Seoul's Unification Ministry seven million dollars would go to World Food Programme (WFP) projects in the North, and USD 6.3 million to the World Health Organisation (WHO).
The decision came a month after the ministry approved USD 2.9-million in financial support for Seoul civic groups providing assistance to North Korea. It was the first time that Seoul had funded such civic projects in four years, after the government imposed tough economic sanctions on Pyongyang.
The South cut off most trade with and aid to the North in 2010 after the sinking of the naval corvette Cheonan with the loss of 46 lives. Seoul accused Pyongyang of torpedoing the ship, although the North has always angrily denied involvement.
Cross-border ties have remained largely icy for years since then, but Seoul has occasionally offered funds for UN projects in the North on humanitarian grounds. But today's announcement marks the first funding for the WFP since 2007.
The UN estimates that nearly 2.4 million people in the impoverished North need regular food assistance and 28 per cent of children under five suffer chronic malnutrition. Pyongyang has been playing hawk and dove in recent months, carrying out an extended series of missile tests while making occasional peace gestures towards Seoul.
The North had proposed sending athletes and cheerleaders to the Asian Games that begin late September in the South Korean city of Incheon. But talks to sort out logistics fell apart last month with the North accusing the South of arrogance, and threatening to boycott the event.