Last updated: August 23, 2025
In December, the average temperature in San Antonio, Colombia is a warm 29°C (85°F), with daily variations between a minimum of 22°C (72°F) and a maximum of 38°C (101°F). Expect some moisture in the air, as the average humidity hovers around 65%. Rainfall is minimal, with an expected precipitation amount of 19 mm (0.7 in) spread over about 5 days.
In December in San Antonio, the average temperature is 29°C (85°F), with maximums reaching up to 38°C (101°F) and minimums dropping as low as 22°C (72°F). This warm climate makes it an ideal destination for sun-seekers and outdoor enthusiasts looking to enjoy various activities.
In San Antonio in December, the total precipitation amount is 19 mm (0.7 in) spread over the course of 5 days.
In San Antonio in December humidity is 65%. With an average temperature of 29°C (85°F), this humidity feels like a dense, warm blanket enveloping you as you travel, making the air thick and slightly uncomfortable, yet still invigorating for exploring the sights.
In San Antonio in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Antonio.
UV Risk Categories
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 30°C (86°F) | 7 mm (0.3 inches) | 51% | extreme |
| February Weather | 30°C (87°F) | 3 mm (0.1 inches) | 47% | extreme |
| March Weather | 30°C (86°F) | 19 mm (0.7 inches) | 45% | extreme |
| April Weather | 30°C (86°F) | 57 mm (2.3 inches) | 46% | extreme |
| May Weather | 29°C (84°F) | 152 mm (6.0 inches) | 62% | extreme |
| June Weather | 29°C (84°F) | 98 mm (3.9 inches) | 81% | extreme |
| July Weather | 30°C (85°F) | 84 mm (3.3 inches) | 87% | extreme |
| August Weather | 29°C (84°F) | 117 mm (4.6 inches) | 83% | extreme |
| September Weather | 28°C (83°F) | 129 mm (5.1 inches) | 83% | extreme |
| October Weather | 28°C (82°F) | 143 mm (5.6 inches) | 85% | extreme |
| November Weather | 28°C (83°F) | 90 mm (3.5 inches) | 83% | extreme |
| December Weather | 29°C (85°F) | 19 mm (0.7 inches) | 65% | very high |