A total of 62 people, including eight children, have died after floods hit Kenya last week.
The capital Nairobi was the worst hit with 33 deaths, police said on Saturday.
It is up since the tally issued last week, which put the death toll at 42.
More than 2,000 families have been displaced across the country after days of intense rain.
Footage online shows cars being swept away in waist deep flash floods.
It has also forced disruption to flights from Jomo Kenyatta International Airport in Nairobi, the biggest airport in East Africa.
Kenya is not the only country in the region to be affected.
Three days of mourning have been declared in neighbouring Ethiopia after 80 people died in landslides triggered by flooding.
Another 3,461 people have been displaced by the landslides, according to the Ethiopian Human Rights Commission.
Previous rain seasons have seen flooding, landslides and mudslides that have left hundreds of people dead and seen thousands of others displaced.
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The region is expected to see more rain and governments have urged residents to exercise caution.
Last month, the IGAD Climate Prediction and Applications Centre said the March-April-May rainy season has a 45% chance of above-average rainfall across most countries in the region, including Ethiopia and Kenya, as well as Uganda, Rwanda, Burundi, Tanzania, South Sudan, Northern Somalia, and Djibouti.
