Santiago Weather in December
December is one of the excellent months to visit Santiago, with daytime temperatures of 26°C (79°F) and lows of 12°C (54°F) at night. Some rainfall is typical for this time of year.
Rainfall in Santiago in December
Typically, about 3 days will experience rainfall, with an average of 18 mm (0.7 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Santiago in December
December is one of the better months to visit Santiago. Expect 26°C (79°F) during the day and 12°C (54°F) at night. December is in the summer season. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Santiago in December
Expect a lot of sunshine this month, with about 347 hours of sun. These sunny conditions add to the overall experience.If you're a fan of comfortable temperatures and drier conditions, December is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our Santiago's climate page.
Santiago Temperature in December
Min Temperature
12°C (54°F)
Max Temperature
26°C (79°F)
Chance of Rain
11%
Precipitation
18 mm (0.7 in)
Rainy days
3 days
Humidity
55%
Sunshine
347 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Santiago typically stay consistent throughout December, with daily highs averaging around 26°C (79°F). Nights are cool, with lows typically ranging from 11°C (52°F) to 13°C (55°F).
Average temperatures in December
Historical weather for Santiago in December
Browse day-by-day weather records for Santiago spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Santiago historical weather extremes in December
According to our 49 years of weather records for Santiago, the following extremes were recorded between 1976 and 2025.
- Santiago recorded its highest December temperature of 36°C (97°F) on December 15, 2022.
- On December 10, 1991, Santiago saw its coldest December day with temperatures maxing out at 14°C (57°F).
- The coldest night in December in Santiago was on December 11, 1991, with a minimum of 4°C (39°F).
Best Places in Chile in December
Find out more about the weather in Chile and which places have the best travel conditions in this month. See all of Chile in December →
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What to Wear in Santiago in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Santiago in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our Santiago's climate page.
Temperature Rainfall Sunshine Humidity
See the full Santiago climate overview or explore weather in Chile.
