Weather in Santiago in December 2025
- December is usually the wettest month of the year in Santiago;
Average weather
Average temperature in Santiago in December
The expected average maximum temperature in December is +84°F with a maximum of +90°F and a minimum of +63°F.
The average maximum temperature goes down 27% by the end of the month, compared with the beginning of the month, from +86°F to +79°F.
Is Santiago warm or cold in December?
Santiago is typically warm in December.
Maximum temperatures go down compared to the previous month from +84°F to +82°F. The minimum temperature also goes down from +68°F to +66°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
December is one of the coolest months in Santiago, here is the comparison with other months:
Climate in Santiago in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +84°F | +82°F | +82°F | ||||
| Min. temperature | ||||||
| +61°F | +57°F | +54°F | ||||
| Max. temperature | ||||||
| +93°F | +91°F | +90°F | ||||
| Rainfall | ||||||
| 58 mm | 36 mm | 34 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 82% | 82% | 81% | ||||
| Air pressure | ||||||
| 1013 HPa | 1016 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 2 | 4 | 6 | ||||
| Cloudy days | ||||||
| 7 | 11 | 11 | ||||
| Rainy days | ||||||
| 17 | 16 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December often has better weather than November. It’s getting colder in December. From +84°F in the day, the average maximum temperature lowers to +82°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 58 mm to 36 mm. Humidity levels don’t change as the month goes on, averaging around 82%. The average wind speed doesn’t change much during December, staying around 1 m/s. The good news is there are likely to be more sunny days in December, from 2 to 4.
January brings much the same weather, it remains good.
Wind
The average wind speed is 1 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Santiago is gradually decreasing during December, going from 2 m/s to 0 m/s over the course of the month.
Rain
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 1979 (+83°F) and the highest in 2023 (+89°F). The driest year was 2018 with only 395 mm of rainfall, and the wettest year was 1979 with 1082 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 Dominican Republic
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.
