Weather in Sydney for September 2026
Until now, September 2026 in Sydney has been nearly identical to the historical average, with a temperature of 19.8 °C (showing only a slight deviation of 0 °C).
The forecast for the next days in Sydney predicts temperatures to be around 20 °C, close to the historical average.
In general, the average temperature in Sydney at the beginning of September is 19.7 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 19.7 °C by the end of September.
Sydney experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 45 mm.
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Sydney Weather September
Temperatures trend during September in Sydney
September weather in Sydney day by day
| 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. | Sunny | 19° /12° | 1.4 mm | 5 | |
| 4 Sept. |  Partly cloudy | 20° /12° | 1.5 mm | 5 | |
| 5 Sept. |  Patchy rain possible | 20° /12° | 1 mm | 5 | |
| 6 Sept. | Sunny | 19° /12° | 0.3 mm | 6 | |
| 7 Sept. | Patchy rain possible | 20° /11° | 0.6 mm | 6 | |
| 8 Sept. | Partly cloudy | 21° /13° | 1.4 mm | 6 | |
| 9 Sept. | Sunny | 21° /11° | 1.8 mm | 6 | |
| 10 Sept. | Patchy rain possible | 18° /11° | 4.6 mm | 5 | |
| 11 Sept. | Sunny | 20° /11° | 1.6 mm | 6 | |
| 12 Sept. | Sunny | 18° /13° | 0 mm | 6.9 | |
| 13 Sept. | Sunny | 18° /14° | 0 mm | 6.7 | |
| 14 Sept. | Sunny | 22° /15° | 0.1 mm | 6.2 | |
| 15 Sept. | Sunny | 19° /13° | 1.6 mm | 6.7 | |
| 16 Sept. | Patchy rain possible | 15° /12° | 3.8 mm | 4 | |
| 17 Sept. | Sunny | 17° /13° | 0.2 mm | 6 | |
| 18 Sept. | Sunny | 20° /14° | 0 mm | 6 | |
| 19 Sept. | Sunny | 26° /17° | 0 mm | 8 | |
| 20 Sept. | Sunny | 19° /17° | 0 mm | 6 | |
| 21 Sept. | Sunny | 23° /18° | 0 mm | 7 | |
| 22 Sept. | Sunny | 22° /18° | 0 mm | 7 | |
| 23 Sept. | Sunny | 25° /19° | 0 mm | 7 | |
| 24 Sept. |  Overcast | 22° /15° | 5.7 mm | 7 | |
| 25 Sept. | Patchy rain possible | 15° /12° | 0.7 mm | 5 | |
| 26 Sept. |  Moderate rain at times | 20° /13° | 6.5 mm | 5 | |
| 27 Sept. |  Cloudy | 20° /13° | 1.7 mm | 5 | |
| 28 Sept. | Patchy rain possible | 20° /14° | 2.2 mm | 5 | |
| 29 Sept. |  Heavy rain at times | 20° /14° | 2.7 mm | 6 | |
| 30 Sept. | Patchy rain possible | 21° /14° | 2.4 mm | 6 | |
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Sydney in September - FAQ
What are the expected maximum and minimum temperatures in Sydney during September?
How much rainfall should be expected in Sydney during September?
What are the typical wind conditions in Sydney during September?
Sydney water temperatures in September
The average water temperature of the Pacific Ocean near Sydney in September is 16.4 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Sydney in September?
- The average water temperature in Sydney in September is 16.4 °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
UV exposure in Sydney during September
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