Sydney
December
Weather in Sydney for December 2026
Your guide to Sydney weather in December - trends and predictions
In general, the average temperature in Sydney at the beginning of December is 23.5 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 23.1 °C by the end of December.
Sydney experiences moderate rainfall in December, with an average of 10 rainy days and a total precipitation of 64.6 mm.
Is December a good time to visit Sydney? check out the best time to travel to Sydney page.
✨ Is December a good time to visit Sydney? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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21
Dry days
10
Rainy days
0
Snow days
23°/18°
Temperatures
25 km/h
Avg max wind
72 %
Avg humidity
Sydney Weather December
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Temperatures trend during December in Sydney
See the weather trend as well as the moving average line
December weather in Sydney day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain | 22° /17° | 3 mm | 8 | |
| 2 Dec. |  Patchy rain possible | 23° /16° | 2.2 mm | 8 | |
| 3 Dec. | Patchy rain possible | 23° /17° | 1.3 mm | 8 | |
| 4 Dec. | Patchy rain possible | 22° /17° | 0.4 mm | 8 | |
| 5 Dec. |  Partly cloudy | 24° /17° | 0.1 mm | 9 | |
| 6 Dec. | Patchy rain possible | 24° /19° | 0.7 mm | 8 | |
| 7 Dec. | Patchy rain possible | 26° /18° | 1.6 mm | 8 | |
| 8 Dec. | Patchy rain possible | 23° /17° | 0.2 mm | 8 | |
| 9 Dec. | Patchy rain possible | 24° /18° | 1.9 mm | 8 | |
| 10 Dec. | Light rain | 22° /17° | 3.5 mm | 8 | |
| 11 Dec. | Light rain | 21° /17° | 3.5 mm | 8 | |
| 12 Dec. | Light rain | 23° /17° | 2.8 mm | 8 | |
| 13 Dec. | Patchy rain possible | 24° /17° | 0.4 mm | 9 | |
| 14 Dec. | Patchy rain possible | 25° /18° | 1.2 mm | 9 | |
| 15 Dec. | Patchy rain possible | 23° /17° | 1.9 mm | 8 | |
| 16 Dec. | Light rain | 23° /18° | 3.8 mm | 8 | |
| 17 Dec. | Light rain | 24° /19° | 3.2 mm | 8 | |
| 18 Dec. | Patchy rain possible | 25° /19° | 2.4 mm | 9 | |
| 19 Dec. | Partly cloudy | 25° /19° | 0.9 mm | 9 | |
| 20 Dec. | Light rain | 23° /18° | 4.3 mm | 8 | |
| 21 Dec. | Light rain | 25° /18° | 4.8 mm | 9 | |
| 22 Dec. | Patchy rain possible | 24° /18° | 2.3 mm | 8 | |
| 23 Dec. | Patchy rain possible | 24° /18° | 1.2 mm | 8 | |
| 24 Dec. | Patchy rain possible | 23° /18° | 1.9 mm | 8 | |
| 25 Dec. | Light rain | 23° /18° | 2.7 mm | 7 | |
| 26 Dec. | Light rain | 23° /18° | 3.8 mm | 7 | |
| 27 Dec. | Light rain | 25° /18° | 2.5 mm | 9 | |
| 28 Dec. | Patchy rain possible | 24° /17° | 1.4 mm | 8 | |
| 29 Dec. | Patchy rain possible | 22° /18° | 1.2 mm | 8 | |
| 30 Dec. | Light rain | 23° /17° | 2.8 mm | 8 | |
| 31 Dec. | Patchy rain possible | 23° /18° | 0.8 mm | 8 | |
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Important Notice
Our weather forecast for Sydney 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 Sydney forecast closer to your planned date for the most up-to-date weather information.
Change Month
Sydney in December - FAQ
What are the expected maximum and minimum temperatures in Sydney during December?
During December, expect a variety of temperatures with highs around 23° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sydney during December?
Moderate rainfall is anticipated in Sydney during December, with a total of 64.6 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Sydney during December?
The average wind speed in Sydney during December is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
Sydney water temperatures in December
The average water temperature of the Pacific Ocean near Sydney in December is 20.2 °C. At the beginning of December temperatures are around 20 °C; by the end of the month they stay fairly steady and reach 20.4 °C.
- What is the water temperature in Sydney in December?
- The average water temperature in Sydney in December is 20.2 °C.
- Can you swim in Sydney in December?
- Refreshing and invigorating. Expect to feel chilled after 10–20 minutes; a shorty wetsuit extends water time, especially at dawn.
December rainfall patterns in Sydney
Explore the daily rainfall trends and prepare for Sydneys December weather 💧
Typically, Sydney has 10 rainy days in December with a total of 64.6 mm of rainfall.
UV exposure in Sydney during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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