Last updated: August 27, 2025
In December, the average temperature in San Bernardo, Mexico hovers around 11°C (52°F), with extremes ranging from a chilly -5°C (23°F) to a warm 28°C (82°F). Expect light precipitation, with only 12 mm (0.5 in) over 2 days, and embrace the fresh air with an average humidity of 86%.
In December in San Bernardo, the average temperature is 11°C (52°F), with maximums reaching up to 28°C (82°F) and minimums dipping as low as -5°C (23°F). It's essential to pack for a variety of weather conditions while traveling during this month.
In San Bernardo in December, the precipitation amount is 12 mm (0.5 in) over the course of 2 days.
In San Bernardo in December humidity is 86%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting travelers to seek sheltered spots or indoor attractions to escape the uncomfortable dampness.
In San Bernardo 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 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 | 11°C (51°F) | 3 mm (0.1 inches) | 76% | high |
| February Weather | 13°C (55°F) | 7 mm (0.3 inches) | 69% | extreme |
| March Weather | 16°C (61°F) | 4 mm (0.2 inches) | 57% | extreme |
| April Weather | 19°C (67°F) | 3 mm (0.1 inches) | 49% | extreme |
| May Weather | 22°C (72°F) | 9 mm (0.3 inches) | 49% | extreme |
| June Weather | 25°C (77°F) | 33 mm (1.3 inches) | 64% | extreme |
| July Weather | 22°C (72°F) | 110 mm (4.3 inches) | 82% | extreme |
| August Weather | 22°C (73°F) | 66 mm (2.6 inches) | 87% | extreme |
| September Weather | 20°C (68°F) | 119 mm (4.7 inches) | 88% | extreme |
| October Weather | 18°C (64°F) | 42 mm (1.7 inches) | 83% | extreme |
| November Weather | 15°C (59°F) | 12 mm (0.5 inches) | 84% | very high |
| December Weather | 11°C (52°F) | 12 mm (0.5 inches) | 86% | high |