Santiago (Santiago de los Caballeros)
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 29.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 27 °C by the end of December.
Santiago in December brings notable rainfall, with an average of 19 rainy days and a total precipitation of 234.7 mm.
Temperatures
Rain 🌧️
12
Dry days
19
Rainy days
0
Snow days
27°/18°
Temperatures
16 km/h
Avg max wind
83 %
Avg humidity
Santiago in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  30° | 2  31° | 3 27° | 4  28° | 5 29° | 6 31° | 7 29° |
| 8 25° | 9 28° | 10  26° | 11 29° | 12 28° | 13 24° | 14 25° |
| 15 27° | 16 27° | 17 28° | 18 26° | 19 26° | 20 26° | 21 25° |
| 22 27° | 23 26° | 24 27° | 25 27° | 26  27° | 27 28° | 28 27° |
| 29 28° | 30 26° | 31 26° |
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Temperatures trend during December in Santiago
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Mist | 30° /18° | 0 mm | 7 | |
| 2 Dec. | Patchy rain possible | 31° /20° | 0.7 mm | 7 | |
| 3 Dec. | Patchy rain possible | 27° /21° | 8.2 mm | 6 | |
| 4 Dec. | Sunny | 28° /19° | 42.1 mm | 7 | |
| 5 Dec. | Patchy rain possible | 29° /20° | 15.6 mm | 7 | |
| 6 Dec. | Patchy rain possible | 31° /19° | 3.5 mm | 7 | |
| 7 Dec. | Light rain shower | 29° /18° | 2.3 mm | 6 | |
| 8 Dec. | Light rain shower | 25° /20° | 74.3 mm | 6 | |
| 9 Dec. | Light rain shower | 28° /21° | 12.6 mm | 7 | |
| 10 Dec. | Light rain | 26° /19° | 10.8 mm | 6 | |
| 11 Dec. | Patchy rain possible | 29° /19° | 0.1 mm | 7 | |
| 12 Dec. | Fog | 28° /19° | 0.3 mm | 7 | |
| 13 Dec. | Light rain shower | 24° /18° | 2.1 mm | 6 | |
| 14 Dec. | Light rain shower | 25° /17° | 16.2 mm | 5 | |
| 15 Dec. | Light rain shower | 27° /18° | 10.2 mm | 6 | |
| 16 Dec. | Light rain shower | 27° /19° | 1.5 mm | 6 | |
| 17 Dec. | Patchy rain possible | 28° /20° | 2.5 mm | 6 | |
| 18 Dec. | Light rain shower | 26° /20° | 23.4 mm | 6 | |
| 19 Dec. | Light rain shower | 26° /20° | 8.1 mm | 6 | |
| 20 Dec. | Light rain shower | 26° /20° | 7.7 mm | 6 | |
| 21 Dec. | Light rain shower | 25° /20° | 10.7 mm | 6 | |
| 22 Dec. | Light rain shower | 27° /18° | 5.1 mm | 6 | |
| 23 Dec. | Sunny | 26° /17° | 15.1 mm | 6 | |
| 24 Dec. | Sunny | 27° /17° | 2.5 mm | 6 | |
| 25 Dec. | Patchy rain possible | 27° /17° | 2.7 mm | 6 | |
| 26 Dec. | Partly cloudy | 27° /16° | 3 mm | 6 | |
| 27 Dec. | Partly cloudy | 28° /18° | 0.1 mm | 7 | |
| 28 Dec. | Sunny | 27° /17° | 9.3 mm | 6 | |
| 29 Dec. | Patchy rain possible | 28° /17° | 0.2 mm | 6 | |
| 30 Dec. | Patchy rain possible | 26° /18° | 0.7 mm | 6 | |
| 31 Dec. | Partly cloudy | 26° /18° | 2.3 mm | 6 | |
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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?
During December, expect a variety of temperatures with highs around 27° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Santiago during December?
Significant rainfall exceeding 234.7 mm is expected in Santiago during December, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Santiago during December?
The average wind speed in Santiago during December is 16 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 ☀️
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