Gentle winds (0 to 5 m/s) are predominant in the city with wind speeds of up to 1 m/s, representing 95% of all winds during the year.Mists are common in the cooler months, especially along the banks of the Maritsa.
Because of these hills, Plovdiv is often referred to in Bulgaria as "The City of the Seven Hills".Plovdiv is host to a huge variety cultural events such as the International Fair Plovdiv, the international theatrical festival "A stage on a crossroad", the TV festival "The golden chest," and many more novel festivals, such as Night/Plovdiv in September, Kapana Fest, and Opera Open.Ammianus Marcellinus wrote in the 4th century CE that the then city had been the old Eumolpias/Eumolpiada, ( of the other as it kept all consonants of the name Philip deva (city).Although the two names sound similar, they may not share the same origin as Odrin and Adrianople do, and Pulpudeva may have predated the other names Plovdiv is located on the banks of the Maritsa river, southeast of the Bulgarian capital Sofia.Numerous nations have left their traces on the twelve-metre-thick (39-foot) cultural layers of the city.
The earliest signs of habitation on the territory of Plovdiv date as far back as the 6th millennium BCE.The city is in the southern part of the Plain of Plovdiv, an alluvial plain that forms the western portion of the Upper Thracian Plain.From there, the peaks of the Sredna Gora mountain range rise to the northwest, the Chirpan Heights to the east, and the Rhodope mountains to the south.Summer (mid May to late September) is hot, moderately dry, and sunny with a July and August having an average high of 33 °C (91 °F). The average depth of snow coverage is 2 to 4 cm (1 to 2 in), and the maximum is normally 6 to 13 cm (2 to 5 in), but some winters coverage can reach 70 cm (28 in) or more. The days are mild and relatively warm in mid spring.Plovdiv sometimes experiences very hot days which are typical in the interior of the country. Autumn starts in late September; days are long and relatively warm in early autumn. The average January temperature is −0.4 °C (31 °F). The average relative humidity is 73% and is highest in December at 86% and lowest in August at 62%.It remained within the borders of Bulgaria until July of the same year, when it became the capital of the autonomous Ottoman region of Eastern Rumelia.