Last updated: August 23, 2025
In December, the average temperature in Castel del Monte, Italy hovers around 4°C (39°F). Expect chilly nights with a minimum temperature plummeting to -13°C (8°F), while daytime highs can reach a mild 14°C (58°F). With an average precipitation of 108 mm (4.3 in) spread over 12 days, you might want to bring an umbrella! Additionally, the average humidity is a brisk 86%, adding to the frosty ambiance.
In December in Castel del Monte, the average temperature is 4°C (39°F), with maximums reaching 14°C (58°F) and minimums dropping as low as -13°C (8°F). It's advisable to pack warm clothing and be prepared for chilly weather if you're planning to travel during this time.
In Castel del Monte in December, the precipitation amount is 108 mm (4.3 in) over the course of 12 days.
In Castel del Monte in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.
In Castel del Monte 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 del Monte, you can visit Hourly UV Index in Castel del Monte.
UV Risk Categories
Weather in Castel del Monte varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castel del Monte, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (35°F) | 85 mm (3.3 inches) | 85% | moderate |
| February Weather | 4°C (40°F) | 73 mm (2.9 inches) | 78% | moderate |
| March Weather | 5°C (42°F) | 94 mm (3.7 inches) | 69% | high |
| April Weather | 9°C (49°F) | 82 mm (3.2 inches) | 71% | very high |
| May Weather | 13°C (56°F) | 113 mm (4.4 inches) | 71% | very high |
| June Weather | 18°C (65°F) | 52 mm (2.0 inches) | 63% | very high |
| July Weather | 20°C (69°F) | 45 mm (1.8 inches) | 59% | very high |
| August Weather | 21°C (70°F) | 49 mm (1.9 inches) | 54% | very high |
| September Weather | 16°C (62°F) | 59 mm (2.3 inches) | 67% | very high |
| October Weather | 12°C (53°F) | 79 mm (3.1 inches) | 78% | high |
| November Weather | 8°C (46°F) | 147 mm (5.8 inches) | 84% | moderate |
| December Weather | 4°C (39°F) | 108 mm (4.3 inches) | 86% | low |