Last updated: August 23, 2025
In December, the average temperature in San Martino, Italy hovers around 5°C (42°F). Expect lows of -4°C (25°F) and highs reaching up to 16°C (61°F). This month typically sees 62 mm (2.4 in) of precipitation spread over 9 days, contributing to an average humidity of 85%. Prepare for a cool and damp atmosphere!
In December in San Martino, the average temperature is 5°C (42°F). Maximums can reach 16°C (61°F), and minimums can be as low as -4°C (25°F). It's a great time for travelers who enjoy cool weather and want to explore the area's winter scenery.
In San Martino in December, the precipitation amount is 62 mm (2.4 in) over the course of 9 days.
In San Martino in December, humidity is 85%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and requiring extra layers to stay warm while exploring.
In San Martino 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 Martino, you can visit Hourly UV Index in San Martino.
UV Risk Categories
Weather in San Martino varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Martino, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 20 mm (0.8 inches) | 87% | low |
| February Weather | 7°C (45°F) | 62 mm (2.4 inches) | 79% | moderate |
| March Weather | 10°C (50°F) | 45 mm (1.8 inches) | 69% | moderate |
| April Weather | 14°C (58°F) | 63 mm (2.5 inches) | 71% | high |
| May Weather | 19°C (67°F) | 105 mm (4.1 inches) | 70% | very high |
| June Weather | 25°C (77°F) | 57 mm (2.3 inches) | 65% | very high |
| July Weather | 27°C (80°F) | 82 mm (3.2 inches) | 61% | very high |
| August Weather | 27°C (80°F) | 57 mm (2.3 inches) | 54% | very high |
| September Weather | 21°C (71°F) | 104 mm (4.1 inches) | 66% | high |
| October Weather | 16°C (61°F) | 61 mm (2.4 inches) | 83% | moderate |
| November Weather | 11°C (52°F) | 100 mm (3.9 inches) | 88% | moderate |
| December Weather | 5°C (42°F) | 62 mm (2.4 inches) | 85% | low |