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Wollongong
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Australia weather

Weather in Wollongong for September 2025

Your guide to Wollongong weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Wollongong is slightly cooler than the historical average by -0.9 °C.

  • The forecast for the upcoming days in Wollongong predicts a temperature of 21.4 °C, which is slightly above the historical average.

  • In general, the average temperature in Wollongong at the beginning of September is 19.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.6 °C by the end of September.

    • Rain 🌧️

  • Wollongong experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 25.6 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/10°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
60 %
Avg humidity

Wollongong Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
18°
2
Partly cloudy
18°
3
Sunny
17°
4
Sunny
20°
5
Patchy rain possible
20°
6
Sunny
21°
7
Partly cloudy
22°
8
Moderate rain at times
23°
9
Sunny
20°
10
Sunny
16°
11
Sunny
18°
12
Cloudy
17°
13
Sunny
17°
14
Sunny
21°
15
Sunny
23°
16
Sunny
25°
17
Sunny
21°
18
Sunny
18°
19
Patchy rain possible
22°
20
Sunny
19°
21
Sunny
19°
22
Sunny
21°
23
Patchy rain possible
17°
24
Sunny
19°
25
Sunny
21°
26
Patchy rain possible
21°
27
Sunny
25°
28
Sunny
29°
29
Sunny
22°
30
Sunny
21°

Temperatures trend during September in Wollongong

See the weather trend as well as the moving average line

September weather in Wollongong day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 18° /9° 1 mm 5
2 Sept. Partly cloudy
Partly cloudy
 18° /8° 1.3 mm 6
3 Sept. Sunny
Sunny
 17° /7° 0 mm 6
4 Sept. Sunny
Sunny
 20° /8° 0 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 20° /10° 0.3 mm 5
6 Sept. Sunny
Sunny
 21° /9° 0 mm 6
7 Sept. Partly cloudy
Partly cloudy
 22° /10° 0.1 mm 6
8 Sept. Moderate rain at times
Moderate rain at times
 23° /10° 4.5 mm 6
9 Sept. Sunny
Sunny
 20° /10° 0.4 mm 6
10 Sept. Sunny
Sunny
 16° /8° 11.6 mm 5
11 Sept. Sunny
Sunny
 18° /9° 3.5 mm 5
12 Sept. Cloudy
Cloudy
 17° /9° 1 mm 5
13 Sept. Sunny
Sunny
 17° /8° 0.1 mm 5
14 Sept. Sunny
Sunny
 21° /9° 0.2 mm 6
15 Sept. Sunny
Sunny
 23° /13° 0 mm 1.4
16 Sept. Sunny
Sunny
 25° /16° 0 mm 1.2
17 Sept. Sunny
Sunny
 21° /14° 0 mm 1.4
18 Sept. Sunny
Sunny
 18° /10° 0 mm 1.5
19 Sept. Patchy rain possible
Patchy rain possible
 22° /12° 0.5 mm 1.3
20 Sept. Sunny
Sunny
 19° /12° 0 mm 6
21 Sept. Sunny
Sunny
 19° /12° 0 mm 5
22 Sept. Sunny
Sunny
 21° /12° 0 mm 6
23 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.1 mm 4
24 Sept. Sunny
Sunny
 19° /11° 0 mm 5
25 Sept. Sunny
Sunny
 21° /10° 0 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 0.1 mm 5
27 Sept. Sunny
Sunny
 25° /12° 0 mm 6
28 Sept. Sunny
Sunny
 29° /17° 0 mm 7
29 Sept. Sunny
Sunny
 22° /12° 0.3 mm 6
30 Sept. Sunny
Sunny
 21° /11° 1.6 mm 6
Next
Important Notice
Our weather forecast for Wollongong in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Wollongong forecast closer to your planned date for the most up-to-date weather information.
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Wollongong in September - FAQ

What are the expected maximum and minimum temperatures in Wollongong during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Wollongong during September?
In September, Wollongong can expect light to moderate rainfall, totaling 25.6 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Wollongong during September?
The average wind speed in Wollongong during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Wollongong

Explore the daily rainfall trends and prepare for Wollongongs September weather 💧

UV exposure in Wollongong during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Wollongong?

Get accurate weather forecasts for Wollongong, located at latitude -34.424 and longitude 150.893. Stay updated with localized weather information tailored for Wollongong.

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