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Weather in Sydney for September 2026

Your guide to Sydney weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Sydney is cooler than usual, with temperatures averaging 17.6 °C, this is 3 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Sydney with the forecast suggesting a temperature of 17.1 °C, lower than the historical average.

  • In general, the average temperature in Sydney at the beginning of September is 20.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.1 °C by the end of September.

    • Rain 🌧️

  • The climate of Sydney in September is notably wet, with an average of 13 rainy days, and a total of 106.2 mm of precipitation.

    • More

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

Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Sydney Weather September

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

Temperatures trend during September in Sydney

See the weather trend as well as the moving average line

September weather in Sydney day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Cloudy
Cloudy
 20° /11° 0.3 mm 4
2 Sept. Partly cloudy
Partly cloudy
 20° /10° 1.9 mm 4
3 Sept. Partly cloudy
Partly cloudy
 20° /11° 0.3 mm 4
4 Sept. Fog
Fog
 22° /12° 11.1 mm 4
5 Sept. Light drizzle
Light drizzle
 19° /13° 18.6 mm 4
6 Sept. Light rain shower
Light rain shower
 21° /14° 5.1 mm 4
7 Sept. Light rain shower
Light rain shower
 21° /16° 9.7 mm 4
8 Sept. Fog
Fog
 22° /15° 3.5 mm 5
9 Sept. Fog
Fog
 20° /12° 1.1 mm 4
10 Sept. Overcast
Overcast
 18° /9° 6.6 mm 0.8
11 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 1.4 mm 3.7
12 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 0.5 mm 3.2
13 Sept. Overcast
Overcast
 19° /7° 0 mm 4.7
14 Sept. Light rain shower
Light rain shower
 21° /12° 4.3 mm 1.2
15 Sept. Sunny
Sunny
 16° /10° 0 mm 5
16 Sept. Partly cloudy
Partly cloudy
 20° /9° 0 mm 6
17 Sept. Light rain shower
Light rain shower
 17° /14° 8.6 mm 5
18 Sept. Sunny
Sunny
 17° /9° 15.4 mm 5
19 Sept. Sunny
Sunny
 18° /7° 0 mm 5
20 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 0 mm 3
21 Sept. Sunny
Sunny
 15° /7° 0 mm 4
22 Sept. Cloudy
Cloudy
 16° /6° 0 mm 4
23 Sept. Overcast
Overcast
 17° /8° 2.7 mm 5
24 Sept. Overcast
Overcast
 17° /11° 0 mm 4
25 Sept. Light rain shower
Light rain shower
 16° /8° 0.2 mm 4
26 Sept. Overcast
Overcast
 17° /9° 17.6 mm 4
27 Sept. Overcast
Overcast
 17° /9° 8.7 mm 4
28 Sept. Fog
Fog
 18° /9° 30.5 mm 4
29 Sept. Mist
Mist
 18° /10° 0 mm 4
30 Sept. Mist
Mist
 17° /9° 0 mm 4
Next
Important Notice
Our weather forecast for 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 Sydney forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Sydney in September - FAQ

What are the expected maximum and minimum temperatures in Sydney during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Sydney during September?
Significant rainfall exceeding 106.2 mm is expected in Sydney during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Sydney during September?
The average wind speed in Sydney during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Sydney

Explore the daily rainfall trends and prepare for Sydneys September weather 💧
Typically, Sydney has 13 rainy days in September with a total of 106.2 mm of rainfall.

UV exposure in 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 Sydney, located at latitude 46.135 and longitude -60.183. Stay updated with localized weather information tailored for Sydney.

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