Firefighters have been called out to more than four fires in four days in rural Nova Scotia, forcing more than a dozen people out of their homes and leaving one man with serious injuries.

Between Friday and Monday, fires broke out in Truro, McCallum Settlement, Weymouth North, and Bridgewater.

The first blaze began Friday in McCallum Settlement where a man suffered burns to 50 per cent of his body while trying to save the house, according to the Truro Daily News.

The man is in the Queen Elizabeth II Health Sciences Centre in Halifax.

An apartment fire in Truro late Saturday left seven people without homes. The fire happened at 63 Pleasant St. where a family of five lived in one apartment and two people lived in another unit.

The Canadian Red Cross said no one was injured, and it's helping the tenants with food and shelter.

Five more people were affected by blazes in Weymouth North and five people in downtown Bridgewater Monday morning.

There was also a garage fire in Truro Saturday, which may have been started by sparks from a backyard campfire.

It's not known what caused the rest of the fires.

Dan Bedell, spokesman with the Canadian Red Cross, said most fires happen over the winter months.

"Between late fall and late spring is when we see typically a spike in the number of house fires," he said.

"Quite often it's related to a heating source and … we tend to see more when it's really cold and you've got perhaps a lot of unconventional heat sources like space heaters and wood stoves and things that are in operation."