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September Weather in San Paolo, Italy

Last updated: August 23, 2025

In San Paolo, Italy, the average temperature in September hovers around 22°C (72°F). Expect a pleasant range, with minimums dipping to 12°C (54°F) and maximums soaring up to 34°C (94°F). Be prepared for some rain, as the area receives approximately 51 mm (2.0 in) of precipitation over 9 days, while the average humidity sits comfortably at 66%.

September Temperature in San Paolo

In September, in San Paolo, the average temperature is 22°C (72°F). The maximum can reach 34°C (94°F), while the minimum can drop to as low as 12°C (54°F). This mild climate makes San Paolo an ideal destination for travelers seeking pleasant weather and outdoor adventures.

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

The chart illustrates September temperature patterns in San Paolo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Paolo, September typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec464951576574798072635750
Data source: Temperature data for San Paolo 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 Paolo

In San Paolo in September, the total precipitation amount is 51 mm (2.0 in) spread over 9 days.

September Precipitation Trends in San Paolo

The chart displays monthly precipitation patterns in San Paolo, 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 Paolo, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5457575664382031516210558
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Paolo

In San Paolo in September, humidity is 66%. With an average temperature of 22°C (72°F), this humidity feels like walking through a warm, enveloping blanket, making it essential to stay hydrated while exploring the sights and taking regular breaks in shaded areas.

September Average Humidity in San Paolo

This chart illustrates the average monthly humidity levels in San Paolo, 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 Paolo is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%74%70%71%71%65%61%56%66%74%80%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Paolo

In San Paolo in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in San Paolo.

Maximum UV Index Levels in San Paolo for September

The chart shows the monthly maximum UV Index (UVI) for San Paolo 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 Paolo typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3457991097632
Data source: San Paolo 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 Paolo Compares to Other Months

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

This table compares monthly weather conditions in San Paolo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)54 mm (2.1 inches)82%moderate
February Weather9°C (49°F)57 mm (2.2 inches)74%moderate
March Weather11°C (51°F)57 mm (2.2 inches)70%moderate
April Weather14°C (57°F)56 mm (2.2 inches)71%high
May Weather18°C (65°F)64 mm (2.5 inches)71%very high
June Weather23°C (74°F)38 mm (1.5 inches)65%very high
July Weather26°C (79°F)20 mm (0.8 inches)61%very high
August Weather26°C (80°F)31 mm (1.2 inches)56%very high
September Weather22°C (72°F)51 mm (2.0 inches)66%high
October Weather17°C (63°F)62 mm (2.4 inches)74%high
November Weather14°C (57°F)105 mm (4.1 inches)80%moderate
December Weather10°C (50°F)58 mm (2.3 inches)82%low

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