Last updated: August 23, 2025
In San Giuliano Terme, Italy, the average temperature for December hovers around 7°C (46°F). Expect a chilly minimum of -3°C (27°F) and a mild maximum of 17°C (62°F). This month also sees about 173 mm (6.8 in) of precipitation spread over 15 days, contributing to an average humidity of 83%.
In December in San Giuliano Terme, the average temperature is 7°C (46°F), with maximums reaching 17°C (62°F) and minimums dipping as low as -3°C (27°F). Travelers should be prepared for a range of temperatures, bringing both warm and cold weather clothing.
In San Giuliano Terme in December, the precipitation amount is 173 mm (6.8 in) during a span of 15 days.
In San Giuliano Terme in December humidity is 83%. With average temperature 7°C (46°F), this humidity feels like a damp chill that seeps into your clothes, making every outdoor excursion feel heavier and less invigorating, requiring a thicker jacket and a more cautious step as you navigate the slightly slippery terrain.
In San Giuliano Terme 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 Terme, you can visit Hourly UV Index in San Giuliano Terme.
UV Risk Categories
Weather in San Giuliano Terme varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Giuliano Terme, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (43°F) | 70 mm (2.8 inches) | 84% | low |
| February Weather | 8°C (47°F) | 96 mm (3.8 inches) | 76% | moderate |
| March Weather | 10°C (50°F) | 82 mm (3.2 inches) | 68% | high |
| April Weather | 13°C (56°F) | 104 mm (4.1 inches) | 70% | high |
| May Weather | 17°C (63°F) | 104 mm (4.1 inches) | 69% | very high |
| June Weather | 22°C (72°F) | 49 mm (1.9 inches) | 62% | very high |
| July Weather | 24°C (76°F) | 35 mm (1.4 inches) | 57% | very high |
| August Weather | 25°C (77°F) | 32 mm (1.2 inches) | 55% | very high |
| September Weather | 21°C (70°F) | 97 mm (3.8 inches) | 66% | high |
| October Weather | 16°C (61°F) | 116 mm (4.6 inches) | 79% | moderate |
| November Weather | 11°C (53°F) | 153 mm (6.0 inches) | 84% | moderate |
| December Weather | 7°C (46°F) | 173 mm (6.8 inches) | 83% | low |