September Weather in Bissora, Guinea-Bissau

Last updated: August 23, 2025

In September, the average temperature in Bissora, Guinea-Bissau is a warm 27°C (81°F). Temperatures can vary, with a minimum of 22°C (72°F) and a hot maximum reaching 35°C (95°F). The region experiences significant rainfall, with an average precipitation of 380 mm (14.9 in) spread over 25 days. With an average humidity level of 84%, be prepared for a tropical atmosphere throughout the month!

September Temperature in Bissora

In September in Bissora, the average temperature is 27°C (81°F). Maximums can reach 35°C (95°F) and minimums can drop to 22°C (72°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Bissora.

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

The chart illustrates September temperature patterns in Bissora, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bissora, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (95°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Bissora

In Bissora in September, the precipitation amount is 380 mm (14.9 in) over the course of 25 days.

September Precipitation Trends in Bissora

The chart displays monthly precipitation patterns in Bissora, 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 Bissora, September typically receives around 380 mm (14.9 inches) of precipitation spread over approximately 25 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 Bissora

In Bissora in September humidity is 84%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, moist blanket, making travel uncomfortable and sticky, as every step seems to weigh you down with the heavy air.

September Average Humidity in Bissora

This chart illustrates the average monthly humidity levels in Bissora, 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 Bissora is approximately 84%, 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 Bissora

In Bissora 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 Bissora, you can check here.

Maximum UV Index Levels in Bissora for September

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

Data source: Bissora 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 Bissora Compares to Other Months

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

This table compares monthly weather conditions in Bissora, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	0 mm (0.0 inches)	34%	very high
February Weather	27°C (81°F)	0 mm (0.0 inches)	39%	very high
March Weather	29°C (84°F)	0 mm (0.0 inches)	37%	extreme
April Weather	30°C (86°F)	0 mm (0.0 inches)	49%	extreme
May Weather	30°C (86°F)	4 mm (0.1 inches)	58%	extreme
June Weather	29°C (85°F)	53 mm (2.1 inches)	73%	extreme
July Weather	27°C (82°F)	386 mm (15.2 inches)	80%	extreme
August Weather	27°C (80°F)	463 mm (18.2 inches)	85%	extreme
September Weather	27°C (81°F)	380 mm (14.9 inches)	84%	extreme
October Weather	28°C (83°F)	116 mm (4.6 inches)	82%	extreme
November Weather	28°C (82°F)	18 mm (0.7 inches)	70%	very high
December Weather	26°C (79°F)	0 mm (0.0 inches)	49%	very high