Last updated: August 23, 2025
In December, the average temperature in San Piero a Sieve, Italy hovers around 5°C (41°F). Expect chilly nights with a minimum of -4°C (25°F), while daytime highs can reach up to 14°C (58°F). With an average humidity of 83%, it's often a moist month, as 116 mm (4.6 in) of precipitation falls over approximately 13 days. Prepare accordingly if you're planning to visit!
In December in San Piero a Sieve, the average temperature is 5°C (41°F), with maximums reaching up to 14°C (58°F) and minimums dipping as low as -4°C (25°F). Be prepared for chilly weather and pack layers to stay comfortable during your travels.
In San Piero a Sieve in December, the total precipitation amount reaches 116 mm (4.6 in) over the course of 13 days.
In San Piero a Sieve in December humidity is 83%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm and dry.
In San Piero a Sieve 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 Piero a Sieve, you can visit Hourly UV Index in San Piero a Sieve.
UV Risk Categories
Weather in San Piero a Sieve varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Piero a Sieve, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 43 mm (1.7 inches) | 84% | low |
| February Weather | 6°C (43°F) | 90 mm (3.5 inches) | 76% | moderate |
| March Weather | 8°C (46°F) | 68 mm (2.7 inches) | 68% | high |
| April Weather | 11°C (52°F) | 79 mm (3.1 inches) | 70% | high |
| May Weather | 15°C (59°F) | 101 mm (4.0 inches) | 69% | very high |
| June Weather | 20°C (69°F) | 43 mm (1.7 inches) | 62% | very high |
| July Weather | 23°C (73°F) | 41 mm (1.6 inches) | 57% | very high |
| August Weather | 23°C (74°F) | 31 mm (1.2 inches) | 55% | very high |
| September Weather | 19°C (66°F) | 56 mm (2.2 inches) | 66% | high |
| October Weather | 14°C (57°F) | 77 mm (3.0 inches) | 79% | moderate |
| November Weather | 9°C (49°F) | 133 mm (5.2 inches) | 84% | moderate |
| December Weather | 5°C (41°F) | 116 mm (4.6 inches) | 83% | low |