Last updated: August 23, 2025
In December, the average temperature in San Giuliano del Sannio, Italy hovers around 6°C (44°F). Expect a minimum of -4°C (25°F) and a maximum of 15°C (60°F). Be prepared for some moisture, with around 86 mm (3.4 in) of precipitation spread over 10 days. Humidity levels are notably high at 84%, contributing to a chilly yet crisp atmosphere.
In December in San Giuliano del Sannio, the average temperature is 6°C (44°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -4°C (25°F). Travelers should prepare for a mix of cool and chilly weather, making it essential to dress in layers for comfort during their visit.
In San Giuliano del Sannio in December, the precipitation amount is 86 mm (3.4 in) over the course of 10 days.
In San Giuliano del Sannio in December humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.
In San Giuliano del Sannio 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 San Giuliano del Sannio, you can visit Hourly UV Index in San Giuliano del Sannio.
UV Risk Categories
Weather in San Giuliano del Sannio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Giuliano del Sannio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 67 mm (2.6 inches) | 84% | moderate |
| February Weather | 6°C (44°F) | 80 mm (3.1 inches) | 76% | moderate |
| March Weather | 7°C (45°F) | 78 mm (3.1 inches) | 69% | high |
| April Weather | 11°C (52°F) | 69 mm (2.7 inches) | 70% | high |
| May Weather | 15°C (59°F) | 89 mm (3.5 inches) | 70% | very high |
| June Weather | 20°C (69°F) | 52 mm (2.0 inches) | 61% | very high |
| July Weather | 23°C (73°F) | 48 mm (1.9 inches) | 57% | very high |
| August Weather | 24°C (75°F) | 35 mm (1.4 inches) | 53% | very high |
| September Weather | 19°C (66°F) | 49 mm (1.9 inches) | 65% | very high |
| October Weather | 14°C (57°F) | 70 mm (2.8 inches) | 75% | high |
| November Weather | 10°C (51°F) | 128 mm (5.0 inches) | 81% | moderate |
| December Weather | 6°C (44°F) | 86 mm (3.4 inches) | 84% | low |