Last updated: August 22, 2025
In December, the average temperature in San Cristobal, Argentina is a pleasant 25°C (78°F). However, be prepared for variability, as temperatures can range from a cool 11°C (52°F) to a sizzling 40°C (104°F). Expect some rain, with an average precipitation of 88 mm (3.5 in) over 6 days. The average humidity sits at a comfortable 57%, adding to the region's unique charm.
In December in San Cristobal, the average temperature is 25°C (78°F). Maximums can reach 40°C (104°F), while minimums can drop as low as 11°C (52°F). This period offers warm weather ideal for outdoor adventures, so be prepared for both hot and cooler moments during your travels.
In San Cristobal in December, the precipitation amount is 88 mm (3.5 in) over the course of 6 days.
In San Cristobal in December humidity is 57%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making it comfortable for outdoor activities but slightly sticky, urging travelers to stay hydrated and seek shade during the midday sun.
In San Cristobal in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Cristobal.
UV Risk Categories
Weather in San Cristobal varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Cristobal, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (80°F) | 141 mm (5.6 inches) | 51% | extreme |
| February Weather | 25°C (77°F) | 95 mm (3.8 inches) | 57% | extreme |
| March Weather | 23°C (73°F) | 103 mm (4.1 inches) | 65% | extreme |
| April Weather | 20°C (68°F) | 96 mm (3.8 inches) | 76% | very high |
| May Weather | 16°C (61°F) | 99 mm (3.9 inches) | 83% | high |
| June Weather | 13°C (56°F) | 49 mm (1.9 inches) | 78% | moderate |
| July Weather | 12°C (54°F) | 47 mm (1.8 inches) | 58% | moderate |
| August Weather | 14°C (58°F) | 47 mm (1.9 inches) | 54% | high |
| September Weather | 17°C (63°F) | 53 mm (2.1 inches) | 59% | very high |
| October Weather | 20°C (68°F) | 90 mm (3.5 inches) | 50% | extreme |
| November Weather | 23°C (73°F) | 108 mm (4.3 inches) | 53% | extreme |
| December Weather | 25°C (78°F) | 88 mm (3.5 inches) | 57% | extreme |