Last updated: August 26, 2025
In December, the average temperature in San Jose de Morteros, Mexico is a mild 13°C (56°F). However, be prepared for a wide range of conditions—temperatures can dip as low as -6°C (21°F) and soar to a warm 29°C (84°F). Expect around 9 mm (0.4 in) of precipitation over 2 days, and stay comfortable with an average humidity level of 84%.
In December in San Jose de Morteros, the average temperature is 13°C (56°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as -6°C (21°F). This variability makes it essential to pack for both warm and cold weather when traveling during this time.
In San Jose de Morteros in December, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.
In San Jose de Morteros in December, humidity is 84%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel cooler and more uncomfortable for traveling, as the air clings to your skin and weighs you down with a sense of heaviness.
In San Jose de Morteros in December, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in San Jose de Morteros.
UV Risk Categories
Weather in San Jose de Morteros varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Jose de Morteros, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (56°F) | 15 mm (0.6 inches) | 70% | very high |
| February Weather | 16°C (61°F) | 13 mm (0.5 inches) | 62% | very high |
| March Weather | 19°C (67°F) | 9 mm (0.3 inches) | 53% | extreme |
| April Weather | 22°C (71°F) | 11 mm (0.4 inches) | 48% | extreme |
| May Weather | 24°C (75°F) | 15 mm (0.6 inches) | 52% | extreme |
| June Weather | 24°C (75°F) | 49 mm (1.9 inches) | 64% | extreme |
| July Weather | 22°C (72°F) | 110 mm (4.3 inches) | 73% | extreme |
| August Weather | 22°C (73°F) | 56 mm (2.2 inches) | 71% | extreme |
| September Weather | 20°C (69°F) | 119 mm (4.7 inches) | 82% | extreme |
| October Weather | 19°C (67°F) | 49 mm (1.9 inches) | 83% | extreme |
| November Weather | 16°C (61°F) | 11 mm (0.4 inches) | 82% | very high |
| December Weather | 13°C (56°F) | 9 mm (0.4 inches) | 84% | high |