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Santiago in December: Weather, Average temperature and Climate

Take a look at past year’s weather for Santiago in December and see if it is worth visiting.
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December

Weather in Santiago in December 2024

Great Weather
Warm
☀️
Sunny
For those searching for an ideal December holiday with excellent weather, Santiago is a perfect choice. Average maximum temperatures are +82°F. Expect about 23 sunny days, making it the perfect place to enjoy the sunshine. It's worth noting that there may be some rainfall, with an average of 5 mm of precipitation over 4 rainy days. So, take your sunglasses, a beach towel, and great walking shoes, as it looks like amazing weather. Search flights in one click on Avionero.

Average weather

☀️
+82°F
Avg. max. temperature
+43°F
Min.
+99°F
Max.
5 mm
Total precipitation
53%
Avg. humidity
3 m/s
Avg. wind
23 ☀️
Sunny Days
4 ⛅️
Cloudy
4 🌦
Rainy
Our opinion: Santiago has great weather in December.

Average temperature in Santiago in December

Here are the expected maximum, average and minimum temperatures in Santiago for December based on the historical data.
Last Year
Historical Data

The temperature in December is +86°F on average, with a range between a maximum of +99°F during the day and a minimum of +48°F at night.

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

Santiago weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
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 mm5 mm4 mm
Wind
2 m/s3 m/s3 m/s
Humidity
57%53%52%
Air pressure
1013 HPa1012 HPa1012 HPa
Sunny days
172325
Cloudy days
542
Rainy days
744
Snowy days
000

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

Wind speed in Santiago in December based on historical data.
Last Year
Historical Data

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?

This is the weather in Santiago in December 2023:
1 December
☀️
+78°F
2 December
☀️
+79°F
3 December
☀️
+86°F
4 December
☀️
+83°F
5 December
☀️
+78°F
6 December
☀️
+87°F
7 December
☀️
+93°F
8 December
☀️
+84°F
9 December
☀️
+89°F
10 December
☀️
+95°F
11 December
☀️
+83°F
12 December
☀️
+88°F
13 December
☀️
+91°F
14 December
☀️
+83°F
15 December
☀️
+86°F
16 December
☀️
+77°F
17 December
☀️
+81°F
18 December
☀️
+86°F
19 December
☀️
+81°F
20 December
☀️
+87°F
21 December
☀️
+87°F
22 December
☀️
+91°F
23 December
☀️
+87°F
24 December
☀️
+87°F
25 December
☀️
+99°F
26 December
☀️
+87°F
27 December
☀️
+86°F
28 December
☁️
+72°F
29 December
☀️
+88°F
30 December
☀️
+81°F
31 December
☀️
+85°F
In December 2023 Santiago had 30 sunny days, 1 cloudy days, and 0 rainy days. The average maximum temperature was +86°F, with an absolute maximum of +99°F and a minimum of +72°F. The average humidity was 60%, with a maximum of 96% and a minimum of 25%. The average wind speed was 3 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change Over the Years

This is how Santiago climate has changed over the last 43 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

Frequently asked questions about the weather in Santiago in December:

Is December a good time to visit Santiago?

Yes, December is a great time to go to Santiago, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Santiago.

Can you sunbathe in Santiago in December?

December is warm in Santiago. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Santiago rainy in December?

Santiago is usually dry in December. Plan your packing around outdoor activities and exploring.

Is it sunny in Santiago in December?

Yes, Santiago is sunny in December. Prepare for lots of rays. Don’t forget to pack your sunglasses and sunscreen, and maybe pick up a wide-brimmed hat when you arrive.

Other cities in Chile

Check out the weather for 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.