Weather in Sydney in December
In an average December, Sydney sees a daily high around 24°C and a low around 19°C, based on 1981–2026 of local climate records.
| Average high | 24°C |
|---|---|
| Typical high range | 20°C to 29°C |
| Average low | 19°C |
| Typical low range | 17°C to 21°C |
| Average daily precipitation | 3 mm |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
38°C
2019-12-19
Lowest
16°C
1995-12-12
Low
Highest
26°C
2000-12-23
Lowest
14°C
1995-12-12
Feels-like
Highest
54°C
2023-12-09
Lowest
14°C
1995-12-12
Humidity
Highest
20.6 g/m³
2024-12-07
Lowest
6.8 g/m³
1984-12-04
Wind
Highest
46 km/h
2014-12-11
Lowest
10 km/h
2005-12-25
Precip
Wettest
199 mm
1991
Driest
2 mm
2019
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