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September Weather in Aci Castello, Italy

Last updated: August 23, 2025

In September, the average temperature in Aci Castello, Italy hovers around 25°C (77°F). You'll experience gentle highs of up to 31°C (87°F) and comfortable lows of 19°C (67°F). Be prepared for some light rain, as 35 mm (1.4 in) is expected over about 7 days, while the average humidity sits at a pleasant 73%.

September Temperature in Aci Castello

In September in Aci Castello, the average temperature is 25°C (77°F). The maximum can reach 31°C (87°F) and the minimum can be as low as 19°C (67°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Aci Castello.

September Weather in Aci Castello: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Aci Castello, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aci Castello, September typically has an average temperature of 25°C (77°F), with highs reaching up to 31°C (87°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec545556606674798177696457
Data source: Temperature data for Aci Castello 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 Aci Castello

In Aci Castello in September, the precipitation amount is 35 mm (1.4 in) over the course of 7 days.

September Precipitation Trends in Aci Castello

The chart displays monthly precipitation patterns in Aci Castello, 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 Aci Castello, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec466061261218863514613135
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Aci Castello

In Aci Castello in September humidity is 73%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel a bit sticky but also vibrant and lively, as the air carries the rich scents of the surrounding environment.

September Average Humidity in Aci Castello

This chart illustrates the average monthly humidity levels in Aci Castello, 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 Aci Castello is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%71%76%77%76%72%70%73%73%75%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Aci Castello

In Aci Castello 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 Aci Castello.

Maximum UV Index Levels in Aci Castello for September

The chart shows the monthly maximum UV Index (UVI) for Aci Castello 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 Aci Castello typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356891010108743
Data source: Aci Castello 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 Aci Castello Compares to Other Months

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

This table compares monthly weather conditions in Aci Castello, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)46 mm (1.8 inches)75%moderate
February Weather13°C (56°F)60 mm (2.4 inches)71%moderate
March Weather13°C (56°F)61 mm (2.4 inches)71%high
April Weather15°C (60°F)26 mm (1.0 inches)76%very high
May Weather19°C (66°F)12 mm (0.5 inches)77%very high
June Weather23°C (74°F)18 mm (0.7 inches)76%very high
July Weather26°C (80°F)8 mm (0.3 inches)72%very high
August Weather27°C (81°F)6 mm (0.2 inches)70%very high
September Weather25°C (77°F)35 mm (1.4 inches)73%very high
October Weather21°C (70°F)146 mm (5.8 inches)73%high
November Weather18°C (64°F)131 mm (5.1 inches)75%moderate
December Weather14°C (58°F)35 mm (1.4 inches)75%moderate

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