Last updated: August 23, 2025
In May, the average temperature in San Marco, Italy hovers around 18°C (65°F). Visitors can expect a range between a cool 10°C (51°F) and a warm 25°C (78°F). Be prepared for some rain, as precipitation typically totals 62 mm (2.5 in) over about 8 days. With an average humidity of 71%, it’s a good idea to pack accordingly!
In May in San Marco, the average temperature is 18°C (65°F). The maximum can reach 25°C (78°F), while the minimum can drop to as low as 10°C (51°F). This pleasant weather makes San Marco an ideal destination for travelers looking to enjoy mild temperatures and comfortable conditions.
In San Marco in May, the total precipitation amount is 62 mm (2.5 in) over the course of 8 days.
In San Marco in May humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.
In San Marco in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the 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 May’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 |