At least 37 houses have been destroyed and more than a dozen damaged by heavy rains in Rwanda’s Musanze District on Monday.
Rwandans in high-risk flood zones have been warned they are in danger if they fail to relocate to alternative areas.
At least five people were killed and 65 houses destroyed after heavy rain in Rwanda last week.
The UN has warned more than 36 million people in eastern and southern Africa face hunger due to drought and soaring temperatures caused by El Niño.
Twenty-four African nations launched a new initiative on Tuesday to restore forests in the East and Southern African regions.
A British helicopter pilot has been shot dead by Tanzanian poachers, according to the charity he was working for.
Tanzania is turning to fossil fuels as it struggles to produce enough electricity, following a prolonged drought that has crippled the country’s hydropower plants.
Ethiopia is facing nationwide power cuts as a result of low water levels at dams, following a poor rainy season, officials have reported.
Kenya President Uhuru Kenyatta arrived in Paris on Sunday, ahead of the 2015 Climate Change Summit, which begins today.
Displaced families in Kenya’s largest city are demanding an explanation of how Sh5 billion (£32m) set aside for El Niño has been spent.