September Weather in Alvito, Portugal

Last updated: August 27, 2025

In September, the average temperature in Alvito, Portugal is a pleasant 23°C (74°F). However, be prepared for temperature swings, with minimums reaching 10°C (51°F) and maximums soaring to 38°C (101°F). Expect a modest precipitation amount of 19 mm (0.8 in) over the course of just 1 day, and enjoy a comfortable average humidity of 67%.

September Temperature in Alvito

In September in Alvito, the average temperature is a pleasant 23°C (74°F). The maximum can reach a sweltering 38°C (101°F), while the minimum can dip to a cool 10°C (51°F). This diverse range of temperatures makes it essential for travelers to pack both light clothing for the daytime heat and layers for the cooler evenings.

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

The chart illustrates September temperature patterns in Alvito, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alvito, September typically has an average temperature of 23°C (74°F), with highs reaching up to 38°C (101°F) and lows dropping to around 10°C (51°F).

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

September Precipitation in Alvito

In Alvito in September, the precipitation amount is 19 mm (0.8 in) over the course of 1 day.

September Precipitation Trends in Alvito

The chart displays monthly precipitation patterns in Alvito, 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 Alvito, September typically receives around 19 mm (0.8 inches) of precipitation spread over approximately 1 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 Alvito

In Alvito in September humidity is 67%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making outdoor exploration pleasant yet slightly sticky, perfect for leisurely strolls but requiring occasional breaks for hydration.

September Average Humidity in Alvito

This chart illustrates the average monthly humidity levels in Alvito, 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 Alvito is approximately 67%, 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 Alvito

In Alvito in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Alvito.

Maximum UV Index Levels in Alvito for September

The chart shows the monthly maximum UV Index (UVI) for Alvito 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 Alvito typically reaches 9, which falls under the very high exposure category.

Data source: Alvito 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 Alvito Compares to Other Months

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

This table compares monthly weather conditions in Alvito, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (49°F)	29 mm (1.2 inches)	85%	moderate
February Weather	12°C (54°F)	47 mm (1.8 inches)	75%	moderate
March Weather	13°C (56°F)	84 mm (3.3 inches)	72%	high
April Weather	15°C (60°F)	65 mm (2.5 inches)	70%	very high
May Weather	19°C (67°F)	27 mm (1.1 inches)	70%	very high
June Weather	21°C (71°F)	11 mm (0.4 inches)	63%	extreme
July Weather	24°C (75°F)	2 mm (0.1 inches)	60%	very high
August Weather	25°C (77°F)	2 mm (0.1 inches)	60%	very high
September Weather	23°C (74°F)	19 mm (0.8 inches)	67%	very high
October Weather	19°C (67°F)	46 mm (1.8 inches)	74%	high
November Weather	14°C (57°F)	53 mm (2.1 inches)	83%	moderate
December Weather	11°C (53°F)	54 mm (2.1 inches)	85%	moderate