September Weather in Princesa Isabel, Brazil

Last updated: August 22, 2025

In Princesa Isabel, Brazil, the average temperature in September is a pleasant 26°C (78°F), with a minimum dipping to 16°C (61°F) and a maximum reaching up to 36°C (97°F). You can expect very little precipitation—just 1 mm (0.0 in) over 0 days, while the average humidity hovers around 59%, creating a comfortable atmosphere perfect for outdoor activities.

September Temperature in Princesa Isabel

In September in Princesa Isabel, the average temperature is 26°C (78°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 16°C (61°F). This pleasant climate makes Princesa Isabel a great destination for travelers seeking warmth and outdoor adventures.

September Weather in Princesa Isabel: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Princesa Isabel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Princesa Isabel, September typically has an average temperature of 26°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 16°C (61°F).

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

September Precipitation in Princesa Isabel

In Princesa Isabel in September, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

September Precipitation Trends in Princesa Isabel

The chart displays monthly precipitation patterns in Princesa Isabel, 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 Princesa Isabel, September typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 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 Princesa Isabel

In Princesa Isabel in September humidity is 59%. With an average temperature of 26°C (78°F), this humidity feels like a warm embrace, making travel slightly uncomfortable, as sweat lingers on your skin while you explore the sights.

September Average Humidity in Princesa Isabel

This chart illustrates the average monthly humidity levels in Princesa Isabel, 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 Princesa Isabel is approximately 59%, 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 Princesa Isabel

In Princesa Isabel in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Princesa Isabel, you can check here.

Maximum UV Index Levels in Princesa Isabel for September

The chart shows the monthly maximum UV Index (UVI) for Princesa Isabel 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 Princesa Isabel typically reaches 14, which falls under the extreme exposure category.

Data source: Princesa Isabel 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 Princesa Isabel Compares to Other Months

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

This table compares monthly weather conditions in Princesa Isabel, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	48 mm (1.9 inches)	88%	extreme
February Weather	26°C (80°F)	151 mm (5.9 inches)	91%	extreme
March Weather	26°C (78°F)	163 mm (6.4 inches)	92%	extreme
April Weather	25°C (77°F)	101 mm (4.0 inches)	92%	extreme
May Weather	24°C (76°F)	57 mm (2.2 inches)	89%	extreme
June Weather	23°C (74°F)	14 mm (0.6 inches)	80%	extreme
July Weather	23°C (73°F)	18 mm (0.7 inches)	70%	extreme
August Weather	24°C (75°F)	3 mm (0.1 inches)	65%	extreme
September Weather	26°C (78°F)	1 mm (0.0 inches)	59%	extreme
October Weather	27°C (82°F)	2 mm (0.1 inches)	53%	extreme
November Weather	28°C (82°F)	17 mm (0.7 inches)	49%	extreme
December Weather	28°C (82°F)	22 mm (0.9 inches)	59%	extreme