Last updated: August 23, 2025
In December, the average temperature in San Marco, Italy hovers around 10°C (51°F). Expect a minimum of 4°C (40°F) and a maximum of 17°C (63°F). This month brings 74 mm (2.9 in) of precipitation spread over about 11 days, and with an average humidity of 86%, make sure to stay prepared for the wet conditions!
In December in San Marco, the average temperature is 10°C (51°F), with maximums reaching up to 17°C (63°F) and minimums dropping as low as 4°C (40°F). This mild climate makes San Marco a pleasant destination for travelers seeking comfortable weather.
In San Marco in December, the precipitation amount is 74 mm (2.9 in) spread over the course of 11 days.
In San Marco in December humidity is 86%. With an average temperature of 10°C (51°F), this humidity feels like a cool, damp blanket enveloping you, making traveling feel invigorating yet slightly uncomfortable without the right layers.
In San Marco 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 Marco, you can visit Hourly UV Index in San Marco.
UV Risk Categories
Weather in San Marco varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Marco, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (47°F) | 49 mm (1.9 inches) | 85% | low |
| February Weather | 9°C (49°F) | 57 mm (2.2 inches) | 78% | moderate |
| March Weather | 10°C (51°F) | 59 mm (2.3 inches) | 69% | high |
| April Weather | 14°C (57°F) | 39 mm (1.5 inches) | 71% | high |
| May Weather | 18°C (65°F) | 62 mm (2.5 inches) | 71% | very high |
| June Weather | 23°C (74°F) | 13 mm (0.5 inches) | 63% | very high |
| July Weather | 26°C (79°F) | 33 mm (1.3 inches) | 59% | very high |
| August Weather | 26°C (80°F) | 20 mm (0.8 inches) | 54% | very high |
| September Weather | 22°C (72°F) | 65 mm (2.6 inches) | 67% | high |
| October Weather | 18°C (64°F) | 44 mm (1.7 inches) | 78% | moderate |
| November Weather | 14°C (58°F) | 98 mm (3.9 inches) | 84% | moderate |
| December Weather | 10°C (51°F) | 74 mm (2.9 inches) | 86% | low |