September Weather in Portel, Brazil

Last updated: August 22, 2025

In September, the average temperature in Portel, Brazil is a warm 28°C (83°F), with minimums dipping to 23°C (73°F) and highs reaching up to 35°C (96°F). Expect some rain, with an average precipitation of 31 mm (1.2 in) spread over 7 days. Humidity levels are comfortably low, averaging around 47%.

September Temperature in Portel

In September in Portel, the average temperature is 28°C (83°F), with a maximum of 35°C (96°F) and a minimum as low as 23°C (73°F), making it a perfect time for beach activities and outdoor exploration.

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

The chart illustrates September temperature patterns in Portel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portel, September typically has an average temperature of 28°C (83°F), with highs reaching up to 35°C (96°F) and lows dropping to around 23°C (73°F).

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

September Precipitation in Portel

In Portel in September, the precipitation amount is 31 mm (1.2 in) over the course of 7 days.

September Precipitation Trends in Portel

The chart displays monthly precipitation patterns in Portel, 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 Portel, September typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 7 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 Portel

In Portel in September humidity is 47%. With an average temperature of 28°C (83°F), this humidity feels like a warm, comfortable embrace, making it ideal for exploring the sights while staying refreshed in the pleasant climate.

September Average Humidity in Portel

This chart illustrates the average monthly humidity levels in Portel, 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 Portel is approximately 47%, 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 Portel

In Portel in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Portel.

Maximum UV Index Levels in Portel for September

The chart shows the monthly maximum UV Index (UVI) for Portel 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 Portel typically reaches 13, which falls under the extreme exposure category.

Data source: Portel 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 Portel Compares to Other Months

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

This table compares monthly weather conditions in Portel, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	231 mm (9.1 inches)	85%	extreme
February Weather	26°C (80°F)	343 mm (13.5 inches)	69%	extreme
March Weather	26°C (79°F)	413 mm (16.3 inches)	70%	extreme
April Weather	26°C (80°F)	408 mm (16.1 inches)	85%	extreme
May Weather	27°C (81°F)	254 mm (10.0 inches)	90%	extreme
June Weather	27°C (81°F)	151 mm (6.0 inches)	82%	extreme
July Weather	27°C (81°F)	90 mm (3.5 inches)	66%	extreme
August Weather	28°C (83°F)	52 mm (2.0 inches)	51%	extreme
September Weather	28°C (83°F)	31 mm (1.2 inches)	47%	extreme
October Weather	29°C (84°F)	29 mm (1.2 inches)	46%	extreme
November Weather	28°C (83°F)	106 mm (4.2 inches)	46%	extreme
December Weather	27°C (82°F)	159 mm (6.3 inches)	70%	extreme