Perak was the latest state to be hit by floods on Sunday, while the situation was worsening in six other states, causing at least 21,000 people to be evacuated to relief centres.
Malaysian PM says rainfall on Friday and Saturday was equivalent to total monthly amount in normal conditions.
Tens of thousands of people have been displaced after torrential rains caused floods in Malaysia, the state news agency Bernama has reported.
Prime Minister Ismail Sabri Yaakob late on Saturday told a media conference that the heavy rainfall that started Friday morning was equivalent to the total rainfall for a month in normal conditions.
The prime minister promised swift aid to flood victims as well as an initial allocation of 100 million ringgit ($23.7million) to repair damaged houses and infrastructure.
More than 66,000 personnel from the police, army and fire department have been mobilised.
Rohkidah Yusof, 60, was delivering food to a customer but found herself trapped with her two children and two grandchildren in a neighbouring suburb after rising waters made it impossible for the family to drive home on Saturday.