September Weather in Avo, Portugal

Last updated: August 27, 2025

In September, the average temperature in Avo, Portugal hovers around 20°C (68°F), with temperatures ranging from a cool 7°C (45°F) to a warm 34°C (94°F). Expect about 42 mm (1.7 in) of precipitation spread over 5 days, contributing to an average humidity level of 71%.

September Temperature in Avo

In September in Avo, the average temperature is 20°C (68°F). Maximums can reach 34°C (94°F) and minimums can be as low as 7°C (45°F). This makes Avo an ideal destination for travelers seeking a pleasant climate with a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Avo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Avo, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (94°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Avo

In Avo in September, the precipitation amount is 42 mm (1.7 in) over a span of 5 days.

September Precipitation Trends in Avo

The chart displays monthly precipitation patterns in Avo, 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 Avo, September typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 5 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 Avo

In Avo in September, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.

September Average Humidity in Avo

This chart illustrates the average monthly humidity levels in Avo, 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 Avo is approximately 71%, 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 Avo

In Avo 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 Avo.

Maximum UV Index Levels in Avo for September

The chart shows the monthly maximum UV Index (UVI) for Avo 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 Avo typically reaches 8, which falls under the very high exposure category.

Data source: Avo 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 Avo Compares to Other Months

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

This table compares monthly weather conditions in Avo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	68 mm (2.7 inches)	87%	moderate
February Weather	10°C (50°F)	103 mm (4.1 inches)	81%	moderate
March Weather	11°C (52°F)	134 mm (5.3 inches)	78%	high
April Weather	13°C (55°F)	137 mm (5.4 inches)	79%	very high
May Weather	16°C (61°F)	62 mm (2.4 inches)	78%	very high
June Weather	18°C (65°F)	38 mm (1.5 inches)	71%	extreme
July Weather	21°C (70°F)	13 mm (0.5 inches)	63%	very high
August Weather	21°C (70°F)	14 mm (0.6 inches)	64%	very high
September Weather	20°C (68°F)	42 mm (1.7 inches)	71%	very high
October Weather	16°C (61°F)	96 mm (3.8 inches)	79%	high
November Weather	11°C (52°F)	143 mm (5.6 inches)	86%	moderate
December Weather	9°C (49°F)	137 mm (5.4 inches)	87%	moderate