The country suffered a devastating famine in the 1990s and has relied on international food aid, but support has fallen sharply in recent years, because of its curbs on humanitarian workers and reluctance to allow monitoring of food distribution.
The North Korea's KCNA news agency said late on Tuesday that paddies around the country, including the main rice farming regions of Hwanghae and Phyongan provinces, were drying up for lack of rain. Rice must be partly submerged in order to grow.
"The worst drought in 100 years continues in the DPRK, causing great damage to its agricultural field," KCNA said, using the short form of the North's official name, the Democratic People's Republic of Korea.
South Korea's Unification Ministry, which handles ties with the North, did not have a comment on Wednesday about the report.
North Korea's farm production periodically suffers from droughts and floods in the summer, although the state has learned to cut damage by updating farming methods and switching to crops other than rice in recent years.
Thomas Lehman, Denmark's ambassador to both North and South Korea, told Reuters that on a visit to the North late last month he could "clearly see" attempts to deal with the drought in its fields.
"The lack of water has created a lot of damage to the so-called spring crop, and the rice planting is extremely difficult without sufficient water," said Lehman, who has spoken to UN officials about the drought, and visited drought-hit areas.
North Korea has mounted a campaign encouraging the public to help out on farms, and is using mobile water pumps run on diesel and longer pipes to draw water into fields.
"Farm managers reported receiving training in dry rice planting techniques and other measures that they were trying to conserve water," said Linda Lewis of the American Friends Service Committee, a group that runs farm projects in the North.
The UN resident coordinator for North Korea, Ghulam Isaczai, warned in a Reuters interview last month of a looming crisis due to last years drought, caused by the lowest rainfall in 30 years.
At the time, Isaczai said he thought the food situation would not be as bad as in previous major droughts, since communities were now more resilient and might have reserves.
In April, the United Nations called for $111 million to fund crucial humanitarian needs this year in North Korea, which it said remains drastically under-funded.
Funding for UN agencies in North Korea fell to less than $50 million in 2014, from $300 million in 2004.
North Korea relies heavily on hydroelectric power and suffers from chronic electricity shortages, which can be exacerbated by periods of no rain.
South Korea has also received sharply lower rainfall, particularly in the northern regions, which have got about half the rain of an average year, the national weather agency says.
In early June, Pyongyang's propaganda officials produced two new posters and slogans to spur the fight on drought.
"Let's mobilize the masses and fight with all our strength against the drought," read one poster that showed a smiling farmer gesturing towards a field of workers with red flags and spades.
Editor: Ade P Marboen
Copyright © ANTARA 2015
