September Weather in Alcantarilha, Portugal

Last updated: August 27, 2025

In Alcantarilha, Portugal, the average temperature in September typically hovers around 23°C (74°F). While you can expect a minimum of 11°C (52°F), highs can reach up to 37°C (99°F). The month brings about 11 mm (0.4 in) of precipitation over just 1 day, and you’ll experience an average humidity of 71%, making for a warm and occasionally wet climate.

September Temperature in Alcantarilha

In September in Alcantarilha, the average temperature is 23°C (74°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 11°C (52°F). This range makes it an ideal time for travelers seeking warmth while also enjoying cooler evenings.

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

The chart illustrates September temperature patterns in Alcantarilha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alcantarilha, September typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Alcantarilha

In Alcantarilha in September, the precipitation amount is 11 mm (0.4 in) over the course of one day.

September Precipitation Trends in Alcantarilha

The chart displays monthly precipitation patterns in Alcantarilha, 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 Alcantarilha, September typically receives around 11 mm (0.4 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 Alcantarilha

In Alcantarilha in September, humidity is 71%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace that can make outdoor activities feel sticky, but if you're well-hydrated and take breaks in the shade, it offers a pleasant tropical ambiance perfect for exploration.

September Average Humidity in Alcantarilha

This chart illustrates the average monthly humidity levels in Alcantarilha, 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 Alcantarilha 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 Alcantarilha

In Alcantarilha 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 Alcantarilha.

Maximum UV Index Levels in Alcantarilha for September

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

Data source: Alcantarilha 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 Alcantarilha Compares to Other Months

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

This table compares monthly weather conditions in Alcantarilha, 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 (50°F)	23 mm (0.9 inches)	80%	moderate
February Weather	12°C (54°F)	46 mm (1.8 inches)	73%	moderate
March Weather	13°C (56°F)	80 mm (3.2 inches)	71%	high
April Weather	15°C (59°F)	70 mm (2.8 inches)	69%	very high
May Weather	19°C (67°F)	25 mm (1.0 inches)	69%	very high
June Weather	21°C (71°F)	8 mm (0.3 inches)	67%	extreme
July Weather	24°C (75°F)	3 mm (0.1 inches)	69%	very high
August Weather	25°C (77°F)	1 mm (0.0 inches)	68%	very high
September Weather	23°C (74°F)	11 mm (0.4 inches)	71%	very high
October Weather	19°C (67°F)	32 mm (1.3 inches)	75%	high
November Weather	14°C (58°F)	51 mm (2.0 inches)	78%	moderate
December Weather	12°C (54°F)	44 mm (1.7 inches)	81%	moderate