The best time to visit Jiuzhaigou County is typically during autumn, from September to November, when the landscape is at its most colourful.
During these months, the leaves on the trees surrounding the lakes and waterfalls turn brilliant shades of red, orange, and yellow, creating stunning reflections in the clear waters. The weather is generally mild and pleasant, making it ideal for exploring the park's many scenic trails and viewpoints. This period offers the most iconic and frequently photographed views of Jiuzhaigou Valley.
However, if you prefer fewer crowds and a different kind of beauty, late spring (April to May) is also a good option. The snowmelt feeds the waterfalls, and the early foliage brings a fresh, green look to the valleys. While not as vibrant as autumn, the spring offers clearer skies and a tranquil experience for those who prefer a more relaxed visit.
For those looking for a truly great experience, winter (December to March) offers a beautiful, snow-covered landscape with frozen waterfalls and a quiet atmosphere.