Last updated: August 23, 2025
In Castel di Ieri, Italy, the average temperature in December hovers around 3°C (37°F), with a notable range from a brisk -9°C (17°F) to a milder 13°C (55°F). Expect precipitation of approximately 126 mm (4.9 in), over 12 days, contributing to a humidity level of 84%—ideal for a cozy, atmospheric experience.
In December in Castel di Ieri, the average temperature is 3°C (37°F). Maximums can reach 13°C (55°F), while minimums can be as low as -9°C (17°F). Be sure to pack warm clothing and prepare for chilly conditions if you plan to travel during this time.
In Castel di Ieri in December, the precipitation amount is 126 mm (4.9 in) spread over a span of 12 days.
In Castel di Ieri in December humidity is 84%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions brisk and invigorating, yet requiring extra layers to stay comfortable.
In Castel di Ieri 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 Castel di Ieri, you can visit Hourly UV Index in Castel di Ieri.
UV Risk Categories
Weather in Castel di Ieri varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castel di Ieri, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 84 mm (3.3 inches) | 84% | moderate |
| February Weather | 3°C (38°F) | 83 mm (3.3 inches) | 76% | moderate |
| March Weather | 4°C (40°F) | 94 mm (3.7 inches) | 69% | high |
| April Weather | 8°C (47°F) | 85 mm (3.3 inches) | 70% | very high |
| May Weather | 12°C (54°F) | 105 mm (4.1 inches) | 70% | very high |
| June Weather | 18°C (64°F) | 53 mm (2.1 inches) | 61% | extreme |
| July Weather | 20°C (69°F) | 35 mm (1.4 inches) | 57% | very high |
| August Weather | 21°C (70°F) | 40 mm (1.6 inches) | 53% | very high |
| September Weather | 16°C (61°F) | 69 mm (2.7 inches) | 65% | very high |
| October Weather | 11°C (52°F) | 79 mm (3.1 inches) | 75% | high |
| November Weather | 7°C (45°F) | 160 mm (6.3 inches) | 81% | moderate |
| December Weather | 3°C (37°F) | 126 mm (4.9 inches) | 84% | low |