Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 3 am 13 Jul 2026 (local time)

Forecast update in  hr  min

Today's Thirroul sea temperature is
18.2° C
0.6° 

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


Thirroul surf forecast from 12 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 10PM (local time) - 6ft (1.8m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Wednesday 15 Jul, 10AM (local time) - 7ft (2.2m), 11s period, S swell with 1,069 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 1AM (local time) - 1.5ft (0.4m), 10s 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 Wednesday (Jul 15) at 1AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.1m and 10s. Another secondary swell of 0.5m and 6s 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 11s and forecast to arrive on Wednesday (Jul 15) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 2s period and expected on Tuesday (Jul 14) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 15th Jul)1.5ft (0.4m) 10s
Best Surf10PM (Wed 15th Jul)6ft (1.8m) 10s
Most Powerful10AM (Wed 15th Jul)7ft (2.2m) 11s

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


Righto, let’s have a look at what’s on offer for the next couple of weeks. Honestly, it’s a pretty quiet start. We’ve got a few days of flat to tiny dribble, nothing worth paddling out for until the middle of the week.

The first real chance to get wet comes Wednesday, July 15. Thirroul picks up a south swell pushing 7ft, with an 11-second period that’s got some decent energy behind it (combined energy at 1518). That’s a proper groundswell, and with the swell direction from the south, it’s a good match for the break’s ideal SE direction. But the wind is light, cross-shore in the morning, and that’s about the best we’ll see. The afternoon sees the wind shifting cross-onshore, and the swell drops a bit, so the morning session is the one to aim for. That 7ft is heading into the “too big for beginners” range, but for intermediates, it’s a fun, punchy wave. The water temp is sitting at 65°F, which is about 1°F above normal for this time of year—nothing unusual, just a touch warmer than average.

Moving into Thursday, July 16, the swell is still around 6ft but the period drops to 8 seconds, and the wind goes cross-shore with a moderate breeze. It’s going to be a bit messy, with a cross-chop building. This is more of a challenge for paddle surfing, and honestly, with the combined energy still at 798, it might be more interesting for the kite crew than for a clean wave.

Friday, July 17, is a write-off—swell is down, period is short, and the wind is onshore. The weekend isn’t much better, with weak, short-period energy and onshore winds.

The standout window arrives on Sunday, July 19, and Monday, July 20. Sunday morning, Thirroul has glassy, clean conditions with a light NE breeze, swell from the east at 4ft and a 9-second period. The combined energy is 298, which is moderate but the glassy wind makes it look like a dream. Monday morning, July 20, offers a similar 4ft east-northeast swell with a 9-second period, light cross-offshore wind from the NNW, and clean conditions (combined energy 324). That’s the pick of the week—small but clean, fun little waves for a longboard or a minimal.

After that, the second week starts to fade. Tuesday, July 21, morning has a clean 4ft ENE swell, but the energy drops. From Wednesday, July 22, through to the end of the month, waves are tiny—2ft to 3ft—with occasional glassy moments but no real power. The best of those days is Wednesday, July 22, morning, with total glass and a 3ft ENE swell, but it’s only for the patient soul on a foamie.

Overall, the goods are in the middle of the first week and the start of the second. The standouts are Wednesday, July 15, morning for the bigger, punchy south swell, and Sunday, July 19, morning for the glassy, clean small waves. The rest is marginal, so keep an eye on the charts—it tends not to stay this flat for too long.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Fri morning, min 11°C on Thu night). Wind will be generally light.

Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
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
0
0
0
0
1
3
1
3
1
0
0
0
0
0
0
0
2
2
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
S
12
0.2
S
11
0.2
S
7
0.1
S
10
0.2
S
11
0.4
S
10
2.2
S
11
1.8
S
9
1.8
S
10
1.9
S
8
1.4
SSE
8
1.4
SSE
7
1.2
SSE
6
1
SSE
5
0.7
E
8
0.9
E
8
1
E
8
1.2
E
9
1.2
E
9
1.2
E
9
1.2
ENE
9
Wave Graph
Metric surfscale
Energy kJ
10
10
4
2
9
35
1069
538
593
489
232
158
84
58
61
104
122
225
230
251
248
Wind (km/h)
20
W
20
W
15
WNW
15
WNW
15
W
15
WSW
10
S
10
SSE
10
SW
20
S
25
S
20
SSW
20
SSW
20
S
15
SSW
10
S
10
SSE
5
SE
5
NNE
15
NE
10
NW
Wind State
off
off
off
off
cross-off
cross-off
cross
cross-on
cross-off
cross
cross-on
cross
cross
cross-on
cross
cross-on
cross-on
glassy
glassy
cross-on
off
High Tide
7:12PM1.77m
8:06AM1.12m
8:05PM1.81m
8:57AM1.15m
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
Low Tide
12:36PM0.27m
2:07AM-0.03m
1:31PM0.24m
2:57AM-0.07m
2:25PM0.23m
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
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:00
7:00
7:00
6:58
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:01
5:02
5:04
5:04
5:05
5:05
5:06
 mm
Temp °C
18
17
13
18
17
13
15
15
11
15
15
14
16
15
12
14
16
15
17
16
12
Feels °C
12
12
9
13
13
9
12
12
8
10
10
10
12
11
9
12
14
14
14
13
10
  • 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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