Sydney
September
Weather in Sydney for September 2027
Your guide to Sydney weather in September - trends and predictions
In general, the average temperature in Sydney at the beginning of September is 19.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20 °C by the end of September.
Sydney experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 41.6 mm.
Is September a good time to visit Sydney? check out the best time to travel to Sydney page.
✨ Is September a good time to visit Sydney? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
20°/12°
Temperatures
25 km/h
Avg max wind
63 %
Avg humidity
Sydney Weather September
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Temperatures trend during September in Sydney
See the weather trend as well as the moving average line
September weather in Sydney day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 20° /12° | 0.8 mm | 5 | |
| 2 Sept. | Sunny | 20° /12° | 0.1 mm | 5 | |
| 3 Sept. |  Patchy rain possible | 19° /12° | 1.4 mm | 5 | |
| 4 Sept. | Patchy rain possible | 19° /13° | 1.5 mm | 5 | |
| 5 Sept. | Patchy rain possible | 20° /13° | 1 mm | 5 | |
| 6 Sept. | Sunny | 19° /12° | 0.3 mm | 6 | |
| 7 Sept. | Patchy rain possible | 20° /12° | 0.6 mm | 6 | |
| 8 Sept. | Patchy rain possible | 21° /13° | 1.4 mm | 6 | |
| 9 Sept. | Patchy rain possible | 20° /12° | 1.8 mm | 6 | |
| 10 Sept. |  Light rain | 18° /12° | 4.6 mm | 5 | |
| 11 Sept. | Patchy rain possible | 19° /11° | 1.3 mm | 6 | |
| 12 Sept. | Sunny | 19° /11° | 0.7 mm | 5 | |
| 13 Sept. | Patchy rain possible | 17° /12° | 0.8 mm | 5 | |
| 14 Sept. | Sunny | 19° /11° | 0.3 mm | 6 | |
| 15 Sept. | Patchy rain possible | 19° /11° | 1.4 mm | 5 | |
| 16 Sept. | Sunny | 20° /12° | 0.6 mm | 6 | |
| 17 Sept. | Sunny | 20° /12° | 0.1 mm | 6 | |
| 18 Sept. | Sunny | 22° /12° | 0 mm | 6 | |
| 19 Sept. | Sunny | 24° /13° | 0.1 mm | 7 | |
| 20 Sept. | Sunny | 24° /14° | 0 mm | 7 | |
| 21 Sept. | Patchy rain possible | 21° /13° | 1.3 mm | 6 | |
| 22 Sept. | Light rain | 18° /13° | 3.9 mm | 5 | |
| 23 Sept. | Patchy rain possible | 20° /13° | 1.9 mm | 5 | |
| 24 Sept. | Patchy rain possible | 21° /13° | 1.9 mm | 6 | |
| 25 Sept. |  Overcast | 21° /13° | 0 mm | 6 | |
| 26 Sept. |  Moderate rain at times | 21° /14° | 5.5 mm | 5 | |
| 27 Sept. | Patchy rain possible | 19° /14° | 2.1 mm | 5 | |
| 28 Sept. | Patchy rain possible | 19° /14° | 2 mm | 5 | |
| 29 Sept. | Patchy rain possible | 20° /14° | 2.3 mm | 6 | |
| 30 Sept. | Patchy rain possible | 21° /14° | 2 mm | 6 | |
| 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
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 41.6 mm across approximately 8 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 25 km/h, suggesting breezy to windy conditions, depending on your activities.
Sydney water temperatures in September
The average water temperature of the Pacific Ocean near Sydney in September is 16.5 °C. At the beginning of September temperatures are around 16.3 °C; by the end of the month they stay fairly steady and reach 16.7 °C.
- What is the water temperature in Sydney in September?
- The average water temperature in Sydney in September is 16.5 °C.
- Can you swim in Sydney in September?
- Brisk: quick dips and active swimming are fine, but pack a 2–3 mm spring suit if you plan longer sessions or early-morning outings.
September rainfall patterns in Sydney
Explore the daily rainfall trends and prepare for Sydneys September weather 💧
Typically, Sydney has 8 rainy days in September with a total of 41.6 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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