Weather in Sydney, New South Wales, Australia in December
In an average December, Sydney sees a daily high around 24°C and a low around 18°C, based on 1980–2026 of local climate records.
| Average high | 24°C |
|---|---|
| Typical high range | 20°C to 29°C |
| Average low | 18°C |
| Typical low range | 15°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
37°C
2004-12-01
Lowest
17°C
1995-12-12
Low
Highest
24°C
2000-12-23
Lowest
11°C
1995-12-26
Feels-like
Highest
38°C
1994-12-21
Lowest
8°C
2010-12-20
Humidity
Highest
19.4 g/m³
2024-12-07
Lowest
5.5 g/m³
2002-12-06
Wind
Highest
36 km/h
2007-12-22
Lowest
7 km/h
1999-12-28
Gust
Highest
82 km/h
1989-12-26
Lowest
21 km/h
1993-12-21
Precip
Wettest
123 mm
2014
Driest
8 mm
2019
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