Hornsby
September
Weather in Hornsby for September 2025
Your guide to Hornsby weather in September - trends and predictions
In general, the average temperature in Hornsby 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 experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 26.3 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
22°/11°
Temperatures
20 km/h
Avg max wind
54 %
Avg humidity
Hornsby in September average weather
Move between months or click on a day
| 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° |
You can click on date
Access Hornsby weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Hornsby
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| 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 | |
| Next | |||||
Important Notice
Our weather forecast for Hornsby 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 forecast closer to your planned date for the most up-to-date weather information.
Hornsby in September - FAQ
What are the expected maximum and minimum temperatures in Hornsby 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 during September?
In September, Hornsby can expect light to moderate rainfall, totaling 26.3 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Hornsby during September?
The average wind speed in Hornsby during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hornsby
Explore the daily rainfall trends and prepare for Hornsbys September weather 💧
UV exposure in Hornsby during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
You are here
Where is Hornsby?Get accurate weather forecasts for Hornsby, located at latitude -33.702 and longitude 151.099. Stay updated with localized weather information tailored for Hornsby.
Found a mistake?
We appreciate your attention to details. Tell us here.