Last updated: August 23, 2025
In San Giacomo, Italy, the average temperature in September hovers around 19°C (67°F), offering a comfortable climate. You'll experience minimums of 9°C (48°F) and maximums soaring to 31°C (89°F). Expect an average precipitation of 84 mm (3.3 in) spread across 8 days, and enjoy a pleasant average humidity of 68%.
In September in San Giacomo, the average temperature is 19°C (67°F). Maximums can reach 31°C (89°F), and minimums can be as low as 9°C (48°F). This climate makes San Giacomo an ideal destination for travelers seeking pleasant weather during this month.
In San Giacomo in September, the precipitation amount is 84 mm (3.3 in) spread over 8 days.
In San Giacomo in September, humidity is 68%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket, making travel pleasant yet slightly muggy, which can be refreshing while exploring but may require occasional breaks to stay comfortable.
In San Giacomo in September, 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 Giacomo.
UV Risk Categories
Weather in San Giacomo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Giacomo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 75 mm (2.9 inches) | 78% | moderate |
| February Weather | 6°C (44°F) | 92 mm (3.6 inches) | 71% | moderate |
| March Weather | 7°C (46°F) | 103 mm (4.1 inches) | 70% | high |
| April Weather | 11°C (52°F) | 73 mm (2.9 inches) | 73% | very high |
| May Weather | 15°C (60°F) | 53 mm (2.1 inches) | 72% | very high |
| June Weather | 20°C (68°F) | 39 mm (1.5 inches) | 67% | very high |
| July Weather | 23°C (73°F) | 19 mm (0.7 inches) | 64% | very high |
| August Weather | 24°C (75°F) | 30 mm (1.2 inches) | 61% | very high |
| September Weather | 19°C (67°F) | 84 mm (3.3 inches) | 68% | very high |
| October Weather | 14°C (58°F) | 112 mm (4.4 inches) | 73% | high |
| November Weather | 11°C (52°F) | 171 mm (6.7 inches) | 77% | moderate |
| December Weather | 7°C (44°F) | 80 mm (3.1 inches) | 78% | low |