
Assessment of the Record-Breaking 2020 Rainfall in Guinea-Bissau and Impacts of Associated Floods
The impacts of Climate Change are quite visible in Guinea-Bissau. Greater irregularity
at the beginning and end of the rainy season, as well as in relation to the interannual variability of
precipitation, are evidence that shows these phenomena inWest African countries and particularly
in Guinea-Bissau, where the agriculture is rain-fed. The year 2020 was characterized as very rainy
in comparison to the climatological average of 1981–2020, with positive anomalies throughout the
country, despite the late arrival of the wet season, which usually occurs in May. July, August,
and September 2020 were the rainiest months, registering above a normal frequency of days with
precipitation greater than 50 mm. Bissau, the capital, registered a record-breaking annual rainfall and
monthly amounts higher than the 90th and 95th percentiles in July and August, respectively. This
heavy rain accompanied by strong winds caused flooding in several urban areas and agricultural
fields, and the destruction of roads, houses, and infrastructures in different cities across the country.
As a way of mitigating these impacts, the government, through the Ministry of Solidarity, made
available 100 million CFA francs (6.5 million euros) to help families that were victims of the floods.