Last updated: August 23, 2025
In December, the average temperature in San Bernardo, Italy is a chilly -9°C (16°F). Temperatures can dip as low as -27°C (-15°F) and rise to a maximum of 4°C (39°F). Expect 105 mm (4.1 in) of precipitation spread over 11 days, with an average humidity of 90% creating a notably crisp atmosphere.
In December in San Bernardo, the average temperature is -9°C (16°F). The maximum can reach 4°C (39°F) and the minimum can be as low as -27°C (-15°F). Be prepared for extremely cold weather and dress warmly if you're planning to travel during this time.
In San Bernardo in December, the precipitation amount is 105 mm (4.1 in) over the course of 11 days.
In San Bernardo in December, humidity is 90%. With an average temperature of -9°C (16°F), this humidity feels like a challenging mix of bone-chilling cold and dampness that makes traveling outside uncomfortable, as the frigid air clings to your skin and can quickly sap your warmth, leaving you yearning for indoor comforts.
In San Bernardo 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 San Bernardo, you can visit 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 | -10°C (13°F) | 44 mm (1.8 inches) | 93% | low |
| February Weather | -7°C (20°F) | 46 mm (1.8 inches) | 89% | moderate |
| March Weather | -4°C (25°F) | 59 mm (2.3 inches) | 86% | high |
| April Weather | 1°C (34°F) | 96 mm (3.8 inches) | 83% | high |
| May Weather | 5°C (42°F) | 146 mm (5.8 inches) | 78% | very high |
| June Weather | 11°C (52°F) | 179 mm (7.1 inches) | 79% | very high |
| July Weather | 12°C (53°F) | 233 mm (9.2 inches) | 82% | very high |
| August Weather | 12°C (53°F) | 229 mm (9.0 inches) | 80% | very high |
| September Weather | 8°C (46°F) | 140 mm (5.5 inches) | 83% | high |
| October Weather | 4°C (39°F) | 124 mm (4.9 inches) | 90% | moderate |
| November Weather | -3°C (27°F) | 136 mm (5.4 inches) | 89% | moderate |
| December Weather | -9°C (16°F) | 105 mm (4.1 inches) | 90% | low |