September Weather in Portelandia, Brazil

Last updated: August 22, 2025

In Portelandia, Brazil, the average temperature in September reaches a warm 27°C (80°F), with a range that can dip to a cool 12°C (54°F) or soar to a sizzling 38°C (101°F). Be prepared for some light rain, as the area experiences 19 mm (0.7 in) of precipitation over about 3 days. Humidity levels are relatively low, averaging just 25%, making for a pleasant atmosphere overall.

September Temperature in Portelandia

In September in Portelandia, the average temperature is 27°C (80°F). Maximums can reach 38°C (101°F) and minimums can be as low as 12°C (54°F). It's a great time for travelers seeking warm weather, but be prepared for both hot days and cooler nights.

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

The chart illustrates September temperature patterns in Portelandia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portelandia, September typically has an average temperature of 27°C (80°F), with highs reaching up to 38°C (101°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Portelandia

In Portelandia in September, the precipitation amount is 19 mm (0.7 in) over a period of 3 days.

September Precipitation Trends in Portelandia

The chart displays monthly precipitation patterns in Portelandia, 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 Portelandia, September typically receives around 19 mm (0.7 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 Portelandia

In Portelandia in September humidity is 25%. With an average temperature of 27°C (80°F), this humidity feels like a refreshing breeze, making it pleasant for traveling and exploring the local sights without the discomfort of heavy heat.

September Average Humidity in Portelandia

This chart illustrates the average monthly humidity levels in Portelandia, 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 Portelandia is approximately 25%, 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 Portelandia

In Portelandia in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Portelandia.

Maximum UV Index Levels in Portelandia for September

The chart shows the monthly maximum UV Index (UVI) for Portelandia 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 Portelandia typically reaches 12, which falls under the extreme exposure category.

Data source: Portelandia 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 Portelandia Compares to Other Months

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

This table compares monthly weather conditions in Portelandia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	186 mm (7.3 inches)	87%	extreme
February Weather	24°C (75°F)	211 mm (8.3 inches)	88%	extreme
March Weather	24°C (76°F)	172 mm (6.8 inches)	88%	extreme
April Weather	24°C (75°F)	75 mm (3.0 inches)	82%	extreme
May Weather	22°C (72°F)	22 mm (0.8 inches)	64%	very high
June Weather	22°C (71°F)	2 mm (0.1 inches)	45%	very high
July Weather	21°C (70°F)	0 mm (0.0 inches)	37%	very high
August Weather	24°C (75°F)	4 mm (0.1 inches)	31%	extreme
September Weather	27°C (80°F)	19 mm (0.7 inches)	25%	extreme
October Weather	26°C (79°F)	109 mm (4.3 inches)	22%	extreme
November Weather	24°C (76°F)	220 mm (8.7 inches)	58%	extreme
December Weather	24°C (76°F)	189 mm (7.4 inches)	82%	extreme