Rome weather in September
September in Rome: warm, rainy — an excellent time to visit.
#6 of 12 months in Rome · #313 of 604 destinations to visit in September · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Rome climate normals — September
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 87 mm / 3.4 in | 🌧 rainy |
| Rainy days | 8 days | |
| Humidity | 69% | 💧 humid |
| Dew point | 16°C / 61°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 12.5 h | |
| Wind | 14 km/h / 8 mph | |
| Air quality (US AQI) | 51 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Rome in September — FAQ
- Is September a good time to visit Rome?
- September in Rome: warm, rainy — an excellent time to visit. It ranks #6 of 12 months for Rome on SeasonMap's comfort score (80/100).
- What is the weather like in Rome in September?
- In September, Rome averages a daily high of 27°C and a low of 18°C, with about 87.1 mm of rain over roughly 8.4 rainy days.
- What is the air quality in Rome in September?
- Rome has a mean US Air Quality Index of about 51 in September.