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 19.1 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 19.6 °C by the end of September.
Sydney in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 45.3 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
20°/12°
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 17° | 4  19° | 5  20° | 6 19° | 7 20° |
| 8 21° | 9 21° | 10 19° | 11 21° | 12  21° | 13  16° | 14 18° |
| 15 18° | 16 21° | 17 22° | 18 24° | 19 24° | 20 25° | 21 20° |
| 22 19° | 23 21° | 24 21° | 25  21° | 26 18° | 27 18° | 28 19° |
| 29  20° | 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. | Sunny | 20° /12° | 1 mm | 6 | |
| 2 Sept. | Sunny | 19° /12° | 0.1 mm | 6 | |
| 3 Sept. | Sunny | 17° /11° | 2 mm | 6 | |
| 4 Sept. | Partly cloudy | 19° /12° | 2.2 mm | 6 | |
| 5 Sept. | Patchy rain possible | 20° /11° | 1.5 mm | 6 | |
| 6 Sept. | Sunny | 19° /11° | 0.4 mm | 6 | |
| 7 Sept. | Patchy rain possible | 20° /11° | 0.3 mm | 6 | |
| 8 Sept. | Partly cloudy | 21° /12° | 1.7 mm | 6 | |
| 9 Sept. | Sunny | 21° /11° | 2.1 mm | 7 | |
| 10 Sept. | Patchy rain possible | 19° /11° | 0.3 mm | 6 | |
| 11 Sept. | Sunny | 21° /11° | 0 mm | 7 | |
| 12 Sept. | Cloudy | 21° /12° | 1 mm | 6 | |
| 13 Sept. | Moderate rain at times | 16° /11° | 1.2 mm | 5 | |
| 14 Sept. | Sunny | 18° /10° | 0.5 mm | 6 | |
| 15 Sept. | Patchy rain possible | 18° /10° | 2.1 mm | 5 | |
| 16 Sept. | Sunny | 21° /12° | 0.9 mm | 6 | |
| 17 Sept. | Sunny | 22° /12° | 0.1 mm | 6 | |
| 18 Sept. | Sunny | 24° /13° | 0.1 mm | 7 | |
| 19 Sept. | Sunny | 24° /13° | 0 mm | 7 | |
| 20 Sept. | Sunny | 25° /13° | 0 mm | 8 | |
| 21 Sept. | Moderate rain at times | 20° /13° | 1.6 mm | 6 | |
| 22 Sept. | Partly cloudy | 19° /12° | 3 mm | 5 | |
| 23 Sept. | Sunny | 21° /12° | 1.4 mm | 6 | |
| 24 Sept. | Partly cloudy | 21° /12° | 2.8 mm | 6 | |
| 25 Sept. | Overcast | 21° /12° | 0.1 mm | 6 | |
| 26 Sept. | Moderate rain at times | 18° /12° | 8.2 mm | 5 | |
| 27 Sept. | Cloudy | 18° /13° | 2.1 mm | 5 | |
| 28 Sept. | Patchy rain possible | 19° /13° | 2.8 mm | 5 | |
| 29 Sept. | Heavy rain at times | 20° /14° | 2.9 mm | 6 | |
| 30 Sept. | Patchy rain possible | 20° /14° | 3 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 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sydney during September?
In September, Sydney can expect light to moderate rainfall, totaling 45.3 mm across approximately 19 days. Occasional showers are possible, and planning ahead for them could be helpful.
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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