Last updated: August 23, 2025
In September, the average temperature in San Martino in Trignano, Italy is a pleasant 18°C (65°F). Expect a minimum chill of 5°C (42°F) and highs reaching up to 31°C (89°F). With an average precipitation of 91 mm (3.6 in) over 8 days, and humidity levels around 67%, it's a month to enjoy a mix of sunshine and refreshing rain.
In September, in San Martino in Trignano, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 31°C (89°F), while the minimum can drop as low as 5°C (42°F). This variety in temperatures makes San Martino in Trignano an ideal destination for travelers looking to enjoy both warm days and cooler evenings.
In San Martino in Trignano in September, the total precipitation amount is 91 mm (3.6 in) over the course of 8 days.
In San Martino in Trignano in September humidity is 67%. With an average temperature of 18°C (65°F), this humidity feels like a mild blanket wrapping around you, making outdoor activities feel pleasantly refreshing, yet you may find yourself reaching for a drink more often to stay hydrated while exploring the sights.
In San Martino in Trignano 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 Martino in Trignano.
UV Risk Categories
Weather in San Martino in Trignano varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Martino in Trignano, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (39°F) | 61 mm (2.4 inches) | 85% | moderate |
| February Weather | 6°C (43°F) | 73 mm (2.9 inches) | 78% | moderate |
| March Weather | 7°C (45°F) | 91 mm (3.6 inches) | 69% | high |
| April Weather | 11°C (52°F) | 71 mm (2.8 inches) | 71% | high |
| May Weather | 15°C (60°F) | 96 mm (3.8 inches) | 71% | very high |
| June Weather | 21°C (69°F) | 43 mm (1.7 inches) | 63% | very high |
| July Weather | 23°C (74°F) | 28 mm (1.1 inches) | 59% | very high |
| August Weather | 24°C (75°F) | 39 mm (1.6 inches) | 54% | very high |
| September Weather | 18°C (65°F) | 91 mm (3.6 inches) | 67% | very high |
| October Weather | 14°C (57°F) | 62 mm (2.4 inches) | 78% | moderate |
| November Weather | 10°C (50°F) | 126 mm (5.0 inches) | 84% | moderate |
| December Weather | 5°C (42°F) | 134 mm (5.3 inches) | 86% | low |