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September Weather in Porossan, Italy

Last updated: August 23, 2025

In Porossan, Italy, the average temperature in September hovers around 8°C (47°F). Be prepared for a chill, as the minimum can dip to -7°C (20°F), while warmer days may reach up to 20°C (68°F). Expect about 64 mm (2.5 in) of precipitation spread across 14 days, contributing to an average humidity level of 73%.

September Temperature in Porossan

In September in Porossan, the average temperature is 8°C (47°F). Maximums can reach 20°C (68°F) and minimums can be as low as -7°C (20°F). Be sure to pack layers to comfortably enjoy your travels in this varied climate.

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

The chart illustrates September temperature patterns in Porossan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porossan, September typically has an average temperature of 8°C (47°F), with highs reaching up to 20°C (68°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec152125324050545447382618
Data source: Temperature data for Porossan 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 Porossan

In Porossan in September, the precipitation amount is 64 mm (2.5 in) spread out over 14 days.

September Precipitation Trends in Porossan

The chart displays monthly precipitation patterns in Porossan, 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 Porossan, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec11479106831441049810165124117165
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porossan

In Porossan in September humidity is 73%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that can make outdoor activities less enjoyable, wrapping you in a thick, misty embrace that weighs heavily on your clothes and skin, making travel seem a bit more cumbersome and less invigorating.

September Average Humidity in Porossan

This chart illustrates the average monthly humidity levels in Porossan, 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 Porossan is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%84%83%78%75%72%63%73%89%91%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Porossan

In Porossan in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Porossan.

Maximum UV Index Levels in Porossan for September

The chart shows the monthly maximum UV Index (UVI) for Porossan 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 Porossan typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111108632
Data source: Porossan 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 Porossan Compares to Other Months

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

This table compares monthly weather conditions in Porossan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)114 mm (4.5 inches)91%moderate
February Weather-6°C (22°F)79 mm (3.1 inches)87%moderate
March Weather-4°C (25°F)106 mm (4.2 inches)84%very high
April Weather0°C (32°F)83 mm (3.3 inches)83%very high
May Weather4°C (40°F)144 mm (5.7 inches)78%very high
June Weather10°C (50°F)104 mm (4.1 inches)75%extreme
July Weather12°C (55°F)98 mm (3.9 inches)72%extreme
August Weather12°C (54°F)101 mm (4.0 inches)63%very high
September Weather8°C (47°F)64 mm (2.5 inches)73%very high
October Weather4°C (39°F)124 mm (4.9 inches)89%high
November Weather-3°C (27°F)117 mm (4.6 inches)90%moderate
December Weather-8°C (18°F)165 mm (6.5 inches)90%low

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