"There are now 158,000 victims," National Institute of Disaster Management spokeswoman Rita Almeida told AFP.
Zambezia province in the centre of the country was worst affected with 134 killed and 125,000 affected since mid-January.
Heavy rains again pounded the southern African country this weekend, raising fears of further flooding.
Mozambique's deadliest floods were in 2000 when an estimated 800 people were killed.
With 80 per cent of Mozambique's population dependent on agriculture which represents 25 per cent of Gross Domestic Product, the impact of the floods on the economy will likely be significant.
