Last updated: June 24, 2025
In December, the average temperature in Mexico, United States hovers around 2°C (35°F). Expect a chilly range with minimums plunging to -22°C (-8°F) and maximums peaking at 17°C (63°F). Rainfall can be expected, with an average precipitation of 67 mm (2.6 in) spread over 9 days, contributing to an average humidity of a crisp 86%.
In December in Mexico, the average temperature is 2°C (35°F). The maximum can reach 17°C (63°F), while the minimum can drop as low as -22°C (-8°F). Be prepared for a wide range of temperatures, making it essential to dress in layers for your travels.
In Mexico in December, the total precipitation amount is 67 mm (2.6 in), occurring over a span of 9 days.
In Mexico in December humidity is 86%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable as your clothes cling to you and the cold air cuts through any warmth you try to find.
In Mexico in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Mexico, you can visit Hourly UV Index in Mexico.
UV Risk Categories
Weather in Mexico varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mexico, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 76 mm (3.0 inches) | 85% | moderate |
| February Weather | -1°C (31°F) | 81 mm (3.2 inches) | 85% | moderate |
| March Weather | 5°C (41°F) | 103 mm (4.0 inches) | 86% | high |
| April Weather | 10°C (51°F) | 93 mm (3.7 inches) | 87% | very high |
| May Weather | 17°C (63°F) | 151 mm (5.9 inches) | 81% | very high |
| June Weather | 23°C (73°F) | 107 mm (4.2 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 105 mm (4.2 inches) | 81% | very high |
| August Weather | 23°C (73°F) | 107 mm (4.2 inches) | 79% | very high |
| September Weather | 20°C (69°F) | 65 mm (2.6 inches) | 78% | very high |
| October Weather | 14°C (57°F) | 102 mm (4.0 inches) | 81% | high |
| November Weather | 5°C (41°F) | 81 mm (3.2 inches) | 89% | moderate |
| December Weather | 2°C (35°F) | 67 mm (2.6 inches) | 86% | low |