Last updated: August 23, 2025
In December, the average temperature in Orio al Serio, Italy hovers around 2°C (37°F), with a minimum dipping as low as -8°C (18°F) and a maximum reaching up to 12°C (55°F). Expect about 91 mm (3.6 in) of precipitation over 8 days, accompanied by a high average humidity of 85%. Be prepared for chilly, wet conditions!
In December in Orio al Serio, the average temperature is 2°C (37°F). The maximum can reach 12°C (55°F), while the minimum can drop as low as -8°C (18°F), so be sure to pack warm clothing and prepare for chilly conditions when traveling during this time.
In Orio al Serio in December, the total precipitation amount is 91 mm (3.6 in) over the course of 8 days.
In Orio al Serio in December, humidity is 85%. With an average temperature of 2°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions feel much colder than the thermometer suggests.
In Orio al Serio 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 Orio al Serio, you can visit Hourly UV Index in Orio al Serio.
UV Risk Categories
Weather in Orio al Serio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Orio al Serio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 33 mm (1.3 inches) | 88% | low |
| February Weather | 4°C (39°F) | 53 mm (2.1 inches) | 81% | moderate |
| March Weather | 6°C (44°F) | 83 mm (3.3 inches) | 76% | high |
| April Weather | 10°C (51°F) | 124 mm (4.9 inches) | 77% | high |
| May Weather | 15°C (59°F) | 172 mm (6.8 inches) | 74% | very high |
| June Weather | 20°C (68°F) | 148 mm (5.8 inches) | 71% | very high |
| July Weather | 21°C (70°F) | 165 mm (6.5 inches) | 67% | very high |
| August Weather | 21°C (70°F) | 160 mm (6.3 inches) | 64% | very high |
| September Weather | 17°C (62°F) | 150 mm (5.9 inches) | 74% | high |
| October Weather | 12°C (54°F) | 142 mm (5.6 inches) | 87% | moderate |
| November Weather | 7°C (45°F) | 151 mm (6.0 inches) | 88% | moderate |
| December Weather | 2°C (37°F) | 91 mm (3.6 inches) | 85% | low |