Weather in Sydney in December 2024
Average weather
Average temperature in Sydney in December
Going from a maximum of +35°C during the day to a minimum of +16°C during the night, the temperature in December averages around +26°C.
The average maximum temperature goes down 16% by the end of the month, compared with the beginning of the month, from +24°C to +21°C.
Is Sydney warm or cold in December?
Sydney is typically warm in December.
Maximum temperatures go up compared to the previous month from +23°C to +25°C. The minimum temperature also goes up from +16°C to +18°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
December is one of the warmest months in Sydney, here is the comparison with other months:
Water temperature in Sydney in December
Water in Sydney in December is Comfortable. It varies from +20°C to +25°C, with an average of +22°C. This is almost similar to the air temperature, which averages +25°C.
In December, water temperatures are average relative to the rest of the year:
Can you swim in Sydney in December?
Climate in Sydney in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +23°C | +25°C | +26°C | ||||
| Min. temperature | ||||||
| +8°C | +11°C | +13°C | ||||
| Max. temperature | ||||||
| +41°C | +41°C | +44°C | ||||
| Rainfall | ||||||
| 82 mm | 75 mm | 79 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +21°C | +22°C | +23°C | ||||
| Humidity | ||||||
| 68% | 68% | 71% | ||||
| Air pressure | ||||||
| 1013 HPa | 1012 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 6 | 7 | 6 | ||||
| Cloudy days | ||||||
| 6 | 7 | 7 | ||||
| Rainy days | ||||||
| 15 | 15 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December weather is still as good as in November. It’s getting warmer as December arrives. The average maximum temperature goes up from +23°C to +25°C during the day. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 82 mm to 75 mm. Humidity levels don’t change as the month goes on, averaging around 68%. The average wind speed doesn’t change much during December, staying around 4 m/s. The good news is there are likely to be more sunny days in December, from 6 to 7.
January brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Sydney is gradually increasing during December, going from 4 m/s to 4 m/s over the course of the month.
Rain
How was the weather last December in Sydney?
Climate Change over Years
The climate in Sydney in December has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+20°C) and the highest in 2019 (+23°C). The driest year was 2006 with only 423 mm of rainfall, and the wettest year was 2022 with 2786 mm.
FAQ
Is December a good time to visit Sydney?
Can you sunbathe in Sydney in December?
Can you swim in Sydney in December?
Is Sydney rainy in December?
Is it sunny in Sydney in December?
Other cities in Australia
Monthly weather in Sydney
Source of the data
For this page, we’ve looked at the typical weather in Sydney, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.