May Weather in Bissau, Guinea-Bissau

Last updated: August 23, 2025

In May, the average temperature in Bissau, Guinea-Bissau is a warm 28°C (84°F), with a minimum of 22°C (71°F) and a peak reaching up to 40°C (104°F). Travelers can expect minimal precipitation, with an average of only 1 mm (0.1 in) recorded over 0 days. The average humidity stands at a comfortable 76%, making it a great time to explore!

May Temperature in Bissau

In May in Bissau, the average temperature is 28°C (84°F). The maximum can reach 40°C (104°F), while the minimum can be as low as 22°C (71°F). Be prepared for warm weather and stay hydrated while exploring the vibrant attractions this destination has to offer.

May Weather in Bissau: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Bissau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bissau, May typically has an average temperature of 28°C (84°F), with highs reaching up to 40°C (104°F) and lows dropping to around 22°C (71°F).

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

May Precipitation in Bissau

In Bissau in May, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.

May Precipitation Trends in Bissau

The chart displays monthly precipitation patterns in Bissau, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Bissau, May typically receives around 1 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Bissau

In Bissau in May humidity is 76%. With an average temperature of 28°C (84°F), this humidity feels like a warm and sticky embrace, making outdoor activities exhausting and travel less comfortable, as every step seems to pull on your energy.

May Average Humidity in Bissau

This chart illustrates the average monthly humidity levels in Bissau, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Bissau is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Bissau

In Bissau in May, 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 Bissau.

Maximum UV Index Levels in Bissau for May

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

Data source: Bissau May 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 May Weather in Bissau Compares to Other Months

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

This table compares monthly weather conditions in Bissau, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	0 mm (0.0 inches)	57%	very high
February Weather	27°C (82°F)	0 mm (0.0 inches)	64%	very high
March Weather	28°C (83°F)	0 mm (0.0 inches)	64%	extreme
April Weather	29°C (84°F)	0 mm (0.0 inches)	73%	extreme
May Weather	28°C (84°F)	1 mm (0.1 inches)	76%	extreme
June Weather	28°C (84°F)	52 mm (2.0 inches)	80%	extreme
July Weather	27°C (81°F)	453 mm (17.8 inches)	81%	extreme
August Weather	27°C (80°F)	539 mm (21.2 inches)	86%	extreme
September Weather	27°C (81°F)	369 mm (14.5 inches)	84%	extreme
October Weather	28°C (83°F)	134 mm (5.3 inches)	80%	extreme
November Weather	29°C (84°F)	24 mm (0.9 inches)	73%	very high
December Weather	27°C (81°F)	0 mm (0.0 inches)	65%	very high