Milan Weather in September
Italy · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Milan sees average temperatures ranging from a low of 15.9°C (60.6°F) to a high of 24.7°C (76.5°F), with a mean of 20.0°C (68.0°F). Compared to the annual average of 14.2°C (57.6°F), this month is 5.8°C warmer than the yearly norm. Precipitation averages 138.3mm, making it approximately 36.0mm wetter than the monthly average of 102.0mm. The city receives an average of 9.9 hours of sunshine per day during September, with relative humidity averaging 71.8%. Wind speeds reach an average maximum of 13.0 km/h. For travelers, this month offers a temperature experience in Milan, with wetter-than-average conditions compared to the rest of the year.
Milan's humid subtropical climate creates hot, humid summers and cold, damp winters. I've tracked the data and found that the city's position in the Po Valley creates foggy conditions in winter. The best time for visiting is April to June and September to October, when temperatures are comfortable and the city's fashion and cultural scene is at its peak.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 24.9°C (76.8°F) | 20.0°C (68.0°F) | 14.9°C (58.8°F) |
| Rainfall | 115.3mm | 138.3mm | 161.5mm |
| Sunshine | 12.0 hrs | 9.9 hrs | 7.1 hrs |
| Humidity | 64.9% | 71.8% | 82.7% |
| Wind | 13.9 km/h | 13.0 km/h | 12.5 km/h |
| Rainy Days | 14.2 | 13.8 | 14.6 |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Milan in September, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Milan in September?
The average temperature in Milan during September ranges from 15.9°C (60.6°F) to 24.7°C (76.5°F), with a mean of 20.0°C (68.0°F).
How much does it rain in Milan in September?
Milan receives an average of 138.3mm of precipitation in September, spread across approximately 13.8 rainy days.
What should I pack for Milan in September?
Based on September weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 138.3mm of precipitation.
Is September a good time to visit Milan?
September is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Milan
Cities with Similar September Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 45.46°, 9.19°. Timezone: Europe/Rome. Last updated: 2026-07-30.