What September feels like in Rome
Early autumn arrives in Rome with September. Afternoons are warm and pleasant, good for long days out. After sunset it cools off noticeably — nights stay mild. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Rome in September
Expect a mix of dry and wet days, with rain about one day in 4. Rain tends to come in heavy bursts: about 10.4 mm (0.4 in) on an average rainy day. That is heavier than Rome's usual 8.2 mm per rainy day across the year.
Daylight and sunshine in September
Mid-month, Rome gets 12 h 33 min of daylight, from sunrise near 6:49 am to sunset near 7:22 pm. Days are getting shorter: 1 h 22 min less daylight than in mid-August. Measured sunshine covers about 87% of the daylight — skies are mostly clear.
How September compares to the rest of the year
In Rome's temperature order, September sits as the 4th warmest month. Against August, the average high is 5.1°C (9.2°F) lower, with 58 mm more rain. October is cooler again. By October, typical highs are 21.9°C (71.4°F).
Who September suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
Tips for visiting Rome in September
Versatile Layers
Mornings and evenings are cooler than midday, so dress in layers.
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Sunglasses
Frequent sunshine — sunglasses and a light hat.
Quick questions
How warm is Rome in September?
It feels warm: typical highs are 26.5°C (79.7°F), with lows near 17.1°C (62.8°F).
Does it rain a lot in Rome in September?
Quite a lot — 83 mm spread over about 8 days.
What should I wear in Rome in September?
Based on the averages: versatile layers, rain protection and sunglasses. Bring something extra for the cooler evenings.
Is September or October better for visiting Rome?
September, clearly: it ranks #3 of 12 among Rome's months, against #6 for the other. October is cooler and has more rainy days.