The best time to go to Poilly-Sur-Serein is during the late spring (May to June) or early autumn (September to October) for pleasant weather and fewer crowds.During late spring, the vineyards begin to flourish, and the weather is generally mild and sunny, ideal for exploring the countryside and enjoying outdoor activities. This period avoids the peak summer tourist season, allowing for a more relaxed experience at local wineries and attractions.Early autumn offers a great experience as it coincides with the grape harvest season, known as vendanges. The weather remains agreeable, and you can witness the winemaking process firsthand, often with opportunities to participate in harvest festivals.