Hornsby Shire (Hornsby)
September
Weather in Hornsby Shire for September 2025
Your guide to Hornsby Shire weather in September - trends and predictions
In general, the average temperature in Hornsby Shire at the beginning of September is 21.7 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 22.1 °C by the end of September.
Hornsby Shire sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
22°/11°
Temperatures
19 km/h
Avg max wind
57 %
Avg humidity
Hornsby Shire in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  20° | 3  17° | 4  21° | 5 24° | 6 25° | 7 25° |
| 8  23° | 9 21° | 10 18° | 11 21° | 12 19° | 13 19° | 14 22° |
| 15  21° | 16 25° | 17 25° | 18 28° | 19 29° | 20 28° | 21 22° |
| 22 20° | 23 23° | 24 23° | 25 27° | 26 20° | 27 18° | 28 20° |
| 29 24° | 30 23° |
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Temperatures trend during September in Hornsby Shire
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 20° /10° | 1 mm | 7 | |
| 2 Sept. | Cloudy | 20° /9° | 0.1 mm | 6 | |
| 3 Sept. | Sunny | 17° /8° | 0 mm | 6 | |
| 4 Sept. | Partly cloudy | 21° /7° | 0 mm | 7 | |
| 5 Sept. | Patchy rain possible | 24° /10° | 0.8 mm | 7 | |
| 6 Sept. | Sunny | 25° /11° | 0 mm | 8 | |
| 7 Sept. | Partly cloudy | 25° /12° | 0.1 mm | 7 | |
| 8 Sept. | Patchy light rain | 23° /11° | 2.3 mm | 7 | |
| 9 Sept. | Sunny | 21° /9° | 0 mm | 6 | |
| 10 Sept. | Sunny | 18° /7° | 0 mm | 6 | |
| 11 Sept. | Sunny | 21° /9° | 0 mm | 7 | |
| 12 Sept. | Partly cloudy | 19° /10° | 2.3 mm | 6 | |
| 13 Sept. | Sunny | 19° /9° | 0.3 mm | 6 | |
| 14 Sept. | Sunny | 22° /8° | 0.1 mm | 7 | |
| 15 Sept. | Overcast | 21° /9° | 0.2 mm | 6 | |
| 16 Sept. | Sunny | 25° /9° | 0 mm | 8 | |
| 17 Sept. | Sunny | 25° /11° | 0 mm | 8 | |
| 18 Sept. | Sunny | 28° /10° | 0 mm | 9 | |
| 19 Sept. | Sunny | 29° /14° | 0 mm | 8 | |
| 20 Sept. | Sunny | 28° /14° | 0 mm | 8 | |
| 21 Sept. | Patchy rain possible | 22° /12° | 0.2 mm | 7 | |
| 22 Sept. | Light rain shower | 20° /11° | 0.4 mm | 6 | |
| 23 Sept. | Patchy rain possible | 23° /10° | 0 mm | 7 | |
| 24 Sept. | Partly cloudy | 23° /10° | 0 mm | 7 | |
| 25 Sept. | Sunny | 27° /12° | 0.1 mm | 8 | |
| 26 Sept. | Patchy light drizzle | 20° /11° | 12.6 mm | 6 | |
| 27 Sept. | Light rain shower | 18° /13° | 2 mm | 6 | |
| 28 Sept. | Patchy rain possible | 20° /13° | 1.1 mm | 6 | |
| 29 Sept. | Sunny | 24° /13° | 0.7 mm | 7 | |
| 30 Sept. | Sunny | 23° /12° | 2 mm | 7 | |
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Important Notice
Our weather forecast for Hornsby Shire 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 Hornsby Shire forecast closer to your planned date for the most up-to-date weather information.
Hornsby Shire in September - FAQ
What are the expected maximum and minimum temperatures in Hornsby Shire during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Hornsby Shire during September?
Expect minimal rainfall in Hornsby Shire during September, with a total of 12.6 mm over approximately 8 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Hornsby Shire during September?
The average wind speed in Hornsby Shire during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hornsby Shire
Explore the daily rainfall trends and prepare for Hornsby Shires September weather 💧
UV exposure in Hornsby Shire during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Hornsby Shire?Get accurate weather forecasts for Hornsby Shire, located at latitude -33.702 and longitude 151.099. Stay updated with localized weather information tailored for Hornsby Shire.
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