The Federation of Red Cross and Red Crescent Societies says there's been significant damage to crops in North Korea, following Typhoon Bolaven, and other severe weather.
North Korean authorities say Typhoon Bolaven which hit last week, killed 48 people and left more than 50 others injured or missing, as well as damaging up to 50,000 hectares of farmland.
Francis Markus, from the Federation of Red Cross and Crescent Societies in Beijing, told Radio Australia it's difficult to gauge the full effect of the typhoon, partly because some areas remain inaccessible.
But he says there has been significant damage to maize crops.
"What we have seen is the further battering of some communities which were already very vulnerable in terms of food security and in terms of disaster preparedness," Mr Markus said.
12:54 EST Southern New South Wales and the ACT had a chilly start to the weekend, with some places seeing their coldest May night in half a decade.