September Weather in Mortagua, Portugal

Last updated: August 27, 2025

In Mortagua, Portugal, the weather in September is quite pleasant, with an average temperature of 20°C (68°F). However, temperatures can range from a cool 8°C (47°F) to a warm 35°C (96°F). Be prepared for a sprinkle of rain as well, with a precipitation total of 42 mm (1.7 in) spread over 5 days. You can expect a comfortable average humidity of 71%, making it a perfect time for outdoor activities!

September Temperature in Mortagua

In September in Mortagua, the average temperature is 20°C (68°F). The maximum can reach 35°C (96°F), while the minimum can be as low as 8°C (47°F). This variety in temperatures makes it essential to pack layers for your trip to Mortagua in September.

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

The chart illustrates September temperature patterns in Mortagua, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mortagua, September typically has an average temperature of 20°C (68°F), with highs reaching up to 35°C (96°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Mortagua

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

September Precipitation Trends in Mortagua

The chart displays monthly precipitation patterns in Mortagua, 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 Mortagua, 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 Mortagua

In Mortagua 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 Mortagua

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

In Mortagua 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 Mortagua.

Maximum UV Index Levels in Mortagua for September

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

Data source: Mortagua 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 Mortagua Compares to Other Months

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

This table compares monthly weather conditions in Mortagua, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	92 mm (3.6 inches)	87%	moderate
February Weather	10°C (51°F)	135 mm (5.3 inches)	81%	moderate
March Weather	11°C (53°F)	155 mm (6.1 inches)	78%	high
April Weather	13°C (56°F)	149 mm (5.9 inches)	79%	very high
May Weather	17°C (62°F)	68 mm (2.7 inches)	78%	very high
June Weather	18°C (65°F)	38 mm (1.5 inches)	71%	extreme
July Weather	21°C (70°F)	12 mm (0.5 inches)	63%	very high
August Weather	21°C (71°F)	15 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)	111 mm (4.4 inches)	79%	high
November Weather	11°C (53°F)	167 mm (6.6 inches)	86%	moderate
December Weather	10°C (50°F)	168 mm (6.6 inches)	87%	low