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September Weather in San Giuliano Vecchio, Italy

Last updated: August 23, 2025

In San Giuliano Vecchio, Italy, the average temperature in September is a pleasant 21°C (71°F). Expect temperatures to range from a cool 8°C (47°F) to a warm 33°C (92°F). During this time, precipitation averages 53 mm (2.1 in) spread over 8 days, and the average humidity hovers around 74%. Enjoy the vibrant climate this month!

September Temperature in San Giuliano Vecchio

In September in San Giuliano Vecchio, the average temperature is 21°C (71°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 8°C (47°F). This range makes it an ideal time for travelers looking to enjoy mild weather and various outdoor activities.

September Weather in San Giuliano Vecchio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Giuliano Vecchio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Giuliano Vecchio, September typically has an average temperature of 21°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec394550576575797970605040
Data source: Temperature data for San Giuliano Vecchio 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 San Giuliano Vecchio

In San Giuliano Vecchio in September, the total precipitation amount is 53 mm (2.1 in) over the course of 8 days.

September Precipitation Trends in San Giuliano Vecchio

The chart displays monthly precipitation patterns in San Giuliano Vecchio, 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 San Giuliano Vecchio, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec3647536287465031539314278
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Giuliano Vecchio

In San Giuliano Vecchio in September, humidity is 74%. With an average temperature of 21°C (71°F), this humidity feels like traveling through a warm, damp blanket, making outdoor excursions feel sticky and a bit stifling, often prompting the need for frequent breaks to stay refreshed.

September Average Humidity in San Giuliano Vecchio

This chart illustrates the average monthly humidity levels in San Giuliano Vecchio, 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 San Giuliano Vecchio is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%81%76%77%74%71%67%64%74%87%88%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Giuliano Vecchio

In San Giuliano Vecchio 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 San Giuliano Vecchio, you can refer to this Hourly UV Index in San Giuliano Vecchio.

Maximum UV Index Levels in San Giuliano Vecchio for September

The chart shows the monthly maximum UV Index (UVI) for San Giuliano Vecchio 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 San Giuliano Vecchio typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789986532
Data source: San Giuliano Vecchio 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 San Giuliano Vecchio Compares to Other Months

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

This table compares monthly weather conditions in San Giuliano Vecchio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)36 mm (1.4 inches)88%low
February Weather7°C (45°F)47 mm (1.9 inches)81%moderate
March Weather10°C (50°F)53 mm (2.1 inches)76%moderate
April Weather14°C (58°F)62 mm (2.4 inches)77%high
May Weather18°C (65°F)87 mm (3.4 inches)74%very high
June Weather24°C (76°F)46 mm (1.8 inches)71%very high
July Weather26°C (79°F)50 mm (2.0 inches)67%very high
August Weather26°C (80°F)31 mm (1.2 inches)64%very high
September Weather21°C (71°F)53 mm (2.1 inches)74%high
October Weather16°C (60°F)93 mm (3.7 inches)87%moderate
November Weather10°C (50°F)142 mm (5.6 inches)88%moderate
December Weather4°C (40°F)78 mm (3.1 inches)85%low

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