Temperatures have dropped below zero across the country. The freezing weather will persist in the coming days.
Despite the cold, many people are forced to work outdoors every day.
How are those working in Varna coping in these difficult conditions?
Early this morning, at a temperature of minus 10 degrees, ornithologists and volunteers began counting waterfowl in the Varna Lake area.
Velina Panamska, volunteer with the Bulgarian Society for the Protection of Birds: We are prepared with warming gloves, warming clothes, enthusiasm, hot drinks.... Hristo Apostolov, Bulgarian Society for the Protection of Birds: We spend a long time outdoors, but that doesn't bother us in any way. The work needs to be done.
There are also enthusiasts at the cooperative market in Varna.
Although the thermometers show 7 degrees below zero, there are a few traders here who are selling their goods.
It's difficult in sub-zero temperatures. Now, if there's wind, we won't be able to endure it and we'll go home. It's harder for us, but there's no other way - we have to work.
Seva bakes bread and snacks at the market. And she shares that in the icy days she has reduced working hours.
The employer makes a compromise, calls constantly throughout the day to ask what the temperature is, whether there are customers. He won't leave us here until 8 o'clock, so we turn into icicles.
The cold is most dangerous for people who live on the street. The homeless shelter in the city continues to accept people who are freezing, although their capacity is full.
Marko Markov, director of the Complex for Social Services for Homeless Persons and Families - Varna: People are happy that we take them in and they come to a warm place. When we brought three of the users, one went and hugged the radiator. He was so happy that he was taken in somewhere and would have some shelter.
The shelter promises that they will not leave those in need on the street.
Authors: Nivelina Nyagolova-Georgieva and Petar Doykinski