Milan weather in September
September in Milan: warm, rainy — one of the best months to visit.
#2 of 12 months in Milan · #138 of 604 destinations to visit in September · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Milan climate normals — September
| Daytime high | 24°C / 75°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 59°F | |
| Feels like (high) | 25°C / 77°F | |
| Rainfall | 117 mm / 4.6 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 14°C / 58°F | |
| Sunshine | 10 h/day | |
| Daylight | 12.5 h | |
| Wind | 10 km/h / 6 mph | |
| Air quality (US AQI) | 64 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Milan in September — FAQ
- Is September a good time to visit Milan?
- September in Milan: warm, rainy — one of the best months to visit. It ranks #2 of 12 months for Milan on SeasonMap's comfort score (87/100).
- What is the weather like in Milan in September?
- In September, Milan averages a daily high of 24°C and a low of 15.1°C, with about 116.7 mm of rain over roughly 10.4 rainy days.
- What is the air quality in Milan in September?
- Milan has a mean US Air Quality Index of about 64 in September.