Thirroul Surf Break

Lat Long: 34.32° S 150.93° E

Thirroul Surf Forecast and Surf Report

Issued: 9 pm 10 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 10 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, 7AM (local time) - 10ft (3.0m), 10s period, S swell with 1,490 kJ wave energy.
  • Next surfable swell (1★+): Saturday 11 Jul, 4AM (local time) - 4.5ft (1.3m), 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 Saturday (Jul 11) at 4AM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.5m and 14s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Thirroul in the next 16 days are 3.0m 10s and forecast to arrive on Wednesday (Jul 15) at 7AM. 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 Sunday (Jul 12) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sat 11th Jul)4.5ft (1.3m) 9s
Best Surf10PM (Wed 15th Jul)6ft (1.8m) 10s
Most Powerful 7AM (Wed 15th Jul)10ft (3.0m) 10s

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


G’day, Rusty here, lookin’ at the next couple of weeks for Thirroul. Honestly, it’s a bit of a slow burn, with a long dry spell on the cards before things might get a little interesting. But we’ll take it day by day.

Right off the bat, Saturday the 11th of July is your best and really only true standout session in this whole stretch. Early morning, the wind’s light and offshore from the NW at 6 mph, and there’s a clean 4 ft swell rolling in from the SE with a 9-second period. The combined energy is a moderate 352, but the conditions are set to be clean and fun. It’s not huge, but for an intermediate wave at Thirroul’s beach and reef setup, this is the one to paddle out for. Crowds can sometimes be an issue here, so get in early to nab your share.

After that Saturday morning, things fade out fast. Saturday afternoon drops to a smaller 3 ft with a cross-shore wind, and then from Sunday the 12th through to Wednesday the 15th of July, it’s a real struggle. Sunday morning’s got 2 ft of swell with a moderate 16 mph offshore, but the energy is weak at 93, and it’s just ordinary. The whole stretch from Sunday to Tuesday sees tiny waves, poor conditions, and combined energy under 100. That’s a real dead zone, nearly four days of nothing worth paddling for.

Wednesday the 15th of July throws up a 8 ft swell from the S, period 10 seconds, with a massive 1879 combined energy, but it’s cross-shore with moderate breeze and the tide conditions look questionable. That size, and with chop on it, makes it one for experts only, and even then it’s not pretty. The afternoon drops to 5 ft but still cross and messy.

The rest of the second week doesn’t offer much to get excited about. Thursday the 16th has 5 ft swell but it’s cross-onshore and choppy – more of a windblown mess. There’s a brief window of hope on Monday the 20th of July with a clean 4 ft E swell, 10-second period, light offshore wind NNW at 9 mph, and a combined energy of 356. That’s surfable and clean, but it’s not a standout. Wednesday the 22nd has a cleaner 4 ft S swell with a NW offshore, but again, it’s just okay. The longest period we see comes on Thursday the 23rd afternoon – a glassy 2 ft SSE swell with an 18-second period, but it’s tiny, so that long period groundswell will just slide through without much punch at a beach break.

In short, if you want the best of the 16 days, you hit Saturday the 11th of July morning. After that, it’s a waiting game with a lot of small, messy, or just ordinary conditions. Don’t hold your breath for the second week.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Sat morning, min 10°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Tue morning, min 9°C on Tue night). Wind will be generally light.

Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Fri
17
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
2
2
1
1
1
1
0
0
0
0
0
0
0
2
0
3
1
0
0
0
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)
1.3
SE
9
1.1
SE
9
0.9
ESE
11
0.9
ESE
10
0.6
ESE
10
0.5
ESE
10
0.3
S
11
0.3
S
12
0.3
S
12
0.3
S
7
0.2
S
10
0.2
S
11
0.4
S
11
2.5
S
10
1.5
S
8
1.8
S
9
1.6
S
8
1.4
S
7
1
SSE
6
0.9
S
6
0.8
SSE
6
Wave Graph
Metric surfscale
Energy kJ
307
190
176
149
77
54
20
25
24
10
8
10
37
1155
317
528
307
198
85
52
40
Wind (km/h)
5
WNW
5
NW
10
NNE
15
NW
25
WNW
25
WNW
15
NW
20
W
20
W
15
NW
25
W
25
W
20
SW
20
SSW
15
S
15
SW
15
SSW
20
S
15
SSW
15
S
10
SSE
Wind State
off
off
cross
cross-off
off
off
off
cross-off
off
cross-off
off
cross-off
cross-off
cross
cross
cross-off
cross
cross-on
cross
cross
cross-on
High Tide
5:00AM1.03m
5:22PM1.60m
6:09AM1.05m
6:18PM1.70m
7:10AM1.09m
7:12PM1.77m
8:06AM1.12m
8:05PM1.81m
8:57AM1.15m
8:55PM1.80m
9:47AM1.18m
9:44PM1.74m
10:35AM1.20m
Low Tide
11:11PM0.27m
10:39AM0.31m
00:15AM0.15m
11:39AM0.29m
1:13AM0.04m
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
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:01
7:00
7:00
7:00
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:00
5:01
5:01
5:02
5:04
5:04
5:05
 mm
Temp °C
12
17
17
13
13
13
11
17
16
11
18
16
12
14
14
11
15
15
12
16
15
Feels °C
10
14
14
10
6
7
5
11
11
8
12
11
6
9
10
8
11
11
9
14
13
  • 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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