Bulgaria's fire service said crews put out 42 fires over the past 24 hours. One person was hurt.
Firefighters answered 102 calls for incidents.
Seventeen of the fires caused direct property damage. Ten of them were in homes and three in vehicles.
The other 25 fires caused no direct damage. Of these, 16 were rubbish fires, more than at any other type of site.
Firefighters also carried out 58 rescue and assistance operations. Five were after road crashes. The other 49 were technical help and support in various cases, including for injured people.
Two false alarms were also recorded.