Plovdiv weather in September
September in Plovdiv: warm, dry, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Plovdiv · #53 of 1413 destinations to visit in September · comfort 94/100 (tier S)
- Days
- 28°C
- Nights
- 14°C
- Wet days
- 4
- Sun
- 10.4 h
- Humidity
- 55%
- Daylight
- 13 h
Traveller notes on Plovdiv in September
Forum posters call September a genuinely good time to visit Bulgaria - cooling gradually from summer, with harvest season bringing the country's food to its best, though the weather itself stays a mixed bag: plenty of great sunny stretches alongside a real chance of rain and thunderstorms. Bulgarian summer is described as running unusually long, from late April sometimes through the first weeks of October, so September can still deliver warm days up to 35C on occasion even as the season turns. For Plovdiv itself, posters consistently recommend budgeting a couple of days for the historic architecture, Roman ruins and the city's strong restaurant and hotel scene.
Other months in Plovdiv
Forum posters describe March in Bulgaria as genuinely unpredictable, capable of a bright sunny day and a snowstorm within the same short stretch, with coastal areas typically in the teens Celsius, not especially windy, and often surprisingly sunny and warm-feeling despite it still being early spring. Posters generally recommend preparing for temperatures around freezing and wet, muddy ground with suitable footwear regardless of the specific forecast. Posters describe mountain areas as still fully wintry this time of year, with lakes completely frozen and covered in roughly a meter of snow, and temperatures there swinging as widely as +10C to -20C. Posters generally describe Plovdiv itself as a substantial, historic city rather than a small town, worth a proper visit regardless of March's variable weather.
Add your own note from Plovdiv's card on the map.
Plovdiv climate normals — September
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Plovdiv in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsUnification Day and City Day, Night of Museums and Galleries, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Plovdiv's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherPlovdiv's best weather comes in April, May and September — separate windows, not one continuous season.
September includes Night of Museums and Galleries.
Best weatherFair weatherToughest weather
What's on in Plovdiv in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Opening
Roman theatre season
20 May – 30 Sep · usuallySummer season opensOpera, drama and touring concerts move into the second-century theatre on the hill for the warm half of the year — it seats about five thousand and is still a working venue, not a ruin with a rope round it. Source ↗
- Holiday
Unification Day and City Day
5–7 SepNational holidayCrowdedClosuresThe 1885 unification of Bulgaria was proclaimed here, so 6 September is both the national holiday and Plovdiv's own: a re-enactment outside the old parliament building, concerts, and a long weekend for the whole country. Source ↗
- Festival
Night of Museums and Galleries
10–30 Sep · usuallyArts festivalCrowdedGalleries, courtyards and half the buildings in Kapana open late for one long weekend in September, free, with the crowd moving between them on foot. The one weekend the creative quarter earns the name. Source ↗
- Season
International Fair weeks
15 Sep – 5 Oct · usuallyBook earlyThe trade fair grounds across the Maritsa have run since 1892 and the autumn editions fill the city's hotels with exhibitors rather than visitors. Worth checking the dates before booking a September room. Source ↗
Nearby, and something's on
Within 300 km of Plovdiv — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Plovdiv?
Plovdiv in September — FAQ
- Is September a good time to visit Plovdiv?
- September in Plovdiv: warm, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Plovdiv on SeasonMap's comfort score (94/100).
- What is the weather like in Plovdiv in September?
- In September, Plovdiv averages a daily high of 27.7°C and a low of 14°C, with about 18.9 mm of rain over roughly 3.6 rainy days.
- What is the air quality in Plovdiv in September?
- Plovdiv has a mean US Air Quality Index of about 39 in September.
Within 300 km: Bucharest's George Enescu Festival around 27 Aug – 26 Sep, and Borovets' Musala and the Rila trails around 15 Jun – 30 Sep.