Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Issued: 3 pm 05 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) - 6ft (1.9m), 10s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 7 Jul, 1PM (local time) - 10ft (3.0m), 11s period, SE swell with 2,544 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 8 Jul, 10PM (local time) - 6ft (1.9m), 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 1.9m and 10s period with a secondary swell of 1.2m and 12s. Another secondary swell of 2.0m and 8s 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 3.0m 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 0.7m 4s period and expected on Sunday (Jul 12) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 8th Jul)6ft (1.9m) 10s
Best Surf10PM (Wed 8th Jul)6ft (1.9m) 10s
Most Powerful 1PM (Tue 7th Jul)10ft (3.0m) 11s

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


Updates in  hr  min  s Forecast update imminent

Alright folks, Rusty here. Let’s take a look at what Thirroul’s got cooking for us over the next couple of weeks.

First up, it’s a bit of a rough start. Sunday the 5th is a write-off with rain showers and a strong 19 mph south wind slapping the swell into a messy 10 ft cross-onshore chop. That’s not surf, that’s a washing machine. The combined swell energy is pumping (2799), but with that wind, it’s all for nothing. Monday the 6th and Tuesday the 7th stay pretty average too – solid 8 ft to 10 ft SSE swell but the wind stays cross or cross-on, making things lumpy. The energy is massive (over 4000 on Tuesday arvo), but the quality just isn’t there for a good paddle.

The water temp is sitting at 65°F, which is about normal for this time of year – no surprises there.

Wednesday the 8th drops a touch in size to around 8 ft, but still cross-onshore from the S. Not much to get excited about. Thursday the 9th and Friday the 10th see the swell easing to 6 ft–6 ft, with lighter winds – still cross or cross-on, but the chop cleans up a bit. The energy drops into the 500s and 600s, so it’s weak-ish.

Now here’s a glimmer – Saturday morning the 11th. The swell drops to 4 ft from the SE with a period of 9 seconds, but the wind goes glassy from the NW. That’s clean, clean, clean. The energy is low (248), but for a small, clean session, this could be a fun little window for the logs or a fish. Don’t expect barrels – just cruisey lines. After that, it fades fast. Sunday the 12th through to Wednesday the 15th is a flat spell. We’re talking 1.0 ft to 3 ft and dropping – basically a lull. The energy drops into double digits by Tuesday. That’s a solid 4-day gap with nothing worth paddling out for. You’d be better off going for a run.

Then Thursday the 16th livens up again. A fresh 10 ft pulse of S swell arrives, but it’s cross-shore with 16–19 mph winds – lumpy and messy. The energy is high (3417), but again, the wind ruins it. Now, here’s where it gets interesting. Friday the 17th morning: we’ve got 8 ft of SSE groundswell, period 10 seconds, and the wind shifts cross-offshore from the SW at only 6 mph. The comment says “excellent surf conditions for experienced surfers,” and I can see why. The combined energy (1876) is solid – this is a standout. The wave size is over 8 ft, so it’s experts-only, but if you’ve got the skill, this is the best window early in the run. The break at Thirroul is a beach and reef setup, and with that SSW cross-off wind, it’ll hold shape nicely.

Saturday the 18th is another big day – 10 ft SE groundswell with a 12-second period and a clean offshore NW wind at 6 mph. That’s classic Thirroul with a nice long-period groundswell. Combined energy is 2257 – strong. The period is over 11 seconds, so it’ll have plenty of grunt. This spot handles that direction well, so expect long, powerful walls. Sunday the 19th holds 6 ft to 7 ft SE swell with clean offshore or cross-off winds, energy around 772 to 2007. Monday the 20th still offers 8 ft SSE swell with light cross-off breeze, energy 1171.

So overall, the real standout is Friday 17th morning through Monday 20th morning. If you can only pick one, Friday morning the 17th with that light cross-off and 8 ft SSE groundswell is the pick – clean, powerful, and for the experienced crew. Saturday the 18th morning runs a close second with that offshore NW wind and a longer period. The early part of the forecast is a battle with onshore wind and big messy swell, and the middle week goes flat. But that last few days come good.

Stay stoked, and mind the crowds – Thirroul can get busy when it’s clean. - Rusty

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sun afternoon. Very mild (max 15°C on Wed morning, min 10°C on Tue night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Sat morning, min 10°C on Wed night). Wind will be generally light.

