It is unclear how many people have died, but a teacher in one village told the ABC five people, including children, lost their lives, and another said locals felt forgotten.
Since the middle of last year, PNG has been experiencing its most severe El Nino-induced drought since 1997-1998.
Rain in many parts of the country helped fill waterways and replenish some of the subsistence crops villagers rely on for food, but aid groups and researchers have said the rain also triggered a dangerous phase of the drought.
