The best time to visit Bulgaria is in the summer, around July or August; that’s when it’s least cold. Spring- late April or early May- and autumn- late September and early October- are good times to be in the country, if you don’t mind slightly chilly weather. What’s particularly good about visiting Bulgaria in the spring or autumn is that it’s off-season, and you won’t find yourself being jostled about by crowds of fellow tourists. Winter (December to April) is good only if you like winter sports- especially skiing- and don’t mind the cold.