September Weather in Belem de Sao Francisco, Brazil

Last updated: August 22, 2025

In September, the average temperature in Belem de Sao Francisco, Brazil is a delightful 26°C (80°F). However, temperatures can range from a cool 18°C (65°F) to a sizzling 38°C (100°F). Expect a bit of moisture, with an average precipitation of 6 mm (0.2 in) spread over approximately 1 day. The air will feel fairly comfortable with an average humidity of 68%.

September Temperature in Belem de Sao Francisco

In September in Belem de Sao Francisco, the average temperature is 26°C (80°F). Maximum temperatures can reach 38°C (100°F), while minimum temperatures can drop to as low as 18°C (65°F). This weather makes Belem de Sao Francisco an ideal destination for travelers seeking warm and pleasant conditions.

September Weather in Belem de Sao Francisco: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Belem de Sao Francisco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belem de Sao Francisco, September typically has an average temperature of 26°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 18°C (65°F).

Data source: Temperature data for Belem de Sao Francisco generated using information from the Copernicus Climate Change Service.

September Precipitation in Belem de Sao Francisco

In Belem de Sao Francisco in September, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

September Precipitation Trends in Belem de Sao Francisco

The chart displays monthly precipitation patterns in Belem de Sao Francisco, 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 Belem de Sao Francisco, September typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Belem de Sao Francisco

In Belem de Sao Francisco in September, humidity is 68%. With an average temperature of 26°C (80°F), this humidity feels like quite a muggy embrace, making outdoor activities feel more strenuous and the air thicker, which can be a bit uncomfortable for traveling.

September Average Humidity in Belem de Sao Francisco

This chart illustrates the average monthly humidity levels in Belem de Sao Francisco, 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 Belem de Sao Francisco is approximately 68%, 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 Belem de Sao Francisco

In Belem de Sao Francisco 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 Belem de Sao Francisco.

Maximum UV Index Levels in Belem de Sao Francisco for September

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

Data source: Belem de Sao Francisco 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 Belem de Sao Francisco Compares to Other Months

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

This table compares monthly weather conditions in Belem de Sao Francisco, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	29°C (84°F)	16 mm (0.6 inches)	84%	extreme
February Weather	29°C (84°F)	61 mm (2.4 inches)	89%	extreme
March Weather	28°C (83°F)	101 mm (4.0 inches)	91%	extreme
April Weather	27°C (82°F)	50 mm (2.0 inches)	92%	extreme
May Weather	26°C (80°F)	23 mm (0.9 inches)	90%	extreme
June Weather	25°C (77°F)	18 mm (0.7 inches)	87%	very high
July Weather	24°C (76°F)	15 mm (0.6 inches)	79%	extreme
August Weather	25°C (77°F)	8 mm (0.3 inches)	74%	extreme
September Weather	26°C (80°F)	6 mm (0.2 inches)	68%	extreme
October Weather	28°C (84°F)	3 mm (0.1 inches)	62%	extreme
November Weather	29°C (85°F)	15 mm (0.6 inches)	55%	extreme
December Weather	29°C (84°F)	23 mm (0.9 inches)	58%	extreme