Bissau Weather & Climate: Best Time to Visit
The climate in Bissau, Nara, Mali, is remarkably consistent, with temperatures year-round averaging 33°C (91°F). The warmest month is March at 35°C (95°F), and the coolest is January at 30°C (86°F).
Rainfall is high, totalling around 1382 mm (54 in) per year. August is the wettest month and March the driest. The city also experiences distinct dry (November to May) and wet (July to September) seasons. March is the sunniest month, averaging 10.0 hours of sunshine per day.
Monthly Temperature in Bissau
In Bissau temperatures are generally consistent throughout the year. Average maximum daytime temperatures range from a very hot 35°C (95°F) in March, the warmest time of the year, to a very warm 30°C (86°F) during cooler months like January.
At night, you can expect temperatures ranging from 26°C (79°F) in March to around 21°C (70°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Bissau
Bissau experiences significant rainfall throughout the year, averaging 1382 mm (54 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, August it receives heavy rainfall, averaging 461 mm (18 in) of precipitation, recorded across 22 rainy days. In contrast, the driest month March brings less rainfall, with 0.1 mm (0 in) over 0 rainy days. For more details, please visit our Bissau Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Bissau
Seasonal changes in sunshine hours are quite dramatic in Bissau. While March receives considerable daily sunshine with up to 10.0 hours, August marks the darkest time of the year, where sunshine is scarce with only 4.0 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Bissau
The mean water temperature over the year ranges from 23°C (73°F) in February to 27°C (81°F) in July.
Water temperature over the year
Humidity in Bissau by Month
The relative humidity is high throughout the year in Bissau.
The city experiences its highest humidity in August, reaching 85%. In January, the humidity drops to its lowest level at 43%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Bissau 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Bissau
The weather in Bissau maintains consistently warm temperatures between 30°C (86°F) and 35°C (95°F) year-round. Plan your visit during the dry season in January, February, March, April, May, November and December, when the weather is most comfortable and ideal for exploring.The climate is defined by its distinct wet and dry seasons, offering predictable patterns to help you plan your trip. Be prepared for the wet season during July, August and September, when the area receives significant precipitation. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
