Hangzhou Weather in September

September brings relief from the summer heat, with milder temperatures and lower humidity. It's a pleasant month for outdoor activities, though occasional rain persists. Crowds are moderate as the summer holiday ends.

Pack light layers, a light jacket for evenings, and an umbrella. Comfortable walking shoes are ideal for exploring. Sunscreen is still recommended for sunny days.

Mid-Autumn Festival may fall in September or October, bringing crowds to West Lake for moon viewing. Book accommodations early if traveling during the festival. The weather is generally comfortable, but keep a light raincoat handy.