Last updated: August 23, 2025
In September, the average temperature in Santo Stefano, Italy hovers around 16°C (62°F), with nighttime lows plummeting to 3°C (37°F) and daytime highs reaching up to 28°C (83°F). Expect to encounter 147 mm (5.8 in) of precipitation spread over 14 days, resulting in a relatively high average humidity of 74%. Prepare for a mix of mild temperatures and occasional rainfall!
In September in Santo Stefano, the average temperature is 16°C (62°F). Maximums can reach 28°C (83°F), and minimums can be as low as 3°C (37°F). This mild climate makes Santo Stefano an ideal destination for outdoor activities and sightseeing during this time of year.
In Santo Stefano in September, the total precipitation amount is 147 mm (5.8 in) over the course of 14 days.
In Santo Stefano in September, humidity is 74%. With an average temperature of 16°C (62°F), this humidity feels like a warm, heavy blanket enveloping you, making it slightly uncomfortable for traveling as it can lead to a sticky sensation that may sap your energy during outdoor activities.
In Santo Stefano in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Santo Stefano.
UV Risk Categories
Weather in Santo Stefano varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santo Stefano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (33°F) | 61 mm (2.4 inches) | 91% | low |
| February Weather | 3°C (38°F) | 122 mm (4.8 inches) | 87% | moderate |
| March Weather | 6°C (43°F) | 122 mm (4.8 inches) | 82% | moderate |
| April Weather | 10°C (51°F) | 173 mm (6.8 inches) | 79% | high |
| May Weather | 14°C (58°F) | 209 mm (8.2 inches) | 74% | very high |
| June Weather | 20°C (68°F) | 124 mm (4.9 inches) | 75% | very high |
| July Weather | 21°C (70°F) | 105 mm (4.1 inches) | 74% | very high |
| August Weather | 21°C (70°F) | 132 mm (5.2 inches) | 68% | very high |
| September Weather | 16°C (62°F) | 147 mm (5.8 inches) | 74% | high |
| October Weather | 12°C (53°F) | 177 mm (7.0 inches) | 88% | moderate |
| November Weather | 7°C (44°F) | 208 mm (8.2 inches) | 90% | moderate |
| December Weather | 2°C (36°F) | 194 mm (7.6 inches) | 89% | low |