Last updated: August 23, 2025
In December, the average temperature in Castello di Cisterna, Italy sits at a cool 9°C (48°F), with minimums dropping to -2°C (29°F) and maximums reaching 18°C (64°F). Expect precipitation of around 181 mm (7.1 in) over approximately 13 days, while the air maintains a high humidity level of 84%.
In December in Castello di Cisterna, the average temperature is 9°C (48°F), with maximums reaching 18°C (64°F) and minimums dropping to as low as -2°C (29°F). It’s advisable to pack layers to stay comfortable during your travels, as the weather can vary significantly throughout the day.
In Castello di Cisterna in December, the total precipitation amount is 181 mm (7.1 in) spread over 13 days.
In Castello di Cisterna in December, humidity is 84%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that envelops you, making it essential to dress in layers and stay active, as the moisture in the air can quickly lead to discomfort while traveling.
In Castello di Cisterna 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 Castello di Cisterna, you can visit Hourly UV Index in Castello di Cisterna.
UV Risk Categories
Weather in Castello di Cisterna varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castello di Cisterna, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (44°F) | 99 mm (3.9 inches) | 84% | moderate |
| February Weather | 9°C (48°F) | 138 mm (5.4 inches) | 76% | moderate |
| March Weather | 10°C (50°F) | 119 mm (4.7 inches) | 69% | high |
| April Weather | 13°C (56°F) | 76 mm (3.0 inches) | 70% | very high |
| May Weather | 17°C (63°F) | 88 mm (3.5 inches) | 70% | very high |
| June Weather | 22°C (72°F) | 42 mm (1.6 inches) | 61% | very high |
| July Weather | 25°C (77°F) | 24 mm (0.9 inches) | 57% | very high |
| August Weather | 25°C (78°F) | 27 mm (1.1 inches) | 53% | very high |
| September Weather | 21°C (70°F) | 109 mm (4.3 inches) | 65% | very high |
| October Weather | 16°C (62°F) | 110 mm (4.3 inches) | 75% | high |
| November Weather | 13°C (55°F) | 250 mm (9.8 inches) | 81% | moderate |
| December Weather | 9°C (48°F) | 181 mm (7.1 inches) | 84% | low |