Rome
Italy
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Rome, Italy

The sun rising beautifully above the Colosseum in Rome, Italy
The sun rising beautifully above the Colosseum in Rome, Italy
September brings the mild autumn season to Rome as the average temperatures drop to the comfortable range of 15°C (59°F) to 26.7°C (80.1°F). It is one of the best months to visit Rome and attracts crowds to the city as the summer heat tapers down.
Rome faces seasonal floods in low-lying parts of the city during early autumn as the rainfall registers 73.7mm (2.9"). October sees many sunny days but also has cloudy skies for long periods. The average humidity is 75%, and the nights are occasionally muggy in the presence of a thick cloud cover.

What is the temperature in September in Rome?

The average high-temperature, in September, is 26.5°C (79.7°F), while the average low-temperature is 15.2°C (59.4°F).

How much does it rain in Rome in September?

In September, in Rome, Italy, the rain falls for 6.2 days. Throughout September, 73.3mm (2.9") of precipitation is accumulated.

How many hours of daylight does Rome have in September?

In Rome, the average length of the day in September is 12.5h.

How many hours of sunshine does Rome have in September?

In September, the average sunshine is 7.9h.

What is the UV index intensity in September in Rome?

In Rome, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Rome, Italy
  • Average high temperature in September: 26.5°C

The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (11.9°C).

  • Average low temperature in September: 15.2°C

The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).

Average rainfall in September - Rome, Italy
  • Average rainfall in September: 73.3mm

The wettest month (with the highest rainfall) is November (115.4mm).
The driest month (with the lowest rainfall) is July (19.2mm).

Average rainfall days in September - Rome, Italy
  • Average rainfall days in September: 6.2 days

The month with the highest number of rainy days is November (9.7 days).
The month with the lowest number of rainy days is July (2.1 days).

Average daylight in September / Average sunshine in September - Rome, Italy
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 7.9h

The month with most sunshine is July (Average sunshine: 10.7h).
The month with least sunshine is December (Average sunshine: 3.6h).

Average UV index in September - Rome, Italy
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 1).