Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Issued: 3 pm 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.4° 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 6 Jul 2026:

  • Best quality surf: Thursday 9 Jul, 10PM (local time) - 5ft (1.6m), 9s period, SE swell with glassy winds.
  • Most powerful swell: Tuesday 7 Jul, 1PM (local time) - 11ft (3.5m), 11s period, SE swell with 2,717 kJ wave energy.
  • Next surfable swell (1★+): Thursday 9 Jul, 10PM (local time) - 5ft (1.6m), 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 Thursday (Jul 09) at 10PM. The primary swell is predicted to be 1.6m and 9s period with a secondary swell of 0.2m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Thirroul in the next 16 days are 3.5m 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 0.6m 4s period and expected on Monday (Jul 13) at 7PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 9th Jul)5ft (1.6m) 9s
Best Surf10PM (Thu 9th Jul)5ft (1.6m) 9s
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

Righto, let’s have a look at what’s on the cards for Thirroul over the coming 16 days. It’s a beach and reef setup, exposed to the swell, and mostly intermediate territory.

We start off with a bit of a rough patch. The first couple of days, Monday the 6th and Tuesday the 7th of July, bring some serious size—up to 10ft to 12ft—but the wind is cross or cross-on, making it messy. This is big, heavy stuff (combined swell energy of 3849 to 4750, so plenty of power), and with that short period around 10 seconds, it’s gonna be a battle. Beginners should steer well clear; even for experienced surfers, it’s a challenge. The water temp is 65°, which is about average for this time of year, nothing unusual there.

Wednesday the 8th and Thursday the 9th stay marginal, with dropping swell but still cross-shore winds. It’s not the cleanest window.

Then we get a nice little breather. Friday the 10th and Saturday the 11th see the swell drop to around 5ft, but the wind goes glassy on Friday morning and afternoon, and then light offshore on Saturday. The swell direction is SE, period 9-10 seconds—decent shape for the reef. This is clean, small, and fun, but the combined energy is modest (around 258-441). It’s not a standout, but it’s a solid window for a longboard or a fish.

The real standout—and I mean, this is the one to circle on your calendar—is Friday the 17th of July. We get a clean 7ft S swell, period 11 seconds (long-period groundswell), with offshore wind from the NW in the morning. That’s a recipe for some proper waves at Thirroul. Combined swell energy hits 1385, so there’s good grunt behind it. This is for experienced surfers only at that size, but it’ll be firing and clean. It’s the best on offer hands down.

Following that, Saturday the 18th and Sunday the 19th stay rideable with clean conditions and dropping swell, but nothing that matches the Friday stand-out.

After that, the last few days (20th-21st July) see a big jump back up to 10ft on the 21st, but with cross-offshore wind. It’s clean but heavy, and combined energy is over 1700. Only for the brave.

Overall: We suffer through a big, windy start, get a couple of glassy small days mid-week, and then Friday the 17th is the clear winner. Get on it.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Mon afternoon. Very mild (max 15°C on Tue morning, min 11°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Thu afternoon. Very mild (max 18°C on Sat morning, min 11°C on Thu night). Wind will be generally light.

Mon
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
3
3
3
2
2
2
2
2
1
2
2
2
2
2
2
2
1
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)
2.5
SSE
10
3
SSE
10
3
SE
10
3.5
SE
11
3
SE
11
2.5
SE
10
2.3
SSE
10
1.6
SSE
9
1.7
SE
11
1.6
SE
9
1.6
SE
9
1.6
SE
9
1.6
SE
10
1.4
SE
10
1.1
SE
9
1
SE
8
0.9
ESE
11
0.8
ESE
11
0.6
ESE
10
0.5
ESE
9
0.3
ESE
9
Wave Graph
Metric surfscale
Energy kJ
1293
1724
1962
2586
1708
1259
981
450
677
440
393
384
428
354
199
139
214
138
85
50
15
Wind (km/h)
25
S
20
SSW
20
SSW
20
S
20
S
20
SSW
20
S
15
SW
15
SSW
10
SSE
10
SW
5
SSW
5
E
10
WNW
5
NW
10
NW
10
WNW
20
W
20
W
15
NW
20
WNW
Wind State
cross-on
cross
cross
cross
cross
cross
cross
cross-off
cross
cross-on
cross-off
glassy
glassy
off
cross-off
cross-off
off
off
off
off
off
High Tide
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
7:10AM1.09m
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
12:36PM0.27m
rain showers
rain showers
part cloud
rain showers
rain showers
clear
part cloud
part cloud
cloud
rain showers
rain showers
part cloud
part cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
<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
5:01
 mm
1
1
2
2
1
2
Temp °C
14
14
15
15
15
15
15
12
14
14
13
15
15
12
18
17
12
16
16
11
13
Feels °C
9
10
10
11
11
11
11
9
11
12
12
13
14
10
15
14
9
10
11
6
9
Swell 1
Height (m)
Direction
Period (s)
0.1
E
16
2.5
SSE
10
3
SE
10
3
SE
11
3
SE
11
2.5
SE
10
2.1
SE
10
1.6
SSE
9
1.7
SE
11
1.6
SE
9
1.6
SE
9
1.6
SE
9
1.6
SE
10
1.4
SE
10
1.1
SE
9
1
SE
8
0.9
ESE
11
0.8
ESE
11
0.6
ESE
10
0.5
ESE
9
0.3
ESE
9
Energy kJ
5
1360
1601
2164
1708
1259
849
450
677
440
393
384
428
354
199
139
214
138
85
50
15
Swell 2
Height (m)
Direction
Period (s)
0.1
S
20
0.9
ESE
14
0.7
ESE
14
1.2
ESE
12
1.2
ESE
11
0.9
SSE
10
0.6
ESE
10
0.1
S
16
0.1
S
15
0.1
S
21
0.1
S
16
0.4
ESE
13
0.6
ESE
12
0.6
SE
8
0.5
SE
8
0.4
SE
8
0.3
S
6
0.2
S
5
Energy kJ
8
286
198
440
353
151
78
5
4
9
5
55
113
54
32
16
7
2
Swell 3
Height (m)
Direction
Period (s)
0.1
S
15
0.1
S
19
0.1
S
18
0.1
S
16
0.1
S
20
0.1
S
15
0.1
S
14
0.1
S
15
0.1
S
16
0.1
S
15
0.2
N
4
0.2
SSE
8
0.1
SE
7
Energy kJ
4
7
6
5
8
4
4
4
5
4
1
6
2
Wind waves
Height (m)
Direction
Period (s)
2.5
SSE
10
3
SSE
10
3
SSE
10
3.5
SE
11
2.3
SSE
10
0.3
NW
2
0.3
W
2
0.5
WSW
3
0.4
WSW
3
0.5
W
3
Energy kJ
1293
1724
1962
2586
981
1
1
6
4
4
Nearest Offshore or Glassy
Rating
(10 max)
3
4
5
4
4
4
2
3
3
3
2
2
2
2
2
2
2
1
1
1
1
Distance (km)
48
48
5
11
11
5
11
5
2
5
0
0
0
0
0
0
0
0
0
0
328
Best forecast wave conditions in Illawarra
Rating
(10 max)
3
4
5
4
4
4
4
3
3
3
2
2
3
2
2
2
2
1
1
1
Best forecast wave conditions in Australia
Rating
(10 max)
7
8
7
5
5
7
7
5
4
4
5
4
4
3
3
2
2
2
2
9
8
Header Global
Rating
(10 max)
7
8
7
5
5
9
8
9
8
7
5
6
5
8
5
5
5
5
5
9
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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