Poland in September

May through September delivers the best weather, with July and August bringing peak crowds and highest prices. June offers the sweet spot – warm days around 22°C, long daylight hours until 9pm, and festival season without overwhelming tourist masses. September brings beautiful autumn colors to the Carpathian Mountains and fewer crowds in major cities. Winter can be magical for Christmas markets in Krakow's Main Square, but expect temperatures around -5°C and shorter days. May sees everything blooming but occasional rain showers. August brings the hottest weather but also the busiest attractions – book accommodations months ahead. Spring and fall offer the best value, with hotel prices dropping 30-40% compared to summer peaks.