Plovdiv's winters are chilly, with temperatures often dropping below freezing in January and December, averaging around 3-4°C. Spring brings mild temperatures, gradually warming up from March to May, with April being the warmest month of the season, reaching averages of 10°C. Summers are hot, with July and August sharing the highest average temperature of 26°C, while June is slightly cooler but still pleasant, averaging around 21°C. Autumn is characterized by a slow cooling down, with September being the last relatively warm month before temperatures drop again in October and November, which are similar to winter months in terms of temperature range.