Last updated: August 27, 2025
In December, the average temperature in San Jeronimo Caleras, Mexico is a comfortable 18°C (65°F), with a minimum of 4°C (39°F) and a maximum of 31°C (87°F). Expect a modest precipitation amount of only 3 mm (0.1 in) over 0 days of rain, coupled with a high average humidity of 88%. Enjoy the mild climate!
In December in San Jeronimo Caleras, the average temperature is 18°C (65°F). The maximum can reach 31°C (87°F) and the minimum can be as low as 4°C (39°F). This means travelers should be prepared for a range of temperatures, ensuring they pack both light clothing for warmer days and warmer layers for cooler evenings.
In San Jeronimo Caleras in December, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.
In San Jeronimo Caleras in December, humidity is 88%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly sticky and the air thick, which can be quite tiring when exploring the area.
In San Jeronimo Caleras in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Jeronimo Caleras.
UV Risk Categories
Weather in San Jeronimo Caleras varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Jeronimo Caleras, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 18°C (65°F) | 2 mm (0.1 inches) | 84% | very high |
| February Weather | 20°C (68°F) | 3 mm (0.1 inches) | 78% | extreme |
| March Weather | 22°C (72°F) | 6 mm (0.2 inches) | 75% | extreme |
| April Weather | 23°C (74°F) | 18 mm (0.7 inches) | 70% | extreme |
| May Weather | 24°C (75°F) | 83 mm (3.3 inches) | 77% | extreme |
| June Weather | 22°C (72°F) | 201 mm (7.9 inches) | 76% | extreme |
| July Weather | 22°C (71°F) | 153 mm (6.0 inches) | 68% | extreme |
| August Weather | 22°C (71°F) | 216 mm (8.5 inches) | 70% | extreme |
| September Weather | 21°C (70°F) | 290 mm (11.4 inches) | 82% | extreme |
| October Weather | 21°C (70°F) | 108 mm (4.2 inches) | 91% | extreme |
| November Weather | 20°C (68°F) | 24 mm (1.0 inches) | 89% | very high |
| December Weather | 18°C (65°F) | 3 mm (0.1 inches) | 88% | very high |