Sun
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
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
0
0
2
3
3
3
3
2
1
4
2
1
2
2
2
2
2
1
2
1
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)
3
SSE
12
3
SSE
10
2.5
SSE
10
2.5
SSE
10
3
SSE
10
3
SSE
10
3
SE
11
3
SE
11
2.4
SE
10
2.4
SSE
10
1.9
SE
10
1.9
SE
10
1.8
SE
10
1.7
SE
9
1.8
SE
9
1.7
SE
10
1.5
SE
10
1.2
SE
9
1.1
SE
9
0.9
ESE
12
0.9
ESE
11
Wave Graph
Metric surfscale
Energy kJ
2798
1575
1313
1293
1673
1792
2460
1915
1195
1042
738
681
614
471
531
542
399
225
189
213
173
Wind (km/h)
30
S
25
SSE
25
SSE
25
S
20
SSW
20
SSW
20
SSW
20
SSW
20
SSW
20
S
15
SW
15
S
15
SSE
10
SW
10
SSW
10
SSE
10
WNW
5
WNW
5
NNE
10
WNW
15
NNW
Wind State
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross-off
cross
cross-on
cross-off
cross
cross-on
off
glassy
cross
off
cross-off
High Tide
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
5:00AM1.03m
5:22PM1.60m
6:09AM1.05m
Low Tide
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
10:39AM0.31m
00:15AM0.15m
11:39AM0.29m
light rain
light rain
light rain
light rain
rain showers
cloud
rain showers
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
cloud
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>
4:58
4:59
4:59
5:00
5:00
5:00
5:00
5:01
 mm
2
3
2
2
1
1
Temp °C
14
14
14
14
13
14
14
14
15
14
10
15
15
13
15
14
12
18
18
12
20
Feels °C
8
8
9
9
8
10
10
10
10
10
7
12
12
11
13
12
11
15
16
10
15
Swell 1
Height (m)
Direction
Period (s)
0.1
E
8
0.1
E
13
0.1
E
14
0.1
E
16
2.5
SSE
10
2.5
SE
10
3
SE
11
2.5
SE
11
2.4
SE
10
2.2
SE
10
1.9
SE
10
1.9
SE
10
1.8
SE
10
1.7
SE
9
1.8
SE
9
1.7
SE
10
1.5
SE
10
1.2
SE
9
1.1
SE
9
0.9
ESE
12
0.9
ESE
11
Energy kJ
1
4
4
5
1360
1299
2097
1625
1195
899
738
681
614
471
531
542
399
225
189
213
173
Swell 2
Height (m)
Direction
Period (s)
0.1
E
16
0.1
S
20
1
ESE
13
0.9
ESE
14
1.2
ESE
12
1.1
ESE
11
0.9
ESE
10
0.1
S
16
0.1
S
15
0.1
S
21
0.1
S
16
0.2
ESE
13
0.3
ESE
12
0.8
SE
9
0.6
SE
8
Energy kJ
5
8
373
265
406
275
140
5
4
8
5
18
28
93
58
Swell 3
Height (m)
Direction
Period (s)
0.1
S
23
0.1
S
18
0.1
S
21
0.1
S
20
0.1
S
19
0.1
SE
11
0.3
ESE
14
0.5
E
8
0.1
S
14
Energy kJ
11
6
9
8
7
5
40
31
4
Wind waves
Height (m)
Direction
Period (s)
3
SSE
12
3
SSE
10
2.5
SSE
10
2.5
SSE
10
3
SSE
10
3
SSE
10
3
SE
11
3
SE
11
2.4
SSE
10
2.1
SE
8
0.3
NNW
3
Energy kJ
2798
1575
1313
1293
1673
1792
2460
1915
1042
585
1
Nearest Offshore or Glassy
Rating
(10 max)
4
3
3
3
5
5
4
5
4
4
4
3
3
2
3
3
2
2
2
2
2
Distance (km)
415
247
173
48
5
5
11
5
5
48
0
5
5
0
2
5
0
0
2
0
2
Best forecast wave conditions in Illawarra
Rating
(10 max)
3
5
5
4
5
4
4
4
3
3
3
3
3
2
2
2
2
2
Best forecast wave conditions in Australia
Rating
(10 max)
9
7
4
4
8
7
4
7
7
5
5
4
4
5
4
4
4
3
2
9
7
Header Global
Rating
(10 max)
9
7
5
6
8
7
5
5
9
8
9
9
5
6
6
5
8
7
4
9
9
  • 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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