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September Weather in Bologne, France

Last updated: August 23, 2025

In September, the average temperature in Bologne, France hovers around 16°C (60°F). Expect a range, with minimums dipping to 4°C (39°F) and maximums soaring up to 32°C (89°F). Prepare for some precipitation, as the area receives about 65 mm (2.6 in) over 9 days. With an average humidity of 83%, the air is sure to feel quite tropical!

September Temperature in Bologne

In September in Bologne, the average temperature is 16°C (60°F), with maximums reaching up to 32°C (89°F) and minimums dropping as low as 4°C (39°F). This diverse temperature range makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

September Weather in Bologne: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Bologne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bologne, September typically has an average temperature of 16°C (60°F), with highs reaching up to 32°C (89°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec364144505665686760534340
Data source: Temperature data for Bologne generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Bologne

In Bologne in September, the precipitation amount is 65 mm (2.6 in) over the course of 9 days.

September Precipitation Trends in Bologne

The chart displays monthly precipitation patterns in Bologne, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Bologne, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec107931024292876552658287156
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bologne

In Bologne in September humidity is 83%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit uncomfortable for traveling.

September Average Humidity in Bologne

This chart illustrates the average monthly humidity levels in Bologne, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Bologne is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%84%81%82%82%80%83%89%91%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bologne

In Bologne in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Bologne, you can refer to this Hourly UV Index in Bologne.

Maximum UV Index Levels in Bologne for September

The chart shows the monthly maximum UV Index (UVI) for Bologne in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Bologne typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Bologne September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Bologne Compares to Other Months

Weather in Bologne varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bologne, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bologne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (37°F)107 mm (4.2 inches)91%low
February Weather5°C (41°F)93 mm (3.6 inches)90%moderate
March Weather7°C (45°F)102 mm (4.0 inches)88%moderate
April Weather10°C (51°F)42 mm (1.7 inches)84%high
May Weather14°C (57°F)92 mm (3.6 inches)81%very high
June Weather18°C (65°F)87 mm (3.4 inches)82%very high
July Weather20°C (68°F)65 mm (2.6 inches)82%very high
August Weather20°C (67°F)52 mm (2.1 inches)80%very high
September Weather16°C (60°F)65 mm (2.6 inches)83%high
October Weather11°C (53°F)82 mm (3.2 inches)89%moderate
November Weather6°C (43°F)87 mm (3.4 inches)91%low
December Weather4°C (40°F)156 mm (6.2 inches)93%low

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