Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 pm 15 Jul 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 15 Jul 2026:

  • Best quality surf: Thursday 16 Jul, 4AM (local time) - 7ft (2.2m), 8s period, S swell with cross-offshore winds.
  • Most powerful swell: Thursday 16 Jul, 4AM (local time) - 7ft (2.2m), 8s period, S swell with 548 kJ wave energy.
  • Next surfable swell (1★+): Thursday 16 Jul, 1AM (local time) - 5ft (1.5m), 7s 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 Thursday (Jul 16) at 1AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.1m and 15s. Another secondary swell of 0.1m and 11s 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 2.2m 8s and forecast to arrive on Thursday (Jul 16) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Jul 20) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 16th Jul)5ft (1.5m) 7s
Best Surf 4AM (Thu 16th Jul)7ft (2.2m) 8s
Most Powerful 4AM (Thu 16th Jul)7ft (2.2m) 8s

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


The Lowdown

G’day, Rusty here. Look, I’ll be straight with you – the next few days at Thirroul are a bit of a write-off. We’ve got a real flat spell to kick things off, so don’t even bother paddling out until the weekend after next. The wait will be worth it.

The first real chance you’ll get is on Sunday, July 19th. The surf is marginal, with a 6ft swell from the ENE, but the cross-onshore wind has it looking a bit average. The combined energy is moderate (567). It’s nothing to write home about.

Monday, July 20th is where it starts to get interesting. The morning is your best bet for the whole week. We’ve got a clean 5ft ENE swell with a proper cross-offshore breeze from the NNW, and the wave energy is moderate (567). The water temp is about 64°, which is pretty normal for the time of year. This is a solid window for intermediate surfers. Crowds can turn up here sometimes, so get in early.

By Tuesday, July 21st, the mornings are still clean with a drop to 4ft ENE, but the energy is a bit lower (363). It’s still surfable, just not as punchy.

Wednesday, July 22nd morning is a standout for the glassy conditions – a 4ft ENE swell with glassy wind from the SW. That’s the kind of morning you dream about, even if the swell is small. The period is 10 seconds, so it’s a proper groundswell that will wrap in nicely. Energy is moderate (248).

After that, we hit a big gap. From Thursday, July 23rd right through to Monday, July 27th, the surf is tiny and weak. The swell drops below 3ft, and the wind is all over the place. Not worth the paddle.

Then, on Tuesday, July 28th, the ocean wakes up. We’ve got a 8ft S swell with a period of 9 seconds, and the combined energy is strong at 1462. That’s a lot of water moving. Problem is, the wind is cross-shore, so it’s going to be a messy, choppy mess. This one’s for the experts only – too big and too ugly for most.

The real gem in this whole stretch is Wednesday, July 29th. The swell drops to 7ft from the S, still a bit hefty, but the wind is light and cross-shore, with a moderate energy reading of 1002. The period is short at 8 seconds, so it’ll be a bit crumbly, but there’s plenty of power. This is a big-swell day for the experienced crew.

And finally, Thursday, July 30th. That’s the one. The morning shows a 5ft SSE swell with a very good 11-second period, and a clean offshore wind from the W. The energy is strong at 611. This is the best-looking day of the whole outlook. The swell direction is a bit south of the optimum, but clean conditions and a proper groundswell make it a winner. Get on it.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Thu night. Very mild (max 16°C on Thu morning, min 11°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

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

Wed
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
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
2
0
0
0
0
0
0
0
0
1
2
2
3
3
1
2
2
0
2
2
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)
1.7
S
8
1.5
S
7
1.5
S
8
1.8
SSE
7
1.3
S
7
1.2
S
6
0.9
S
5
0.7
S
10
0.5
S
10
0.9
E
7
1.1
E
9
1.6
ENE
10
1.6
ENE
10
1.6
ENE
10
1.5
ENE
10
1.4
ENE
10
1.4
ENE
10
1.3
ENE
10
1.3
ENE
10
1.2
ENE
10
1.1
ENE
10
Wave Graph
Metric surfscale
Energy kJ
405
251
286
355
148
89
43
94
51
82
194
490
520
520
442
388
410
320
345
292
223
Wind (km/h)
20
S
15
SW
20
S
25
S
20
SSW
20
SSW
15
S
15
SSW
15
S
15
SSE
10
S
5
SE
10
SE
5
W
10
NNW
15
NE
10
NW
15
NNW
15
NE
5
WSW
5
SW
Wind State
cross-on
cross-off
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross-on
off
cross-off
cross
cross-off
cross-off
cross
cross-off
glassy
High Tide
8:55PM1.80m
9:47AM1.18m
9:44PM1.74m
10:35AM1.20m
10:31PM1.62m
11:23AM1.22m
11:18PM1.47m
12:12PM1.24m
00:06AM1.30m
1:01PM1.26m
00:57AM1.14m
1:53PM1.27m
1:54AM1.01m
Low Tide
3:45AM-0.07m
3:17PM0.24m
4:30AM-0.03m
4:10PM0.28m
5:13AM0.04m
5:05PM0.33m
5:54AM0.13m
6:03PM0.40m
6:34AM0.22m
7:05PM0.46m
7:14AM0.31m
8:15PM0.49m
7:57AM0.39m
clear
clear
part cloud
part cloud
light rain
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:00
6:58
6:58
6:58
6:58
6:56
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:04
5:04
5:05
5:05
5:06
5:07
5:07
5:07
 mm
4
1
Temp °C
14
12
16
16
14
14
15
13
15
15
14
16
15
13
17
16
12
18
18
14
17
Feels °C
10
9
10
11
10
11
13
11
11
12
11
14
13
13
14
13
10
15
15
12
15
  • Map Icons:
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  • 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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