Last updated: August 23, 2025
In September, the average temperature in San Colombano, Italy hovers around 16°C (61°F). Expect cool nights with a minimum of 5°C (42°F), while daytime temperatures can rise to a pleasant 25°C (77°F). Be prepared for a bit of rain, as the area sees an average precipitation of 139 mm (5.5 in) over 16 days—perfect for those cozy, indoor moments. With an average humidity of 66%, the air carries a refreshing feel, making San Colombano a delightful destination this time of year.
In September in San Colombano, the average temperature is 16°C (61°F). Maximums can reach 25°C (77°F) and minimums can be as low as 5°C (42°F). This mild climate makes it a perfect time for travelers to explore and enjoy outdoor activities.
In San Colombano in September, the total precipitation amount is 139 mm (5.5 in) spread over 16 days.
In San Colombano in September humidity is 66%. With an average temperature of 16°C (61°F), this humidity feels like a heavy blanket enveloping you, making travel somewhat uncomfortable as the air grows sticky and tedious, slightly sapping your energy as you explore.
In San Colombano 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 San Colombano.
UV Risk Categories
Weather in San Colombano varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Colombano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 32 mm (1.3 inches) | 87% | low |
| February Weather | 3°C (38°F) | 54 mm (2.1 inches) | 79% | moderate |
| March Weather | 6°C (42°F) | 85 mm (3.4 inches) | 69% | moderate |
| April Weather | 10°C (49°F) | 131 mm (5.1 inches) | 71% | high |
| May Weather | 14°C (57°F) | 175 mm (6.9 inches) | 70% | very high |
| June Weather | 19°C (66°F) | 138 mm (5.4 inches) | 65% | very high |
| July Weather | 20°C (68°F) | 138 mm (5.4 inches) | 61% | very high |
| August Weather | 20°C (69°F) | 145 mm (5.7 inches) | 54% | very high |
| September Weather | 16°C (61°F) | 139 mm (5.5 inches) | 66% | high |
| October Weather | 12°C (53°F) | 147 mm (5.8 inches) | 83% | moderate |
| November Weather | 7°C (45°F) | 152 mm (6.0 inches) | 88% | moderate |
| December Weather | 2°C (37°F) | 100 mm (3.9 inches) | 85% | low |