Weather in Adelaide in December
December in Adelaide is mild with average temperatures around 20.6°C (69.1°F). Light rainfall with only 23mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
27.2°C
81.0°F
Low
13.9°C
57.0°F
Precipitation
23 mm
0.9 inches
~4 rainy days
Conditions
Humidity
53%
Comparison to Adjacent Months
December is 2.3°C cooler than January.