Weather in Santiago in December 2025
Average weather
Average temperature in Santiago in December
The temperature in December is +29°C on average, with a range between a maximum of +31°C during the day and a minimum of +20°C at night.
The average maximum temperature goes down 55% by the end of the month, compared with the beginning of the month, from +31°C to +25°C.
Is Santiago warm or cold in December?
Santiago is typically warm in December.
Maximum temperatures go down compared to the previous month from +30°C to +29°C. The minimum temperature also goes down from +22°C to +21°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how December is compared to other months in Santiago:
Climate in Santiago in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +29°C | +29°C | ||||
| Min. temperature | ||||||
| +16°C | +14°C | +14°C | ||||
| Max. temperature | ||||||
| +33°C | +33°C | +33°C | ||||
| Rainfall | ||||||
| 56 mm | 19 mm | 10 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 77% | 75% | 74% | ||||
| Air pressure | ||||||
| 1013 HPa | 1015 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 7 | 13 | 15 | ||||
| Cloudy days | ||||||
| 6 | 8 | 7 | ||||
| Rainy days | ||||||
| 16 | 10 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December often has better weather than November. It’s getting colder in December. From +30°C in the day, the average maximum temperature lowers to +29°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 56 mm to 19 mm. It feels drier, as humidity decreases from 77% to 75%. The average wind speed doesn’t change much during December, staying around 2 m/s. The good news is there are likely to be more sunny days in December, from 7 to 13.
But maybe it is worth considering traveling in January as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 5 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 2 m/s to 5 m/s over the course of the month.
Rain
How was the weather last December in Santiago?
Climate Change over Years
The climate in Santiago in December has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+29°C) and the highest in 1990 (+31°C). The driest year was 2004 with only 403 mm of rainfall, and the wettest year was 1987 with 1025 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 Cuba
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.
