Last updated: August 23, 2025
In December, the average temperature in San Massimo, Italy hovers around 5°C (42°F), with minimums dipping as low as -5°C (23°F) and maximums reaching up to 14°C (57°F). Prepare for moisture, as average precipitation totals 128 mm (5.0 in) over about 13 days, and expect the air to feel quite humid with an average humidity level of 84%.
In December in San Massimo, the average temperature is 5°C (42°F), with maximums reaching 14°C (57°F) and minimums dropping as low as -5°C (23°F). Be prepared for a chilly climate, and pack layers to stay comfortable during your travels.
In San Massimo in December, the precipitation amount is 128 mm (5.0 in) spread over 13 days.
In San Massimo in December, humidity is 84%. With an average temperature of 5°C (42°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier while traveling.
In San Massimo 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 Massimo, you can visit Hourly UV Index in San Massimo.
UV Risk Categories
Weather in San Massimo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Massimo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 80 mm (3.1 inches) | 84% | moderate |
| February Weather | 6°C (42°F) | 103 mm (4.1 inches) | 76% | moderate |
| March Weather | 7°C (44°F) | 92 mm (3.6 inches) | 69% | high |
| April Weather | 10°C (50°F) | 79 mm (3.1 inches) | 70% | very high |
| May Weather | 14°C (58°F) | 100 mm (3.9 inches) | 70% | very high |
| June Weather | 19°C (67°F) | 65 mm (2.6 inches) | 61% | very high |
| July Weather | 22°C (71°F) | 52 mm (2.0 inches) | 57% | very high |
| August Weather | 23°C (73°F) | 38 mm (1.5 inches) | 53% | very high |
| September Weather | 18°C (64°F) | 68 mm (2.7 inches) | 65% | very high |
| October Weather | 13°C (56°F) | 87 mm (3.4 inches) | 75% | high |
| November Weather | 9°C (49°F) | 178 mm (7.0 inches) | 81% | moderate |
| December Weather | 5°C (42°F) | 128 mm (5.0 inches) | 84% | low |