Thirroul surf break

Thirroul surfForecast / NSW – Illawarra / Australia

information circle16 Day Weather and Surf, issued 3 am Thursday 28 May 2026 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
20.7° C
(Which is 1.3°C warmer than normal for this time of year)

Thirroul surf forecast from 27 May 2026:

  • Best quality surf: Friday 29 May, 10PM (local time) - 5ft (1.5m), 10s period, E swell with cross-offshore winds.
  • Most powerful swell: Thursday 28 May, 10AM (local time) - 5.5ft (1.7m), 11s period, E swell with 701 kJ wave energy.
  • Next surfable swell (1★+): Friday 29 May, 10PM (local time) - 5ft (1.5m), 10s period with E 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 Friday (May 29) at 10PM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 1.4m and 7s. Another secondary swell of 1.7m and 7s 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 1.7m 11s and forecast to arrive on Thursday (May 28) 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 1.2m 5s period and expected on Wednesday (Jun 03) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Fri 29th May)5ft (1.5m) 10s
Best Surf10PM (Fri 29th May)5ft (1.5m) 10s
Most Powerful10AM (Thu 28th May)5.5ft (1.7m) 11s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Thu night. Warm (max 20°C on Sat morning, min 13°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Tue morning. Very mild (max 17°C on Sun morning, min 10°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun afternoon, calm by Mon morning).

Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
1
3
2
2
2
1
0
0
1
0
1
1
0
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
E
11
1.7
E
11
1.6
E
10
1.5
E
10
1.5
E
10
1.5
E
10
1.4
E
10
1.5
S
8
1
E
10
1
E
10
0.9
E
10
0.7
E
10
0.7
E
9
0.7
E
9
0.7
E
10
0.7
E
9
0.6
E
9
0.5
E
9
0.6
E
10
0.5
E
10
0.9
S
8
Wave Graph
Metric surfscale
Energy kJ
701
651
553
434
432
443
386
295
186
204
156
87
83
81
87
81
59
38
69
47
100
Wind (km/h)
20
SSW
25
SSW
30
S
30
SSW
25
SSW
15
WSW
15
W
20
W
20
W
20
W
25
WSW
20
WSW
5
W
10
NNE
10
W
10
NW
25
N
10
NW
15
WNW
25
W
25
W
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross
off
cross-off
cross-off
cross-off
off
cross-off
cross-off
High Tide
6:22PM1.44m
6:48AM1.04m
6:57PM1.48m
7:32AM1.03m
7:32PM1.51m
8:13AM1.02m
8:09PM1.52m
8:54AM1.01m
8:46PM1.52m
9:34AM0.99m
9:25PM1.50m
10:16AM0.98m
10:04PM1.47m
Low Tide
11:48AM0.34m
1:00AM0.29m
12:24PM0.36m
1:41AM0.24m
1:00PM0.38m
2:20AM0.21m
1:37PM0.39m
2:59AM0.20m
2:14PM0.41m
3:39AM0.20m
2:52PM0.43m
4:20AM0.22m
3:31PM0.45m
part cloud
light rain
light rain
light rain
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
light rain
rain showers
part cloud
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:52
6:52
6:52
6:52
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:54
4:54
4:54
4:53
4:53
4:53
4:53
1
5
1
1
2
1
Temp °C
19
19
19
19
19
16
20
19
15
17
15
13
17
17
12
12
13
13
16
16
15
16
16
17
15
16
13
17
14
11
11
9
7
15
14
9
10
9
11
11
11
10
Swell 1
Height (m)
Direction
Period (s)
1.7
E
11
1.7
E
11
1.6
E
10
1.5
E
10
1.5
E
10
1.5
E
10
1.5
S
8
1.5
S
8
1.1
S
8
1
E
10
0.9
E
10
0.7
E
10
0.7
E
9
0.7
E
9
0.7
E
10
0.7
E
9
0.6
E
9
0.5
NE
6
0.6
E
10
0.5
E
10
0.9
S
8
Energy kJ
701
651
553
434
432
443
272
295
152
204
156
87
83
81
87
81
59
15
69
47
100
Swell 2
Height (m)
Direction
Period (s)
0.5
S
8
0.2
S
16
0.2
S
15
0.1
S
17
1.4
SSE
7
1.4
E
10
1.2
E
10
1
E
10
0.9
S
8
0.6
S
8
0.5
S
6
0.6
S
7
0.6
S
7
0.5
S
7
0.3
S
6
0.2
S
7
0.5
E
9
0.3
NE
7
0.3
NE
7
0.5
E
11
Energy kJ
35
21
18
6
214
386
273
186
102
40
17
34
35
21
7
4
38
7
9
60
Swell 3
Height (m)
Direction
Period (s)
0.1
S
14
0.2
S
11
0.1
S
16
0.1
S
14
0.1
S
13
0.1
S
11
0.3
S
10
0.3
S
9
0.3
S
10
0.3
SW
3
0.1
S
13
0.1
S
12
0.3
E
11
0.2
S
11
0.1
S
10
0.1
NE
7
Energy kJ
4
10
5
4
4
2
16
14
18
2
3
3
21
9
2
2
Wind waves
Height (m)
Direction
Period (s)
0.8
SSW
4
1.3
S
5
1.5
S
6
1.9
S
7
1.7
S
7
1.8
S
7
0.3
WSW
3
0.7
W
4
0.5
WSW
3
0.5
WSW
3
0.6
WSW
4
0.2
WSW
3
0.2
NNW
3
0.7
N
4
1
N
5
0.4
NNW
3
0.6
W
3
1
WSW
4
1.2
WSW
5
Energy kJ
16
83
181
331
311
339
1
14
6
7
11
1
1
13
59
4
7
34
59
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
2
2
4
3
3
2
2
2
1
1
1
1
1
1
1
1
1
1
Distance (km)
5
11
48
118
11
2
2
2
0
2
82
2
0
2
0
0
51
0
0
7
38
Best forecast wave conditions in Illawarra
Rating
(10 max)
3
3
3
2
4
3
3
2
2
1
1
2
1
1
1
1
1
1
1
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
3
2
3
4
4
3
2
2
2
2
4
4
3
3
4
5
3
1
1
Header Global
Rating
(10 max)
6
9
9
6
5
4
5
5
5
7
7
6
5
4
4
4
5
6
4
4
4
  • 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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