Weather in Santiago in December 2025
Average weather
Average temperature in Santiago in December
Going from a maximum of +99°F during the day to a minimum of +48°F during the night, the temperature in December averages around +86°F.
The average maximum temperature goes up 18% by the end of the month, compared with the beginning of the month, from +77°F to +86°F.
Is Santiago warm or cold in December?
Santiago is typically warm in December.
Maximum temperatures go up compared to the previous month from +77°F to +82°F. The minimum temperature also goes up from +54°F to +59°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
December is one of the warmest months in Santiago, here is the comparison with other months:
Climate in Santiago in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +77°F | +82°F | +84°F | ||||
| Min. temperature | ||||||
| +37°F | +43°F | +48°F | ||||
| Max. temperature | ||||||
| +93°F | +99°F | +99°F | ||||
| Rainfall | ||||||
| 14 mm | 5 mm | 4 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 57% | 53% | 52% | ||||
| Air pressure | ||||||
| 1013 HPa | 1012 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 17 | 23 | 25 | ||||
| Cloudy days | ||||||
| 5 | 4 | 2 | ||||
| Rainy days | ||||||
| 7 | 4 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December weather is still as great as in November. It’s getting warmer as December arrives. The average maximum temperature goes up from +77°F to +82°F during the day. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 14 mm to 5 mm. It feels drier, as humidity decreases from 57% to 53%. Winds are stronger in comparison to November, going up from 2 m/s to 3 m/s on average. The good news is there are likely to be more sunny days in December, from 17 to 23.
January brings much the same weather, it remains great.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Santiago is gradually increasing during December, going from 3 m/s to 3 m/s over the course of the month.
How was the weather last December in Santiago?
Climate Change Over the Years
The climate in Santiago in December has not changed that much over the last 43 years.
The average temperature was the lowest in 2007 (+70°F) and the highest in 2020 (+75°F). The driest year was 1998 with only 165 mm of rainfall, and the wettest year was 1997 with 1031 mm.
FAQ
Is December a good time to visit Santiago?
Can you sunbathe in Santiago in December?
Is Santiago rainy in December?
Is it sunny in Santiago in December?
Other cities in Chile
Monthly weather in Santiago
Source of the data
For this page, we’ve looked at the typical weather in Santiago, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
