A koala has been reunited with the heroic grandmother who rescued him from a NSW bushfire near Long Flat, 49 kilometres west of Port Macquarie.

Local resident Toni Doherty was visibly emotional as she visited the koala, dubbed Lewis after one of her grandchildren, at Port Macquarie Koala Hospital on Wednesday.

In a video that went viral this week, Doherty was seen rushing to the koalas aid, wrapping the animal in her shirt and pouring water over it.

It was terrifying to see him just come out of the flames and he looked so defenceless running along the road, Doherty told Nine News.

I knew I needed to put something around him as I ran to the tree, so I just took off my shirt and covered him with it. I just tried to get him out of the fire, it was so hot and so frightening.