Sydney
September
Weather in Sydney for September 2025
Your guide to Sydney weather in September - trends and predictions
In general, the average temperature in Sydney at the beginning of September is 19.9 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 20 °C by the end of September.
Sydney sees moderate rainfall in September, averaging 7 rainy days.
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23
Dry days
7
Rainy days
0
Snow days
20°/13°
Temperatures
24 km/h
Avg max wind
62 %
Avg humidity
Sydney in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  19° | 3  15° | 4 19° | 5  22° | 6  23° | 7 21° |
| 8  22° | 9 19° | 10 17° | 11 19° | 12  18° | 13 17° | 14 20° |
| 15 19° | 16 22° | 17 23° | 18 25° | 19 26° | 20 26° | 21 21° |
| 22 19° | 23 21° | 24 20° | 25 24° | 26  19° | 27 17° | 28 18° |
| 29 22° | 30 20° |
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Temperatures trend during September in Sydney
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 20° /12° | 1.2 mm | 6 | |
| 2 Sept. | Overcast | 19° /11° | 0.1 mm | 6 | |
| 3 Sept. | Partly cloudy | 15° /10° | 0 mm | 5 | |
| 4 Sept. | Partly cloudy | 19° /9° | 0 mm | 6 | |
| 5 Sept. | Moderate rain at times | 22° /12° | 0.6 mm | 6 | |
| 6 Sept. | Sunny | 23° /12° | 0 mm | 7 | |
| 7 Sept. | Partly cloudy | 21° /13° | 0.2 mm | 6 | |
| 8 Sept. | Patchy light rain | 22° /12° | 3.4 mm | 6 | |
| 9 Sept. | Sunny | 19° /11° | 0 mm | 6 | |
| 10 Sept. | Sunny | 17° /10° | 0.1 mm | 5 | |
| 11 Sept. | Sunny | 19° /11° | 0.1 mm | 6 | |
| 12 Sept. | Cloudy | 18° /12° | 2 mm | 5 | |
| 13 Sept. | Sunny | 17° /11° | 0.6 mm | 5 | |
| 14 Sept. | Sunny | 20° /11° | 0.1 mm | 7 | |
| 15 Sept. | Overcast | 19° /11° | 0.6 mm | 5 | |
| 16 Sept. | Sunny | 22° /12° | 0.1 mm | 7 | |
| 17 Sept. | Sunny | 23° /13° | 0 mm | 7 | |
| 18 Sept. | Sunny | 25° /12° | 0 mm | 7 | |
| 19 Sept. | Sunny | 26° /15° | 0 mm | 7 | |
| 20 Sept. | Sunny | 26° /15° | 0 mm | 8 | |
| 21 Sept. | Patchy rain possible | 21° /13° | 0.1 mm | 6 | |
| 22 Sept. | Light rain shower | 19° /13° | 0.4 mm | 5 | |
| 23 Sept. | Patchy rain possible | 21° /12° | 0.1 mm | 6 | |
| 24 Sept. | Partly cloudy | 20° /12° | 0 mm | 6 | |
| 25 Sept. | Sunny | 24° /13° | 0.1 mm | 7 | |
| 26 Sept. | Thundery outbreaks possible | 19° /13° | 14.4 mm | 5 | |
| 27 Sept. | Thundery outbreaks possible | 17° /13° | 2.1 mm | 5 | |
| 28 Sept. | Patchy rain possible | 18° /14° | 0.9 mm | 5 | |
| 29 Sept. | Sunny | 22° /14° | 0.8 mm | 6 | |
| 30 Sept. | Sunny | 20° /14° | 2.2 mm | 6 | |
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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.
Sydney in September - FAQ
What are the expected maximum and minimum temperatures in Sydney during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sydney during September?
Expect minimal rainfall in Sydney during September, with a total of 14.3 mm over approximately 7 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Sydney during September?
The average wind speed in Sydney during September is 24 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 💧
UV exposure in Sydney during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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