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Weather Comparison

Milan vs Lyon

Side-by-side weather comparison for September

Milan: 23°CLyon: 22°C340 km apart

September Weather: Milan vs Lyon

MetricMilanLyonBetter
Average HighHigher is warmer23°C (73°F)22°C (72°F)Milan
Average LowHigher is milder14°C (57°F)13°C (55°F)Milan
Rain DaysFewer is drier10 days9 daysLyon
PrecipitationLess is drier119 mm92 mmLyon
Sunshine HoursMore is sunnier10h/day9h/dayMilan
HumidityLower is more comfortable65%65%Tie
UV IndexLower is safer66Tie
Wind SpeedCalmer is better10 km/h14 km/hMilan

Which City is Better in September?

Milan and Lyon are closely matched in September. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Milan sits in the comfortable travel range at 23°C. Lyon is also comfortable at 22°C.

For travelers who prioritize dry weather, Lyon is the stronger choice in September. Milan receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Temperature Comparison in September

Milan reaches an average high of 23°C (73°F) and drops to 14°C (57°F) at night during September. The daily temperature range is 9°C, meaning moderate variation throughout the day.

Lyon averages 22°C (72°F) for the high and 13°C (55°F) for the low, with a daily range of 9°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Rainfall Comparison in September

Milan receives approximately 119 mm of rainfall across 10 rain days during September. You can expect rain roughly every other day.

Lyon sees 92 mm over 9 rain days. That makes Lyon the drier option by 1 rain day and 27 mm of total precipitation.

Both cities share similar humidity levels at 65%.

What to Pack: Milan vs Lyon

Packing for Milan in September

Highs of 23°C, lows of 14°C, 10 rain days

  • light layers
  • a light jacket for evenings
  • sunscreen
  • waterproof jacket
  • compact umbrella
  • waterproof shoes

Packing for Lyon in September

Highs of 22°C, lows of 13°C, 9 rain days

  • light layers
  • a light jacket for evenings
  • sunscreen
  • a packable rain jacket
  • an umbrella

Pack for both: light layers, a light jacket for evenings, sunscreen. These items are useful in either destination during September.

Year-Round Comparison: Milan vs Lyon

The table below shows average high temperatures and rain days for every month of the year, helping you find the best time to visit either city.September is highlighted for quick reference.

MonthMilanLyon
HighRainHighRain
Jan7°C7d7°C13d
Feb9°C7d9°C10d
Mar14°C8d13°C11d
Apr17°C11d16°C12d
May22°C12d20°C13d
Jun26°C10d24°C12d
Jul29°C9d27°C10d
Aug28°C11d27°C9d
Sep23°C10d22°C9d
Oct17°C10d17°C11d
Nov11°C11d11°C12d
Dec7°C8d7°C12d
23°

Milan Weather in September

Full forecast, packing tips, and activities

22°

Lyon Weather in September

Full forecast, packing tips, and activities

Frequently Asked Questions

Is Milan warmer than Lyon in September?
Yes. In September, Milan is warmer with an average high of 23°C (73°F) compared to Lyon at 22°C (72°F), a difference of 1°C.
Which city gets more rain in September, Milan or Lyon?
Milan gets more rain in September with 10 rain days and 119 mm of precipitation. Lyon is the drier option with 9 rain days.
Is it better to visit Milan or Lyon in September?
It depends on your preferences. Milan averages 23°C and 10 hours of daily sunshine with 10 rain days. Lyon averages 22°C with 9 sunshine hours and 9 rain days. If you prefer warmer weather, choose Milan. For fewer rain days, Lyon is the better pick.
How far apart are Milan and Lyon?
Milan and Lyon are approximately 340 km (211 miles) apart. Milan is located in Italy (Europe) while Lyon is in France (Europe).
What is the best month to visit Milan and Lyon?
For Milan, July tends to be the best month with 14 hours of daily sunshine and a high of 29°C. For Lyon, July is typically ideal with 13 sunshine hours and 27°C highs.

Compare Milan and Lyon in Other Months

Climate data sourced from the Open-Meteo Historical Weather API, using ERA5 reanalysis data covering 30-year normals from 1991 to 2020. All temperatures shown in Celsius with Fahrenheit equivalents. Rain days count days with 1 mm or more of precipitation. Sunshine hours represent average daily values. This comparison is generated from long-term climate averages and individual trips may vary.

Milan coordinates: 45.47°N, 9.19°E | Lyon coordinates: 45.76°N, 4.84°E