September Weather in Guadalupe, Sao Tome and Principe

Last updated: August 31, 2025

In September, the average temperature in Guadalupe, Sao Tome and Principe hovers around 25°C (78°F), with a minimum of 24°C (76°F) and a maximum reaching 27°C (80°F). Expect about 70 mm (2.8 in) of precipitation spread over 12 days, and prepare for a humid atmosphere with an average humidity of 86%.

September Temperature in Guadalupe

In September, in Guadalupe, the average temperature is 25°C (78°F). The maximum can reach 27°C (80°F), and the minimum can be as low as 24°C (76°F). This pleasant climate makes for a great travel destination during this time.

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

The chart illustrates September temperature patterns in Guadalupe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guadalupe, September typically has an average temperature of 25°C (78°F), with highs reaching up to 27°C (80°F) and lows dropping to around 24°C (76°F).

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

September Precipitation in Guadalupe

In Guadalupe in September, the precipitation amount is 70 mm (2.8 in) over the course of 12 days.

September Precipitation Trends in Guadalupe

The chart displays monthly precipitation patterns in Guadalupe, 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 Guadalupe, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 12 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 Guadalupe

In Guadalupe in September, humidity is 86%. With an average temperature of 25°C (78°F), this humidity feels like a warm, damp blanket wrapping around you, making outdoor activities challenging and potentially uncomfortable for traveling.

September Average Humidity in Guadalupe

This chart illustrates the average monthly humidity levels in Guadalupe, 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 Guadalupe 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 Guadalupe

In Guadalupe 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 Guadalupe.

Maximum UV Index Levels in Guadalupe for September

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

Data source: Guadalupe 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 Guadalupe Compares to Other Months

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

This table compares monthly weather conditions in Guadalupe, 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 (81°F)	122 mm (4.8 inches)	75%	extreme
February Weather	27°C (82°F)	114 mm (4.5 inches)	75%	extreme
March Weather	28°C (82°F)	145 mm (5.7 inches)	73%	extreme
April Weather	28°C (82°F)	173 mm (6.8 inches)	74%	extreme
May Weather	27°C (81°F)	175 mm (6.9 inches)	75%	extreme
June Weather	26°C (79°F)	56 mm (2.2 inches)	76%	very high
July Weather	25°C (77°F)	23 mm (0.9 inches)	76%	very high
August Weather	25°C (77°F)	34 mm (1.3 inches)	83%	extreme
September Weather	25°C (78°F)	70 mm (2.8 inches)	86%	extreme
October Weather	26°C (79°F)	188 mm (7.4 inches)	85%	extreme
November Weather	26°C (80°F)	245 mm (9.7 inches)	81%	extreme
December Weather	26°C (80°F)	258 mm (10.1 inches)	76%	extreme