Perth
September
Weather in Perth for September 2026
Your guide to Perth weather in September - trends and predictions
Until now, September 2026 in Perth is slightly cooler than the historical average by 0.6 °C.
The forecast for the next days in Perth predicts temperatures to be around 19 °C, close to the historical average.
In general, the average temperature in Perth at the beginning of September is 18.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.4 °C by the end of September.
Perth in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 57.7 mm.
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Temperatures
Rain 🌧️
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14
Dry days
16
Rainy days
0
Snow days
20°/11°
Temperatures
21 km/h
Avg max wind
64 %
Avg humidity
Perth Weather September
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Temperatures trend during September in Perth
See the weather trend as well as the moving average line
September weather in Perth day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 19° /11° | 1.7 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 18° /11° | 2 mm | 5 | |
| 3 Sept. | Patchy rain possible | 17° /10° | 4.8 mm | 4 | |
| 4 Sept. | Patchy rain possible | 18° /11° | 3.2 mm | 5 | |
| 5 Sept. | Light rain shower | 17° /10° | 9.8 mm | 5 | |
| 6 Sept. | Sunny | 18° /10° | 4.4 mm | 5 | |
| 7 Sept. | Sunny | 20° /10° | 1.4 mm | 6 | |
| 8 Sept. |  Overcast | 19° /10° | 0.2 mm | 6 | |
| 9 Sept. |  Moderate or heavy rain shower | 19° /10° | 2.6 mm | 6 | |
| 10 Sept. |  Partly cloudy | 20° /9° | 0.1 mm | 6 | |
| 11 Sept. | Sunny | 21° /10° | 0.1 mm | 7 | |
| 12 Sept. | Sunny | 18° /16° | 3.1 mm | 7.3 | |
| 13 Sept. | Patchy rain possible | 17° /16° | 0.4 mm | 6.4 | |
| 14 Sept. | Sunny | 21° /14° | 0 mm | 7.5 | |
| 15 Sept. | Sunny | 23° /15° | 1.2 mm | 7.5 | |
| 16 Sept. | Sunny | 26° /18° | 2.2 mm | 8 | |
| 17 Sept. | Patchy rain possible | 19° /18° | 0.1 mm | 5 | |
| 18 Sept. | Patchy rain possible | 18° /12° | 3.7 mm | 4 | |
| 19 Sept. | Sunny | 16° /11° | 0 mm | 6 | |
| 20 Sept. | Sunny | 18° /12° | 0 mm | 6 | |
| 21 Sept. | Sunny | 18° /13° | 0.5 mm | 6 | |
| 22 Sept. | Patchy rain possible | 15° /11° | 1.4 mm | 5 | |
| 23 Sept. | Sunny | 16° /11° | 0 mm | 6 | |
| 24 Sept. | Sunny | 19° /10° | 0 mm | 6 | |
| 25 Sept. | Sunny | 21° /12° | 0 mm | 7 | |
| 26 Sept. | Sunny | 22° /11° | 0.7 mm | 7 | |
| 27 Sept. | Sunny | 22° /11° | 1.8 mm | 6 | |
| 28 Sept. | Patchy rain possible | 22° /12° | 0.7 mm | 6 | |
| 29 Sept. | Patchy rain possible | 22° /12° | 0.1 mm | 6 | |
| 30 Sept. | Patchy rain possible | 22° /12° | 0.5 mm | 6 | |
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Important Notice
Our weather forecast for Perth 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 Perth forecast closer to your planned date for the most up-to-date weather information.
Change Month
Perth in September - FAQ
What are the expected maximum and minimum temperatures in Perth during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Perth during September?
Moderate rainfall is anticipated in Perth during September, with a total of 57.7 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Perth during September?
The average wind speed in Perth during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Perth
Explore the daily rainfall trends and prepare for Perths September weather 💧
Typically, Perth has 16 rainy days in September with a total of 57.7 mm of rainfall.
UV exposure in Perth during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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