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Surf Forecasts:

Thirroul surf break

Thirroul surfForecast / NSW – Illawarra / Australia

information circle12 Day Weather and Surf, issued 9 pm Tuesday 19 Aug 2025 AEST
Forecast update in hr  min  s Forecast update imminent
Thirroul surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Thirroul sea temperature is
19.7° C
 (Which is 2.3°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Thirroul this week:

The surf forecast for Thirroul over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 22) at 1PM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 0.2m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Thirroul in the next 12 days are 3.0m 9s and forecast to arrive on Friday (Aug 22) at 7AM. 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 3s period and expected on Saturday (Aug 23) at 1AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Fri 22nd Aug)6ft (1.9m) 8s
Best Surf 4PM (Fri 22nd Aug)7ft (2.1m) 8s
Most Powerful 7AM (Fri 22nd Aug)10ft (3.0m) 9s

Table - best surf conditions forecast for Thirroul over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 73mm), heaviest during Thu morning. Very mild (max 17°C on Fri afternoon, min 13°C on Tue night). Mainly fresh winds.

Days 3-6 Weather Summary Some drizzle, heaviest during Fri night. Very mild (max 18°C on Mon morning, min 11°C on Sun night). Wind will be generally light.

Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tue
26
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
1
0
2
3
2
0
0
1
0
0
1
2
0
1
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
S
1.4
SE
0.9
SSE
1.7
E
2.2
E
2.2
E
2.5
ENE
2.5
ENE
2.1
ENE
1.6
ENE
1.3
ENE
1.2
ENE
1
ENE
1
ENE
0.9
ENE
0.9
ENE
0.9
ENE
0.8
ENE
0.8
ENE
0.7
ENE
0.6
ENE
Period(s) (?)111010678888888888888888
Wave
Graph
(?)Metric surfscale
Energy (?)449422259311518749101116339163542452291882911791652521451379389
Wind
(km/h)
10
E
20
E
20
E
20
E
25
ENE
15
ENE
25
NE
15
NNE
0
ENE
10
W
20
SSW
20
SSW
10
SW
15
S
20
SSE
10
WSW
5
NW
10
ESE
5
W
5
NW
15
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononcross-
on		cross-
on		cross-
on		cross-
on		crossglassoffcrosscrosscross-
off		crosscross-
on		cross-
off		glassoncross-
off		glasscross
High Tide
/ height (m)
6:04AM
1.00
6:02PM
1.57
6:55AM
1.06
6:52PM
1.61
7:38AM
1.12
7:36PM
1.62
8:17AM
1.18
8:16PM
1.59
8:53AM
1.23
8:54PM
1.53
9:29AM
1.27
9:31PM
1.44
10:03AM
1.29
Low Tide
/ height (m)
12:06AM
0.19
11:26AM
0.40
12:56AM
0.13
12:21PM
0.34
1:39AM
0.09
1:10PM
0.30
2:17AM
0.08
1:55PM
0.27
2:51AM
0.09
2:38PM
0.26
3:23AM
0.12
3:19PM
0.27
3:53AM
0.17
4:01PM
0.30
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tue
26
Sunrise-6:31--6:30--6:28--6:26--6:26--6:24--6:22-
Sunset--5:28--5:29--5:30--5:30--5:30--5:31--5:32
rain showers
light rain
light rain
mod rain
heavy rain
mod rain
heavy rain
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
912912925331-----------
Temp. °C141615161615151617141615131615131817131919
Feels °C (?)111211111113111418121212111211111615121616
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for NSW - Illawarra

  1. weather stationWind Update Previously calm conditions have become cross-shore at Thirroul (light winds from the S at FlyStanwell 13 km from Thirroul). 1.8m 9s swell from the SSE with a 0.5m 11s groundswell, also from the SSE and a 0.4m 10s swell, also from the E. 3 swells combining so expect closeout sets.

    1 hour 23 minutes ago Thirroul
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<
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1 h 23 min ago

19 km/h
S
Cross-Shore
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Thirroul surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Thirroul at:
surf-forecast.com

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 12 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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