Weather in Sydney in December
In an average December, Sydney sees a daily high around 27°C and a low around 17°C, based on 1980–2026 of local climate records.
| Average high | 27°C |
|---|---|
| Typical high range | 21°C to 33°C |
| Average low | 17°C |
| Typical low range | 14°C to 20°C |
| Average daily precipitation | 3 mm |
December records
The most extreme December on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
43°C
1994-12-21
Lowest
15°C
2002-12-10
Low
Highest
26°C
2017-12-19
Lowest
10°C
1995-12-25
Feels-like
Highest
68°C
2023-12-09
Lowest
6°C
2002-12-06
Humidity
Highest
21.2 g/m³
1988-12-10
Lowest
5.2 g/m³
1993-12-27
Wind
Highest
36 km/h
2007-12-22
Lowest
8 km/h
1997-12-17
Gust
Highest
83 km/h
2022-12-12
Lowest
22 km/h
1999-12-27
Precip
Wettest
127 mm
2014
Driest
10 mm
2019
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