Santiago
December
Weather in Santiago for December 2025
Your guide to Santiago weather in December - trends and predictions
In general, the average temperature in Santiago at the beginning of December is 20.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.9 °C by the end of December.
With an average of 2 rainy days, Santiago experiences minimal rainfall in December.
Temperatures
Rain 🌧️
29
Dry days
2
Rainy days
0
Snow days
22°/11°
Temperatures
18 km/h
Avg max wind
35 %
Avg humidity
Santiago in December average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2 18° | 3 20° | 4 21° | 5 20° | 6  21° | 7 24° |
| 8 22° | 9 25° | 10  25° | 11 22° | 12 25° | 13 26° | 14 22° |
| 15 22° | 16 21° | 17 20° | 18 23° | 19 22° | 20 22° | 21 26° |
| 22 29° | 23  26° | 24 26° | 25 26° | 26 25° | 27 25° | 28 25° |
| 29 26° | 30 26° | 31 21° |
You can click on date
Access Santiago weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during December in Santiago
See the weather trend as well as the moving average line
December weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Sunny | 18° /7° | 0 mm | 7 | |
| 2 Dec. | Sunny | 18° /7° | 0 mm | 7 | |
| 3 Dec. | Sunny | 20° /8° | 0 mm | 7 | |
| 4 Dec. | Sunny | 21° /9° | 0 mm | 8 | |
| 5 Dec. | Sunny | 20° /7° | 0 mm | 7 | |
| 6 Dec. | Overcast | 21° /9° | 0 mm | 6 | |
| 7 Dec. | Sunny | 24° /10° | 0 mm | 7 | |
| 8 Dec. | Sunny | 22° /10° | 0 mm | 7 | |
| 9 Dec. | Sunny | 25° /10° | 0 mm | 8 | |
| 10 Dec. | Partly cloudy | 25° /12° | 0 mm | 8 | |
| 11 Dec. | Sunny | 22° /11° | 0 mm | 8 | |
| 12 Dec. | Sunny | 25° /10° | 0 mm | 8 | |
| 13 Dec. | Sunny | 26° /12° | 0 mm | 8 | |
| 14 Dec. | Partly cloudy | 22° /11° | 0 mm | 8 | |
| 15 Dec. | Sunny | 22° /11° | 0 mm | 7 | |
| 16 Dec. | Partly cloudy | 21° /9° | 0 mm | 7 | |
| 17 Dec. | Sunny | 20° /8° | 0 mm | 7 | |
| 18 Dec. | Sunny | 23° /9° | 0 mm | 8 | |
| 19 Dec. | Sunny | 22° /10° | 0 mm | 8 | |
| 20 Dec. | Sunny | 22° /10° | 0 mm | 7 | |
| 21 Dec. | Sunny | 26° /11° | 0 mm | 8 | |
| 22 Dec. | Sunny | 29° /15° | 0 mm | 8 | |
| 23 Dec. | Patchy rain possible | 26° /16° | 0 mm | 7 | |
| 24 Dec. | Sunny | 26° /14° | 0 mm | 7 | |
| 25 Dec. | Overcast | 26° /14° | 0 mm | 7 | |
| 26 Dec. | Patchy rain possible | 25° /13° | 0.1 mm | 7 | |
| 27 Dec. | Patchy rain possible | 25° /13° | 0.1 mm | 7 | |
| 28 Dec. | Patchy rain possible | 25° /14° | 0.6 mm | 7 | |
| 29 Dec. | Patchy rain possible | 26° /14° | 0.1 mm | 7 | |
| 30 Dec. | Patchy rain possible | 26° /14° | 0.1 mm | 7 | |
| 31 Dec. | Sunny | 21° /11° | 4.1 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Santiago in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Santiago forecast closer to your planned date for the most up-to-date weather information.
Santiago in December - FAQ
What are the expected maximum and minimum temperatures in Santiago during December?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Santiago during December?
Rainfall in Santiago during December is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Santiago during December?
The average wind speed in Santiago during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Santiago
Explore the daily rainfall trends and prepare for Santiagos December weather 💧
UV exposure in Santiago during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
Quick links
You are here
Where is Santiago?Get accurate weather forecasts for Santiago, located at latitude -33.457 and longitude -70.648. Stay updated with localized weather information tailored for Santiago.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.