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September Weather in Costacciaro, Italy

Last updated: August 23, 2025

In September, the average temperature in Costacciaro, Italy is a comfortable 18°C (65°F), with potential swings from a cool 5°C (42°F) to a warm 31°C (88°F). Expect approximately 79 mm (3.1 in) of precipitation over 10 days, resulting in an average humidity of 67%.

September Temperature in Costacciaro

In September in Costacciaro, the average temperature is 18°C (65°F). Maximums can reach 31°C (88°F), while minimums can drop as low as 5°C (42°F). It's an ideal time for travelers to enjoy a comfortable climate, perfect for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Costacciaro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costacciaro, September typically has an average temperature of 18°C (65°F), with highs reaching up to 31°C (88°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec384345515968737464564941
Data source: Temperature data for Costacciaro 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 Costacciaro

In Costacciaro in September, the precipitation amount is 79 mm (3.1 in) over a span of 10 days.

September Precipitation Trends in Costacciaro

The chart displays monthly precipitation patterns in Costacciaro, 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 Costacciaro, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec53727671974548487962102105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Costacciaro

In Costacciaro in September humidity is 67%. With an average temperature of 18°C (65°F), this humidity feels like a mild blanket wrapping around you, making outdoor activities feel pleasantly refreshing, yet you may find yourself reaching for a drink more often to stay hydrated while exploring the sights.

September Average Humidity in Costacciaro

This chart illustrates the average monthly humidity levels in Costacciaro, 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 Costacciaro is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%78%69%71%71%63%59%54%67%79%84%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Costacciaro

In Costacciaro 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 Costacciaro.

Maximum UV Index Levels in Costacciaro for September

The chart shows the monthly maximum UV Index (UVI) for Costacciaro 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 Costacciaro typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Costacciaro 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 Costacciaro Compares to Other Months

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

This table compares monthly weather conditions in Costacciaro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)53 mm (2.1 inches)85%low
February Weather6°C (43°F)72 mm (2.8 inches)78%moderate
March Weather7°C (45°F)76 mm (3.0 inches)69%high
April Weather11°C (51°F)71 mm (2.8 inches)71%high
May Weather15°C (59°F)97 mm (3.8 inches)71%very high
June Weather20°C (69°F)45 mm (1.8 inches)63%very high
July Weather23°C (73°F)48 mm (1.9 inches)59%very high
August Weather23°C (74°F)48 mm (1.9 inches)54%very high
September Weather18°C (65°F)79 mm (3.1 inches)67%high
October Weather13°C (56°F)62 mm (2.4 inches)78%moderate
November Weather9°C (49°F)102 mm (4.0 inches)84%moderate
December Weather5°C (42°F)105 mm (4.1 inches)86%low

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