September weather forecast
Florence, Italy

September marks the gradual transition from hot summer days to milder autumnal weather. Although temperatures start to drop, warm weather still persists in the initial half of the month. During this month, temperatures can hover around 26.7°C (80.1°F). In contrast to the scorching heat of the summer months, the pleasant weather, combined with fewer tourists, makes September an optimal time to explore the city's architectural treasures.

Temperature

The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a hot 31.5°C (88.7°F) in August to a warm 26.7°C (80.1°F). In stark contrast to the day's heat, the temperature in Florence dips to an average of 14.4°C (57.9°F) during September nights.

Rainfall

In Florence, in September, it is raining for 6.2 days, with typically 80mm (3.15") of accumulated precipitation. Throughout the year, in Florence, Italy, there are 88.2 rainfall days, and 873mm (34.37") of precipitation is accumulated.

Daylight

The average length of the day in September in Florence is 12h and 31min.
On the first day of the month, sunrise is at 06:39 and sunset at 19:50. On the last day of September, in Florence, sunrise is at 07:11 and sunset at 18:57 CEST.

Sunshine

In Florence, Italy, the average sunshine in September is 7h.

UV index

In September, the average daily maximum UV index in Florence, Italy, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Act with care - The need to guard against sun damage is communicated. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.