Weather in Santiago in December
December in Santiago is mild with average temperatures around 20.6°C (69.1°F). Light rainfall with only 7mm 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
28.5°C
83.3°F
Low
12.7°C
54.9°F
Precipitation
7 mm
0.3 inches
~2 rainy days
Conditions
Humidity
30%
Comparison to Adjacent Months
December is 2.3°C warmer than November.