September in Rome averages highs of 27 °C (81 °F) and lows of 17 °C (63 °F), with about 7 rainy days and 12 h 25 min of daylight.
September weather in Rome at a glance
average high to low each dot ≈ 3 rainy days
Is September a good time to visit Rome?
Good time to go: comfortably warm and some rain. September is usually high season in Rome: book rooms early, as prices are typically at their highest.
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Holidays and events in September 2026
No public holidays fall in September 2026 in Italy, so opening hours should be normal.
Things to do in Rome in September
September's weather suits a mix of outdoor sights and museums, so the open-air ones come first.
- Colosseum and Roman Forum — book the combined ticket outdoors
- Pantheon and Piazza Navona — walkable in one morning outdoors
- Trevi Fountain and the Spanish Steps — best before 8am outdoors
- Vatican Museums and Sistine Chapel — go early or late indoors
- St Peter's Basilica — climb the dome indoors
- Borghese Gallery and gardens — timed tickets, worth it indoors
Where to stay: Centro Storico near Piazza Navona; Trastevere for evenings; Monti for value close to the Colosseum.
What to pack for Rome in September
- Summer clothes, sunglasses and sunscreen.
- Comfortable walking shoes.
What a day in Rome costs
| Budget traveller | Mid-range | |
|---|---|---|
| Typical total per person, per day | €60–150 | €180–380 |
Excluding flights. September is usually high season in Rome: book rooms early, as prices are typically at their highest.
September in nearby cities
| City | High / low | Rainy days | Verdict |
|---|---|---|---|
| Naples | 26° / 18° | 8 | Good time to go |
| Florence | 26° / 15° | 8 | Good time to go |
| Venice | 24° / 17° | 8 | Good time to go |
Plan your Rome trip
- Romantic Weekend in Rome: 2-Day Plan for Couples (2026)
- Is Rome Expensive? Real Costs and a 2026 Budget Guide
- 3 Days in Rome — A First-Timer's Itinerary (Hour by Hour, With Costs)
Want the whole trip planned? Join the Journey waitlist: tell it where, when and your budget, and it plans every day hour by hour.
FAQ
Is September a good time to visit Rome?
By the numbers, September is a good time to go: comfortably warm and some rain, with average highs of 27 °C (81 °F) and about 7 rainy days. September is usually high season in Rome: book rooms early, as prices are typically at their highest. The best months for weather are April, May, June, September, October.
How warm is Rome in September?
Average highs are 27 °C (81 °F) and lows 17 °C (63 °F) (2015–2024 averages).
Does it rain a lot in Rome in September?
Expect about 7 days with 2 mm of rain or more, about 90 mm in total. It is the 4th driest month of the year in Rome.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights.