Hornsby Shire (Hornsby)
December
Weather in Hornsby Shire for December 2025
Your guide to Hornsby Shire weather in December - trends and predictions
Until now, December 2025 in Hornsby Shire is slightly cooler than the historical average by -1.9 °C.
The forecast for the next days in Hornsby Shire predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Hornsby Shire at the beginning of December is 28 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.3 °C by the end of December.
The climate of Hornsby Shire in December is notably wet, with an average of 12 rainy days, and a total of 57.1 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
12
Rainy days
0
Snow days
27°/18°
Temperatures
22 km/h
Avg max wind
68 %
Avg humidity
Hornsby Shire Weather December
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Temperatures trend during December in Hornsby Shire
See the weather trend as well as the moving average line
December weather in Hornsby Shire day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Patchy rain possible | 25° /16° | 2.4 mm | 9 | |
| 2 Dec. |  Sunny | 26° /15° | 4 mm | 9 | |
| 3 Dec. | Patchy rain possible | 27° /16° | 1.2 mm | 9 | |
| 4 Dec. | Patchy rain possible | 25° /17° | 0.2 mm | 9 | |
| 5 Dec. | Sunny | 31° /17° | 0 mm | 11 | |
| 6 Dec. | Sunny | 32° /20° | 0.9 mm | 10 | |
| 7 Dec. | Sunny | 30° /18° | 0.9 mm | 10 | |
| 8 Dec. | Patchy rain possible | 29° /18° | 0.3 mm | 9 | |
| 9 Dec. | Patchy rain possible | 31° /19° | 0.3 mm | 10 | |
| 10 Dec. | Patchy rain possible | 26° /19° | 2.2 mm | 9 | |
| 11 Dec. | Patchy rain possible | 23° /18° | 4.9 mm | 8 | |
| 12 Dec. | Patchy rain possible | 26° /18° | 4.4 mm | 9 | |
| 13 Dec. |  Partly cloudy | 29° /17° | 1 mm | 10 | |
| 14 Dec. | Sunny | 33° /20° | 0.5 mm | 11 | |
| 15 Dec. | Partly cloudy | 25° /19° | 0.3 mm | 9 | |
| 16 Dec. | Patchy rain possible | 27° /18° | 0.4 mm | 9 | |
| 17 Dec. | Patchy rain possible | 30° /19° | 0.7 mm | 9 | |
| 18 Dec. | Sunny | 33° /18° | 0 mm | 3.6 | |
| 19 Dec. | Patchy rain possible | 37° /22° | 1.9 mm | 2.8 | |
| 20 Dec. | Patchy rain possible | 34° /21° | 0.4 mm | 3.1 | |
| 21 Dec. |  Moderate rain | 36° /22° | 14 mm | 2.4 | |
| 22 Dec. | Partly cloudy | 26° /20° | 0 mm | 9 | |
| 23 Dec. | Patchy rain possible | 25° /20° | 0.9 mm | 8 | |
| 24 Dec. | Patchy rain possible | 24° /18° | 0.3 mm | 8 | |
| 25 Dec. | Patchy rain possible | 23° /19° | 0.2 mm | 8 | |
| 26 Dec. | Patchy rain possible | 19° /17° | 0.5 mm | 7 | |
| 27 Dec. | Sunny | 22° /16° | 0 mm | 8 | |
| 28 Dec. | Sunny | 27° /14° | 0 mm | 9 | |
| 29 Dec. | Sunny | 29° /17° | 0 mm | 9 | |
| 30 Dec. | Sunny | 27° /18° | 0 mm | 9 | |
| 31 Dec. | Patchy rain possible | 23° /18° | 0.5 mm | 8 | |
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Important Notice
Our weather forecast for Hornsby Shire in December 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.
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Hornsby Shire in December - FAQ
What are the expected maximum and minimum temperatures in Hornsby Shire during December?
During December, expect a variety of temperatures with highs around 27° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hornsby Shire during December?
Moderate rainfall is anticipated in Hornsby Shire during December, with a total of 57.1 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Hornsby Shire during December?
The average wind speed in Hornsby Shire during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Hornsby Shire
Explore the daily rainfall trends and prepare for Hornsby Shires December weather 💧
Typically, Hornsby Shire has 12 rainy days in December with a total of 57.1 mm of rainfall.
UV exposure in Hornsby Shire during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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