-13th, but it doesn’t last long.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Sun afternoon. Very mild (max 17°C on Sat morning, min 11°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Thu afternoon. Very mild (max 15°C on Tue morning, min 10°C on Tue night). Wind will be generally light.

Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
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
0
1
2
0
0
0
0
3
2
2
2
2
2
3
2
2
4
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
S
12
0.8
S
8
1.6
S
11
2.5
S
11
2.5
SSE
12
2.5
SSE
10
2.3
SSE
10
2.3
SSE
10
2.2
SSE
10
2.5
SSE
10
2.3
SE
10
3
SSE
10
2.5
SSE
10
2.2
SSE
10
2.5
SSE
10
2.5
S
9
2.5
S
9
2.4
SSE
10
2.2
SSE
10
2.1
SSE
10
1.7
SE
10
Wave Graph
Metric surfscale
Energy kJ
217
86
630
1525
1979
1314
978
981
951
1220
1164
1606
1209
904
1218
1210
1055
1215
1071
908
546
Wind (km/h)
15
WSW
10
SE
15
S
25
SSW
25
S
25
SSE
20
SSE
20
S
15
SW
15
SSW
25
S
20
SSW
20
SSW
20
SSW
20
SW
20
SSW
20
SSW
15
SW
20
SSW
15
S
10
SW
Wind State
cross-off
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-off
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
High Tide
11:14AM1.07m
10:58PM1.42m
11:57AM1.11m
11:39PM1.34m
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
Low Tide
4:39PM0.45m
5:44AM0.19m
5:29PM0.48m
6:21AM0.20m
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
clear
clear
part cloud
cloud
light rain
light rain
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
rain showers
cloud
light rain
mod rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:03
7:01
7:01
7:01
7:01
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:58
4:58
4:59
4:59
5:00
5:00
5:00
 mm
1
4
1
1
9
7
Temp °C
17
15
13
14
14
14
14
14
13
15
15
12
14
13
12
13
13
12
14
13
13
Feels °C
14
13
7
8
8
9
10
10
9
10
10
8
9
8
8
9
9
9
10
11
12
Swell 1
Height (m)
Direction
Period (s)
0.9
S
12
0.8
S
8
1
S
8
0.2
ENE
8
0.1
E
13
0.1
E
13
0.1
E
13
0.1
S
20
2.2
SSE
10
2.2
SSE
10
2.3
SE
10
2.4
SE
10
2.2
SE
10
0.9
ESE
12
2.3
SSE
10
2.3
SSE
9
2.3
SSE
9
2.4
SSE
10
2.2
SSE
10
2.1
SSE
10
1.7
SE
10
Energy kJ
217
86
140
6
4
3
4
8
951
990
1164
1195
899
220
978
885
890
1215
1071
908
546
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
8
0.4
SSE
12
0.6
S
11
0.1
NE
7
0.1
E
13
0.1
E
13
0.1
E
16
0.1
E
14
1
S
10
0.7
SE
13
0.7
S
11
0.5
S
10
0.9
ESE
13
0.9
ESE
12
0.7
ESE
11
0.2
SSE
15
0.1
S
16
0.8
SE
13
0.1
S
20
0.1
S
21
0.1
S
16
Energy kJ
15
44
93
2
3
3
5
4
212
178
110
49
249
213
109
22
5
215
8
9
5
Swell 3
Height (m)
Direction
Period (s)
0.1
E
13
0.2
ENE
7
0.2
ENE
7
0.1
E
13
0.1
E
16
0.8
ESE
13
0.1
S
16
0.1
S
19
0.1
S
18
0.1
S
16
Energy kJ
3
5
5
4
5
222
5
7
6
5
Wind waves
Height (m)
Direction
Period (s)
0.3
WSW
3
1.6
S
11
2.5
S
11
2.5
SSE
12
2.5
SSE
10
2.3
SSE
10
2.3
SSE
10
2.5
SSE
10
3
SSE
10
2.5
SSE
10
2.2
SSE
10
2.5
SSE
10
2.5
S
9
2.5
S
9
Energy kJ
2
630
1525
1979
1314
978
981
1220
1606
1209
904
1218
1210
1055
Nearest Offshore or Glassy
Rating
(10 max)
2
1
3
4
4
3
4
4
4
4
4
4
4
2
4
4
4
4
4
3
3
Distance (km)
0
36
36
39
140
118
48
48
5
5
48
5
5
11
5
39
39
0
36
5
0
Best forecast wave conditions in Illawarra
Rating
(10 max)
2
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
Best forecast wave conditions in Australia
Rating
(10 max)
5
5
6
5
4
7
4
4
8
7
5
5
6
5
5
4
4
4
4
4
4
Header Global
Rating
(10 max)
7
5
6
5
9
7
5
6
8
7
4
5
9
8
9
6
5
5
8
5
8
  • 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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