Last updated: August 23, 2025
In September, the average temperature in San Costantino, Italy is a pleasant 23°C (74°F). Expect minimums of 16°C (61°F) and maximums reaching 29°C (84°F), making it a comfortable time to visit. However, be prepared for 50 mm (2.0 in) of precipitation over 8 days, contributing to an average humidity of 68%. Whether you're exploring the outdoors or enjoying local culture, enjoy the vibrant atmosphere this month has to offer!
In September in San Costantino, the average temperature is 23°C (74°F). The maximum can reach 29°C (84°F), and the minimum can be as low as 16°C (61°F). This pleasant weather makes San Costantino an ideal destination for travelers seeking a comfortable climate.
In San Costantino in September, the total precipitation amount is 50 mm (2.0 in) spread over 8 days.
In San Costantino in September, humidity is 68%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making traveling quite uncomfortable if you're not prepared. The air is thick and muggy, leaving you yearning for a cool breeze and frequent breaks in the shade.
In San Costantino 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 Costantino.
UV Risk Categories
Weather in San Costantino varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Costantino, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 11°C (52°F) | 106 mm (4.2 inches) | 78% | moderate |
| February Weather | 12°C (53°F) | 90 mm (3.6 inches) | 71% | moderate |
| March Weather | 12°C (54°F) | 96 mm (3.8 inches) | 70% | high |
| April Weather | 14°C (58°F) | 48 mm (1.9 inches) | 73% | very high |
| May Weather | 17°C (64°F) | 36 mm (1.4 inches) | 72% | very high |
| June Weather | 22°C (71°F) | 38 mm (1.5 inches) | 67% | very high |
| July Weather | 24°C (76°F) | 26 mm (1.0 inches) | 64% | very high |
| August Weather | 25°C (78°F) | 24 mm (0.9 inches) | 61% | very high |
| September Weather | 23°C (74°F) | 50 mm (2.0 inches) | 68% | very high |
| October Weather | 19°C (67°F) | 94 mm (3.7 inches) | 73% | high |
| November Weather | 17°C (62°F) | 138 mm (5.4 inches) | 77% | moderate |
| December Weather | 13°C (56°F) | 170 mm (6.7 inches) | 78% | moderate |