Last updated: August 23, 2025
In Porossan, Italy, the average temperature in December hovers around -8°C (18°F), with extremes ranging from a frigid -23°C (-9°F) to a milder 4°C (39°F). Expect 165 mm (6.5 in) of precipitation spread over 17 days, and brace for a high average humidity of 90%.
In December in Porossan, the average temperature hovers around -8°C (18°F), with maximums peaking at 4°C (39°F) and minimums plunging as low as -23°C (-9°F). It's advisable to bundle up and prepare for chilly conditions if you're planning to travel during this time.
In Porossan in December, the precipitation amount reaches 165 mm (6.5 in) over a span of 17 days.
In Porossan in December, humidity is 90%. With an average temperature of -8°C (18°F), this humidity feels like an icy fog wrapping around you, making every breath sharp and crisp, and requiring careful planning for travel to avoid the chill while navigating the damp air.
In Porossan 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 Porossan, you can visit Hourly UV Index in Porossan.
UV Risk Categories
Weather in Porossan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Porossan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 114 mm (4.5 inches) | 91% | moderate |
| February Weather | -6°C (22°F) | 79 mm (3.1 inches) | 87% | moderate |
| March Weather | -4°C (25°F) | 106 mm (4.2 inches) | 84% | very high |
| April Weather | 0°C (32°F) | 83 mm (3.3 inches) | 83% | very high |
| May Weather | 4°C (40°F) | 144 mm (5.7 inches) | 78% | very high |
| June Weather | 10°C (50°F) | 104 mm (4.1 inches) | 75% | extreme |
| July Weather | 12°C (55°F) | 98 mm (3.9 inches) | 72% | extreme |
| August Weather | 12°C (54°F) | 101 mm (4.0 inches) | 63% | very high |
| September Weather | 8°C (47°F) | 64 mm (2.5 inches) | 73% | very high |
| October Weather | 4°C (39°F) | 124 mm (4.9 inches) | 89% | high |
| November Weather | -3°C (27°F) | 117 mm (4.6 inches) | 90% | moderate |
| December Weather | -8°C (18°F) | 165 mm (6.5 inches) | 90% | low |