September Weather in Serra de El-Rei, Portugal

Last updated: August 27, 2025

In September, the average temperature in Serra de El-Rei, Portugal is a comfortable 19°C (67°F). You'll experience a minimum of 13°C (56°F) and can bask in highs of 31°C (88°F). Expect about 27 mm (1.1 in) of precipitation spread over 3 days, accompanied by an average humidity of 67%, making for a pleasantly refreshing atmosphere.

September Temperature in Serra de El-Rei

In September in Serra de El-Rei, the average temperature is 19°C (67°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 13°C (56°F). Overall, it's a great time for traveling, allowing you to enjoy pleasant weather and a variety of outdoor activities.

September Weather in Serra de El-Rei: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Serra de El-Rei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serra de El-Rei, September typically has an average temperature of 19°C (67°F), with highs reaching up to 31°C (88°F) and lows dropping to around 13°C (56°F).

Data source: Temperature data for Serra de El-Rei generated using information from the Copernicus Climate Change Service.

September Precipitation in Serra de El-Rei

In Serra de El-Rei in September, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

September Precipitation Trends in Serra de El-Rei

The chart displays monthly precipitation patterns in Serra de El-Rei, 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 Serra de El-Rei, September typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 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 Serra de El-Rei

In Serra de El-Rei in September, humidity is 67%. With an average temperature of 19°C (67°F), this humidity feels like walking through a warm, soft blanket, making sightseeing and outdoor activities a bit more challenging but still enjoyable for those prepared with light clothing and plenty of hydration.

September Average Humidity in Serra de El-Rei

This chart illustrates the average monthly humidity levels in Serra de El-Rei, 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 Serra de El-Rei 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 Serra de El-Rei

In Serra de El-Rei 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 Serra de El-Rei.

Maximum UV Index Levels in Serra de El-Rei for September

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

Data source: Serra de El-Rei 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 Serra de El-Rei Compares to Other Months

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

This table compares monthly weather conditions in Serra de El-Rei, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	45 mm (1.8 inches)	85%	moderate
February Weather	13°C (55°F)	54 mm (2.1 inches)	75%	moderate
March Weather	13°C (56°F)	69 mm (2.7 inches)	72%	high
April Weather	14°C (58°F)	79 mm (3.1 inches)	70%	very high
May Weather	17°C (63°F)	39 mm (1.5 inches)	70%	very high
June Weather	18°C (65°F)	17 mm (0.7 inches)	63%	extreme
July Weather	19°C (67°F)	8 mm (0.3 inches)	60%	very high
August Weather	20°C (68°F)	6 mm (0.2 inches)	60%	very high
September Weather	19°C (67°F)	27 mm (1.1 inches)	67%	very high
October Weather	18°C (64°F)	63 mm (2.5 inches)	74%	high
November Weather	14°C (58°F)	90 mm (3.6 inches)	83%	moderate
December Weather	13°C (55°F)	71 mm (2.8 inches)	85%	moderate