Last updated: August 23, 2025
In May, the average temperature in San Giacomo, Italy is a comfortable 13°C (55°F). However, temperatures can range from a chilly -2°C (29°F) to a warm 26°C (78°F). Be prepared for precipitation of 124 mm (4.9 in) over approximately 16 days, and expect a relatively high humidity level of 78%. Stay comfortable and enjoy your time!
In May in San Giacomo, the average temperature is 13°C (55°F). Maximums can reach 26°C (78°F) while minimums can drop as low as -2°C (29°F). This fluctuation makes it essential to pack layers for a comfortable trip.
In San Giacomo in May, the precipitation amount is 124 mm (4.9 in) occurring over a period of 16 days.
In San Giacomo in May, humidity is 78%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket enveloping you, making outdoor activities feel steamy and your clothes cling uncomfortably, often leaving you longing for a cool breeze or an air-conditioned escape while exploring.
In San Giacomo in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Giacomo.
UV Risk Categories
Weather in San Giacomo varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Giacomo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 50 mm (2.0 inches) | 93% | low |
| February Weather | 2°C (36°F) | 62 mm (2.4 inches) | 89% | moderate |
| March Weather | 5°C (41°F) | 72 mm (2.8 inches) | 86% | high |
| April Weather | 9°C (49°F) | 102 mm (4.0 inches) | 83% | high |
| May Weather | 13°C (55°F) | 124 mm (4.9 inches) | 78% | very high |
| June Weather | 18°C (64°F) | 71 mm (2.8 inches) | 79% | very high |
| July Weather | 19°C (66°F) | 73 mm (2.9 inches) | 82% | very high |
| August Weather | 19°C (66°F) | 94 mm (3.7 inches) | 80% | very high |
| September Weather | 15°C (59°F) | 78 mm (3.1 inches) | 83% | high |
| October Weather | 11°C (51°F) | 141 mm (5.6 inches) | 90% | moderate |
| November Weather | 5°C (41°F) | 143 mm (5.6 inches) | 89% | moderate |
| December Weather | 0°C (33°F) | 105 mm (4.1 inches) | 90% | low |