September Weather in Sao Joao dos Angolares, Sao Tome and Principe

Last updated: August 31, 2025

The average temperature in Sao Joao dos Angolares, Sao Tome and Principe during September is a pleasant 25°C (77°F). Expect minimums of 24°C (75°F) and maximums reaching 26°C (80°F). However, don't forget your umbrella, as precipitation averages around 53 mm (2.1 in) over 9 days, accompanied by high humidity levels of 86%.

September Temperature in Sao Joao dos Angolares

In September in Sao Joao dos Angolares, the average temperature is 25°C (77°F). The maximum can reach 26°C (80°F), while the minimum can dip to as low as 24°C (75°F). This makes Sao Joao dos Angolares an ideal destination for travelers seeking mild and pleasant weather during their visit.

September Weather in Sao Joao dos Angolares: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sao Joao dos Angolares, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Joao dos Angolares, September typically has an average temperature of 25°C (77°F), with highs reaching up to 26°C (80°F) and lows dropping to around 24°C (75°F).

Data source: Temperature data for Sao Joao dos Angolares generated using information from the Copernicus Climate Change Service.

September Precipitation in Sao Joao dos Angolares

In Sao Joao dos Angolares in September, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.

September Precipitation Trends in Sao Joao dos Angolares

The chart displays monthly precipitation patterns in Sao Joao dos Angolares, 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 Sao Joao dos Angolares, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 9 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 Sao Joao dos Angolares

In Sao Joao dos Angolares in September, humidity is 86%. With an average temperature of 25°C (77°F), this humidity feels like you are wrapped in a warm, heavy blanket, making travel a bit challenging as you may find yourself frequently seeking shade and hydration while navigating the vibrant streets.

September Average Humidity in Sao Joao dos Angolares

This chart illustrates the average monthly humidity levels in Sao Joao dos Angolares, 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 Sao Joao dos Angolares is approximately 86%, 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 Sao Joao dos Angolares

In Sao Joao dos Angolares 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 Sao Joao dos Angolares.

Maximum UV Index Levels in Sao Joao dos Angolares for September

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

Data source: Sao Joao dos Angolares 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 Sao Joao dos Angolares Compares to Other Months

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

This table compares monthly weather conditions in Sao Joao dos Angolares, 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)	129 mm (5.1 inches)	75%	extreme
February Weather	27°C (81°F)	130 mm (5.1 inches)	75%	extreme
March Weather	27°C (81°F)	148 mm (5.8 inches)	73%	extreme
April Weather	27°C (81°F)	158 mm (6.2 inches)	74%	extreme
May Weather	27°C (80°F)	154 mm (6.1 inches)	75%	extreme
June Weather	25°C (78°F)	39 mm (1.5 inches)	76%	very high
July Weather	24°C (76°F)	17 mm (0.7 inches)	76%	very high
August Weather	24°C (76°F)	26 mm (1.0 inches)	83%	extreme
September Weather	25°C (77°F)	53 mm (2.1 inches)	86%	extreme
October Weather	26°C (79°F)	171 mm (6.7 inches)	85%	extreme
November Weather	26°C (79°F)	229 mm (9.0 inches)	81%	extreme
December Weather	26°C (80°F)	257 mm (10.1 inches)	76%	extreme