Last updated: August 27, 2025
In December, the average temperature in San Bernardo, Mexico is a pleasant 15°C (59°F). However, be prepared for fluctuations, as temperatures can drop to a chilly 0°C (32°F) or soar to a warm 30°C (86°F). During this month, expect approximately 30 mm (1.2 in) of rainfall spread over about 3 days, accompanied by an average humidity level of 80%. Enjoy the varied weather!
In December in San Bernardo, the average temperature is 15°C (59°F). Maximums can reach 30°C (86°F) and minimums can be as low as 0°C (32°F). This variation makes it a great time for travelers to pack layers to comfortably enjoy the diverse weather conditions.
In San Bernardo in December, the precipitation amount is 30 mm (1.2 in) over the course of 3 days.
In San Bernardo in December, humidity is 80%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly uncomfortable and necessitating frequent breaks to stay hydrated.
In San Bernardo in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in San Bernardo, you can refer to this Hourly UV Index in San Bernardo.
UV Risk Categories
Weather in San Bernardo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Bernardo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 30 mm (1.2 inches) | 74% | high |
| February Weather | 16°C (60°F) | 31 mm (1.2 inches) | 67% | very high |
| March Weather | 19°C (66°F) | 23 mm (0.9 inches) | 60% | very high |
| April Weather | 22°C (72°F) | 1 mm (0.1 inches) | 51% | extreme |
| May Weather | 25°C (77°F) | 3 mm (0.1 inches) | 47% | extreme |
| June Weather | 28°C (83°F) | 46 mm (1.8 inches) | 50% | extreme |
| July Weather | 26°C (79°F) | 209 mm (8.2 inches) | 70% | extreme |
| August Weather | 26°C (79°F) | 156 mm (6.1 inches) | 81% | extreme |
| September Weather | 25°C (77°F) | 99 mm (3.9 inches) | 82% | extreme |
| October Weather | 24°C (75°F) | 32 mm (1.2 inches) | 78% | very high |
| November Weather | 19°C (67°F) | 44 mm (1.7 inches) | 78% | high |
| December Weather | 15°C (59°F) | 30 mm (1.2 inches) | 80% | high |