September Weather in Aljustrel, Portugal

Last updated: August 27, 2025

In September, the average temperature in Aljustrel, Portugal is a pleasant 23°C (73°F). Expect the mercury to drop as low as 10°C (50°F) during cooler nights, while the sun can blaze up to a sizzling 39°C (102°F) on the hottest days. This time of year also brings about 14 mm (0.6 in) of precipitation spread over just 1 day, contributing to an average humidity level of 71%.

September Temperature in Aljustrel

In September in Aljustrel, the average temperature is 23°C (73°F). Maximum temperatures can reach 39°C (102°F), while minimums can drop to 10°C (50°F). This makes Aljustrel an ideal destination for travelers seeking warm, but variable weather; be sure to pack for both the heat and cooler evenings.

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

The chart illustrates September temperature patterns in Aljustrel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aljustrel, September typically has an average temperature of 23°C (73°F), with highs reaching up to 39°C (102°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Aljustrel

In Aljustrel in September, the precipitation amount is 14 mm (0.6 in) over the course of 1 day.

September Precipitation Trends in Aljustrel

The chart displays monthly precipitation patterns in Aljustrel, 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 Aljustrel, September typically receives around 14 mm (0.6 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 Aljustrel

In Aljustrel in September humidity is 71%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor exploration slightly uncomfortable but still manageable if you stay hydrated and plan for breaks in shaded areas.

September Average Humidity in Aljustrel

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

In Aljustrel 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 Aljustrel.

Maximum UV Index Levels in Aljustrel for September

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

Data source: Aljustrel 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 Aljustrel Compares to Other Months

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

This table compares monthly weather conditions in Aljustrel, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	24 mm (1.0 inches)	80%	moderate
February Weather	12°C (54°F)	45 mm (1.8 inches)	73%	moderate
March Weather	13°C (56°F)	77 mm (3.0 inches)	71%	high
April Weather	15°C (60°F)	65 mm (2.6 inches)	69%	very high
May Weather	19°C (67°F)	31 mm (1.2 inches)	69%	very high
June Weather	21°C (70°F)	10 mm (0.4 inches)	67%	extreme
July Weather	23°C (74°F)	3 mm (0.1 inches)	69%	extreme
August Weather	24°C (76°F)	2 mm (0.1 inches)	68%	very high
September Weather	23°C (73°F)	14 mm (0.6 inches)	71%	very high
October Weather	19°C (67°F)	43 mm (1.7 inches)	75%	high
November Weather	14°C (57°F)	52 mm (2.1 inches)	78%	moderate
December Weather	11°C (53°F)	40 mm (1.6 inches)	81%	moderate