September Weather in Acquaviva, San Marino

Last updated: August 31, 2025

In Acquaviva, San Marino, the average temperature in September hovers around 21°C (69°F), making it a pleasant time to visit. Expect temperatures to range from a minimum of 10°C (50°F) to a maximum of 31°C (88°F). Be prepared for some rainfall, with an average precipitation amount of 93 mm (3.7 in) over 10 days, and enjoy the average humidity of 66% that adds to the season's charm.

September Temperature in Acquaviva

In September in Acquaviva, the average temperature is 21°C (69°F). Maximums can reach 31°C (88°F) and minimums can be as low as 10°C (50°F). It's a great time to visit for enjoyable weather and outdoor activities.

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

The chart illustrates September temperature patterns in Acquaviva, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acquaviva, September typically has an average temperature of 21°C (69°F), with highs reaching up to 31°C (88°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Acquaviva

In Acquaviva in September, the precipitation amount is 93 mm (3.7 in) over the course of 10 days.

September Precipitation Trends in Acquaviva

The chart displays monthly precipitation patterns in Acquaviva, 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 Acquaviva, September typically receives around 93 mm (3.7 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 Acquaviva

In Acquaviva in September humidity is 66%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making it a bit sticky, but still comfortable for traveling as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Acquaviva

This chart illustrates the average monthly humidity levels in Acquaviva, 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 Acquaviva is approximately 66%, 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 Acquaviva

In Acquaviva 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 Acquaviva.

Maximum UV Index Levels in Acquaviva for September

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

Data source: Acquaviva 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 Acquaviva Compares to Other Months

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

This table compares monthly weather conditions in Acquaviva, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	41 mm (1.6 inches)	84%	low
February Weather	8°C (46°F)	81 mm (3.2 inches)	76%	moderate
March Weather	9°C (49°F)	58 mm (2.3 inches)	68%	high
April Weather	13°C (56°F)	54 mm (2.1 inches)	70%	high
May Weather	17°C (64°F)	86 mm (3.4 inches)	69%	very high
June Weather	23°C (73°F)	39 mm (1.5 inches)	62%	very high
July Weather	25°C (77°F)	55 mm (2.2 inches)	57%	very high
August Weather	25°C (78°F)	49 mm (1.9 inches)	55%	very high
September Weather	21°C (69°F)	93 mm (3.7 inches)	66%	high
October Weather	16°C (61°F)	78 mm (3.1 inches)	79%	moderate
November Weather	12°C (53°F)	95 mm (3.7 inches)	84%	moderate
December Weather	7°C (46°F)	78 mm (3.1 inches)	83%	low