Weather in Australia for September 2025
Until now, September 2025 in Australia has been nearly identical to the historical average, with a temperature of 19.9 °C (showing only a slight deviation of 0.2 °C).
The forecast for the next days in Australia predicts temperatures to be around 20 °C, close to the historical average.
In general, the average temperature in Australia at the beginning of September is 19.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.6 °C by the end of September.
Australia in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 45.3 mm.
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Australia Weather September
What’s the Weather Like in Australia This September?
Temperatures trend during September in Australia
September weather in Australia day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 20° /11° | 0.9 mm | 6 | |
| 2 Sept. | Sunny | 19° /11° | 0.2 mm | 6 | |
| 3 Sept. | Sunny | 18° /11° | 1.6 mm | 6 | |
| 4 Sept. |  Partly cloudy | 20° /12° | 1.8 mm | 6 | |
| 5 Sept. |  Patchy rain possible | 19° /12° | 1.2 mm | 5 | |
| 6 Sept. | Sunny | 19° /11° | 0.3 mm | 6 | |
| 7 Sept. | Partly cloudy | 21° /11° | 0.3 mm | 6 | |
| 8 Sept. | Partly cloudy | 22° /13° | 1.5 mm | 6 | |
| 9 Sept. | Sunny | 21° /12° | 2.1 mm | 6 | |
| 10 Sept. | Patchy rain possible | 19° /11° | 5.5 mm | 5 | |
| 11 Sept. | Sunny | 20° /11° | 1.6 mm | 6 | |
| 12 Sept. | Sunny | 20° /11° | 0.8 mm | 6 | |
| 13 Sept. |  Moderate rain at times | 17° /11° | 0.9 mm | 5 | |
| 14 Sept. | Sunny | 19° /10° | 0.4 mm | 6 | |
| 15 Sept. | Patchy rain possible | 19° /11° | 1.6 mm | 5 | |
| 16 Sept. | Sunny | 22° /12° | 0.7 mm | 7 | |
| 17 Sept. | Sunny | 22° /12° | 0.1 mm | 6 | |
| 18 Sept. | Patchy rain possible | 19° /13° | 0.3 mm | 1.3 | |
| 19 Sept. | Patchy rain possible | 22° /12° | 0.5 mm | 1.4 | |
| 20 Sept. | Patchy rain possible | 20° /13° | 1.4 mm | 1.4 | |
| 21 Sept. | Sunny | 21° /9° | 0 mm | 1.4 | |
| 22 Sept. | Sunny | 20° /11° | 0 mm | 1.5 | |
| 23 Sept. | Patchy rain possible | 15° /11° | 1.5 mm | 4 | |
| 24 Sept. | Sunny | 21° /9° | 0 mm | 5 | |
| 25 Sept. | Patchy rain possible | 16° /13° | 0.7 mm | 4 | |
| 26 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 27 Sept. | Sunny | 27° /15° | 0 mm | 7 | |
| 28 Sept. | Sunny | 22° /14° | 0 mm | 6 | |
| 29 Sept. | Sunny | 18° /11° | 0 mm | 5 | |
| 30 Sept. | Sunny | 19° /12° | 0 mm | 6 | |
| Next | |||||
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.
Australia in September - FAQ
Australia water temperatures in September
The average water temperature of the Pacific Ocean near Australia in September is 17.6 °C. At the beginning of September temperatures are around 17.5 °C; by the end of the month they get warmer and reach 18.8 °C.
- What is the water temperature in Australia in September?
- The average water temperature in Australia in September is 17.6 °C.
- Can you swim in Australia 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 Australia
UV exposure in Australia during September
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