Last updated: August 23, 2025
In December, the average temperature in Castelsilano, Italy is a brisk 7°C (45°F). Expect minimum temperatures to dip as low as -2°C (29°F), while maximums can reach a pleasant 17°C (63°F). With precipitation averaging 89 mm (3.5 in) over approximately 14 days, and an average humidity level of 78%, it's wise to prepare for a mix of cool weather and occasional showers.
In December in Castelsilano, the average temperature is 7°C (45°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -2°C (29°F). Be prepared for a mix of cool and mild weather, making it a great time for exploration with the right layering of clothing.
In Castelsilano in December, the precipitation amount is 89 mm (3.5 in) over a span of 14 days.
In Castelsilano in December, humidity is 78%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and necessitating cozy, layered clothing for comfort while traveling.
In Castelsilano in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Castelsilano, you can check the information here.
UV Risk Categories
Weather in Castelsilano varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castelsilano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 76 mm (3.0 inches) | 78% | moderate |
| February Weather | 7°C (45°F) | 90 mm (3.5 inches) | 71% | moderate |
| March Weather | 8°C (47°F) | 113 mm (4.4 inches) | 70% | high |
| April Weather | 11°C (53°F) | 94 mm (3.7 inches) | 73% | very high |
| May Weather | 16°C (60°F) | 78 mm (3.1 inches) | 72% | very high |
| June Weather | 20°C (69°F) | 89 mm (3.5 inches) | 67% | very high |
| July Weather | 23°C (74°F) | 50 mm (2.0 inches) | 64% | very high |
| August Weather | 24°C (75°F) | 56 mm (2.2 inches) | 61% | very high |
| September Weather | 19°C (67°F) | 88 mm (3.5 inches) | 68% | very high |
| October Weather | 15°C (59°F) | 152 mm (6.0 inches) | 73% | high |
| November Weather | 11°C (53°F) | 170 mm (6.7 inches) | 77% | moderate |
| December Weather | 7°C (45°F) | 89 mm (3.5 inches) | 78% | moderate |