(AFP) - Heavy rain battered northern Mozambique on Monday as residents and relief workers confronted devastation wrought by Cyclone Kenneth, the strongest cyclone to ever hit Africa, which killed 38 people and destroyed thousands of homes.

Roads have been washed away, fields submerged and many buildings wrecked by the storm, which came weeks after Cyclone Idai struck the Mozambican city of Beira, 1,000 kilometres (620 miles) to the south.

Cyclone Kenneth made landfall late on Thursday in Cabo Delgado province, packing wind gusts of up to 220 kilometres per hour.

The UN Office for the Coordination of Humanitarian Affairs (OCHA) described it as the strongest cyclone to ever lash the continent, and predicted further heavy rain over the coming days.

"Cyclone Kenneth made landfall at the end of the rainy season, when river levels were already high, increasing the risk of river flooding," the UN agency said in its latest update.

"Humanitarian needs in Mozambique have sky-rocketed, and the humanitarian response will need to rapidly scale-up."

According to figures provided by the Mozambique authorities to NGOs, around 200,000 people in Pemba city, the capital of Cabo Delgado, are in danger.

The National Institute of Disaster Management (INGC) said 38 people have died, 39 have been injured, more than 23,000 people are without shelter and nearly 35,000 homes have been either partly or completely destroyed.

Before smashing into Mozambique, the cyclone hit the Comoros islands, killing at least three people and damaging 75,000 homes.

- 'We don't know what we'll do' -

"The water came inside the house and all the way to the backyard," said Sumala Cabila, 23, standing in his family home in Pemba's working-class Paquite suburb which flooded on Sunday morning.

As rain poured down and roads in the district became unpassable except for 4-wheel-drive vehicles, Cabila's sister struggled to look after her one-month-old child.

"If it continues to rain. we don't know what we'll do," he said as water streamed of his slanted roof.

Fellow resident Tina Machude, whose home was largely flattened, said she had watched houses fall one by one in the storm and floods.

"Everything was falling... properly built houses too," she told AFP. "We went outside running, so that things wouldn't fall on us, especially the children.

"To rebuild this home, we will have to demolish it and start again."

In Pemba, a tourist destination, staff mopped up pools of water at a hotel and collected tree branches out of the lobby fountain, while labourers struggled to clear out the city's drainage system blocked by flood debris.

"(We) planned to mobilise as much aid as possible to Ibo and also from there to Quissanga," said UN OCHA official Saviano Abreu, naming two areas outside Pemba worst hit by storm damage and flooding.

"It was the priority for government and humanitarian organisations, as these two areas are in urgent need.

"We managed to send one flight with World Food Programme (WFP) supplies of rice and biscuits, and some non-food items. But unfortunately the weather conditions are changing too fast and threatening the operation. It's raining again and the second flight couldn't go."

To the north of Pemba, the town of Macomia was also badly hit, with homes and businesses destroyed, roofs torn off, trees and electric pylons uprooted.

"We have grave fears for the thousands of families currently taking shelter under the wreckage of their homes. They urgently need food, water and shelter to survive the coming days," said Nicholas Finney, head of Save the Children's response team in Mozambique.

The northern region hit by Cyclone Kenneth is more sparsely populated than Beira, which was hit by Cyclone Idai in mid-March when about 1,000 people were killed in Mozambique and Zimbabwe.

But the area has also been hard hit by deadly raids by a jihadist group over the past 18 months that the army has been unable to control.

© Agence France-Presse