September Weather in Castiglione, Italy

Last updated: August 23, 2025

In September, the average temperature in Castiglione, Italy hovers around 21°C (69°F), with a minimum of 13°C (55°F) and rising to a maximum of 28°C (83°F). Expect 103 mm (4.1 in) of rainfall spread over 10 days, accompanied by a notable average humidity of 74%. Perfect for those who enjoy a mix of warm weather and occasional showers!

September Temperature in Castiglione

In September in Castiglione, the average temperature is 21°C (69°F). The maximum can reach 28°C (83°F), while the minimum can be as low as 13°C (55°F). This makes it an ideal time for travelers seeking pleasant and mild weather.

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

The chart illustrates September temperature patterns in Castiglione, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castiglione, September typically has an average temperature of 21°C (69°F), with highs reaching up to 28°C (83°F) and lows dropping to around 13°C (55°F).

Data source: Temperature data for Castiglione generated using information from the Copernicus Climate Change Service.

September Precipitation in Castiglione

In Castiglione in September, the precipitation amount is 103 mm (4.1 in) over a span of 10 days.

September Precipitation Trends in Castiglione

The chart displays monthly precipitation patterns in Castiglione, 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 Castiglione, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Castiglione

In Castiglione in September, humidity is 74%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that clings to your skin, making every excursion feel slightly more intense and requiring a bit more effort with every step.

September Average Humidity in Castiglione

This chart illustrates the average monthly humidity levels in Castiglione, 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 Castiglione is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Castiglione

In Castiglione 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 Castiglione.

Maximum UV Index Levels in Castiglione for September

The chart shows the monthly maximum UV Index (UVI) for Castiglione 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 Castiglione typically reaches 7, which falls under the high exposure category.

Data source: Castiglione 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 Castiglione Compares to Other Months

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

This table compares monthly weather conditions in Castiglione, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	89 mm (3.5 inches)	88%	low
February Weather	9°C (49°F)	137 mm (5.4 inches)	81%	moderate
March Weather	10°C (51°F)	126 mm (5.0 inches)	76%	high
April Weather	13°C (55°F)	105 mm (4.1 inches)	77%	high
May Weather	16°C (61°F)	123 mm (4.8 inches)	74%	very high
June Weather	21°C (69°F)	47 mm (1.9 inches)	71%	very high
July Weather	23°C (74°F)	33 mm (1.3 inches)	67%	very high
August Weather	24°C (75°F)	45 mm (1.8 inches)	64%	very high
September Weather	21°C (69°F)	103 mm (4.1 inches)	74%	high
October Weather	17°C (62°F)	208 mm (8.2 inches)	87%	moderate
November Weather	13°C (55°F)	213 mm (8.4 inches)	88%	moderate
December Weather	10°C (50°F)	210 mm (8.2 inches)	85%	low