Malawi has declared a state of disaster over a severe drought that is affecting most of the country.
The announcement comes less than a month after neighbouring Zambia made a similar move.
Zimbabwe has also seen much of its crops destroyed.
Malawi’s President Lazarus Chakwera has requested more than $200m (£158.5m) in humanitarian aid.
The United Nations’ World Food Programme has said several southern African nations are on the brink of a hunger crisis because of the impact of the El Nino weather phenomenon.