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Australia weather

Weather in City of Sydney for September 2025

Your guide to City of Sydney weather in September - trends and predictions

    Temperatures

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

  • The forecast for the next days in City of Sydney predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in City of Sydney at the beginning of September is 20.6 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 20.4 °C by the end of September.

    • Rain 🌧️

  • City of Sydney experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 29.1 mm.

    • More

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

Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/11°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
56 %
Avg humidity

City of Sydney Weather September

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

Temperatures trend during September in City of Sydney

See the weather trend as well as the moving average line

September weather in City of Sydney 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
 20° /10° 1 mm 6
2 Sept. Overcast
Overcast
 19° /10° 0.1 mm 6
3 Sept. Sunny
Sunny
 18° /8° 0 mm 6
4 Sept. Partly cloudy
Partly cloudy
 21° /9° 0 mm 7
5 Sept. Moderate rain at times
Moderate rain at times
 21° /11° 0.6 mm 6
6 Sept. Sunny
Sunny
 22° /12° 0 mm 6
7 Sept. Partly cloudy
Partly cloudy
 23° /12° 0.1 mm 7
8 Sept. Light rain shower
Light rain shower
 24° /13° 1.9 mm 7
9 Sept. Sunny
Sunny
 21° /11° 0.7 mm 6
10 Sept. Sunny
Sunny
 18° /9° 9.4 mm 5
11 Sept. Sunny
Sunny
 18° /10° 2.6 mm 6
12 Sept. Partly cloudy
Partly cloudy
 18° /10° 1.5 mm 6
13 Sept. Sunny
Sunny
 18° /10° 0.3 mm 6
14 Sept. Sunny
Sunny
 21° /9° 0.1 mm 7
15 Sept. Overcast
Overcast
 20° /10° 0.3 mm 6
16 Sept. Sunny
Sunny
 26° /16° 0 mm 1.3
17 Sept. Sunny
Sunny
 23° /14° 0 mm 1.4
18 Sept. Sunny
Sunny
 20° /11° 0 mm 1.6
19 Sept. Patchy rain possible
Patchy rain possible
 22° /11° 0.3 mm 1.5
20 Sept. Sunny
Sunny
 24° /14° 0 mm 6
21 Sept. Sunny
Sunny
 20° /11° 0 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 0.2 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 0.3 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 0.8 mm 5
25 Sept. Sunny
Sunny
 21° /12° 0 mm 6
26 Sept. Sunny
Sunny
 27° /12° 0 mm 6
27 Sept. Sunny
Sunny
 22° /13° 0 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 0.3 mm 4
29 Sept. Moderate rain
Moderate rain
 15° /9° 8.6 mm 4
30 Sept. Sunny
Sunny
 21° /13° 2.1 mm 7
Next
Important Notice
Our weather forecast for City of Sydney 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 City of Sydney forecast closer to your planned date for the most up-to-date weather information.
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City of Sydney in September - FAQ

What are the expected maximum and minimum temperatures in City of Sydney during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in City of Sydney during September?
In September, City of Sydney can expect light to moderate rainfall, totaling 29.1 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in City of Sydney during September?
The average wind speed in City of Sydney during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in City of Sydney

Explore the daily rainfall trends and prepare for City of Sydneys September weather 💧

UV exposure in City of Sydney during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for City of Sydney, located at latitude -33.744 and longitude 151.142. Stay updated with localized weather information tailored for City of Sydney.

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