The government says it has relocated just under 27,600 people forced from their homes by the floods in newly built camps.
Some 210 people across the country have died as a result of the floods, with a further 90 missing, according to the latest official estimates. Just this week, more than 50 people were killed when a tide of water swept through villages near the capital.
Torrential rains are forecast to continue throughout the month and 178 dams and water reservoirs pose a high risk of overflowing, the authorities have warned.
What is more, President William Ruto has warned the nation it could be about to experience its first ever cyclone, with Hidaya gaining momentum along the Tanzanian coast on Friday.
In a televised address, he ordered that schools be shut indefinitely.
In neighbouring Tanzania, government spokesman Mobhare Matinyi told the BBC the authorities were on standby and prepared to evacuate people living in coastal areas at risk from the cyclone, which could hit the biggest city, Dar es Salaam.
Residents have been urged to exercise caution.
Other places likely to be affected by the impact of the cyclone include Mtwara, Lindi, Tanga, and Zanzibar.
The country's meteorological agency, TMA, said on Friday that the cyclone was expected to cause heavy rains and strong winds. Some 155 people have already died from flooding in the country.
However, the government has not suspended transport between Dar es Salaam and the islands of Zanzibar.
"We want all people doing maritime activities and transporters to take caution, and follow advice from the meteorology agency so as to reduce risks," said Mr Matinyi.
On Friday afternoon, shops and businesses close to the ocean in Dar es Salaam were operating as normal but some people said they were going home early because of the risk of heavy rains.
Back in Nairobi, Phylis, already forced to leave her home, urged the authorities to have a firm plan when it comes to relocation.
"If the government demolishes our houses, at least give us a solution. Tell us where to go. We don't know where to go," she said.