Climate averages 1991–2020

Weather in Bulgaria.

ClimaNote covers 10 cities in Bulgaria, starting with Sofia, Plovdiv and Varna. Open a city for charts and a table of all 12 months, or open a month for a side-by-side comparison of cities in the atlas.

Across these cities the yearly average high ranges from 14.7°C in Pernik to 17.5°C in Stara Zagora (tied with Pleven), and yearly rainfall from 513 mm in Pernik (tied with Plovdiv) to 841 mm in Sliven. The hottest city-month is August in Pleven, with an average high of 29.3°C, and the coolest is January in Pernik, at 3.4°C. By single month, the most rain falls in May in Sliven, with 106 mm, and the least in August in Plovdiv, with 24 mm.

August is the warmest month in every city; January is the coolest in every city. May is the wettest month in 4 cities, June in 3 and October in 2 (in 1 other city two or more months tie); August is the driest in 6 cities, January in 1 and February in 1 (in 2 other cities two or more months tie). None of these cities has a month with an average high below 2.0°C, a month with under 1 mm of rain or a month with more than 300 mm of rain.