Weather in Australia for September 2025
In general, the average temperature in Australia at the beginning of September is 18.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.1 °C by the end of September.
Australia sees moderate rainfall in September, averaging 10 rainy days.
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Australia in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  17° | 3  18° | 4  20° | 5 17° | 6 22° | 7 20° |
| 8 14° | 9 15° | 10 17° | 11  18° | 12 18° | 13 19° | 14 18° |
| 15 18° | 16 18° | 17  20° | 18  20° | 19 20° | 20 15° | 21 15° |
| 22 17° | 23 20° | 24 23° | 25 19° | 26 15° | 27 16° | 28 23° |
| 29 21° | 30 24° |
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Temperatures trend during September in Australia
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 15° /9° | 0.6 mm | 4 | |
| 2 Sept. | Partly cloudy | 17° /6° | 1.7 mm | 5 | |
| 3 Sept. | Sunny | 18° /6° | 0 mm | 5 | |
| 4 Sept. | Light rain | 20° /7° | 5.4 mm | 5 | |
| 5 Sept. | Patchy rain possible | 17° /9° | 0.5 mm | 5 | |
| 6 Sept. | Partly cloudy | 22° /8° | 0.9 mm | 6 | |
| 7 Sept. | Patchy light drizzle | 20° /8° | 6.8 mm | 6 | |
| 8 Sept. | Light rain shower | 14° /7° | 3.8 mm | 4 | |
| 9 Sept. | Light rain shower | 15° /7° | 0.5 mm | 4 | |
| 10 Sept. | Patchy rain possible | 17° /7° | 0.5 mm | 5 | |
| 11 Sept. | Overcast | 18° /8° | 7.3 mm | 5 | |
| 12 Sept. | Partly cloudy | 18° /7° | 0 mm | 5 | |
| 13 Sept. | Overcast | 19° /7° | 0 mm | 5 | |
| 14 Sept. | Partly cloudy | 18° /9° | 2.2 mm | 5 | |
| 15 Sept. | Partly cloudy | 18° /9° | 0.1 mm | 5 | |
| 16 Sept. | Sunny | 18° /8° | 0.2 mm | 5 | |
| 17 Sept. | Cloudy | 20° /8° | 0 mm | 5 | |
| 18 Sept. | Thundery outbreaks possible | 20° /8° | 0.1 mm | 5 | |
| 19 Sept. | Overcast | 20° /10° | 2.2 mm | 5 | |
| 20 Sept. | Light rain shower | 15° /8° | 2 mm | 4 | |
| 21 Sept. | Patchy rain possible | 15° /7° | 0.6 mm | 4 | |
| 22 Sept. | Sunny | 17° /7° | 0.1 mm | 5 | |
| 23 Sept. | Overcast | 20° /6° | 0 mm | 5 | |
| 24 Sept. | Sunny | 23° /8° | 0 mm | 6 | |
| 25 Sept. | Light rain shower | 19° /9° | 6.7 mm | 5 | |
| 26 Sept. | Cloudy | 15° /6° | 0.2 mm | 4 | |
| 27 Sept. | Partly cloudy | 16° /5° | 0 mm | 6 | |
| 28 Sept. | Sunny | 23° /6° | 0 mm | 7 | |
| 29 Sept. | Sunny | 21° /8° | 1 mm | 6 | |
| 30 Sept. | Sunny | 24° /9° | 0 mm | 6 | |
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Guide for Australia in September
In September, Australia experiences a transition from winter to spring, resulting in varied weather conditions across the country. At the beginning of the month, southern regions such as Melbourne and Sydney typically have cool temperatures with occasional rainfall.
In Melbourne, temperatures can range from 8° to 16°, while Sydney may experience slightly milder conditions with temperatures around 12° to 20°.
The southern parts of the country may still have some chilly days, especially in the evenings, making it important for travelers to pack layers and a light jacket.
As the month progresses, the weather in Australia starts to warm up, particularly in the northern regions.
Cities like Brisbane and Darwin begin to see warmer temperatures, with Brisbane experiencing averages of 15° to 25° and Darwin having consistently warm weather with temperatures ranging from 24° to 33°. These regions also tend to have lower chances of rainfall compared to the southern areas.
Overall, September in Australia offers a mix of cool and warm weather, making it an ideal time to explore the diverse landscapes and outdoor activities that the country has to offer.
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Australia in September - FAQ
September rainfall patterns in Australia
UV exposure in Australia during September
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