In October, Chengdu transitions into a mild and cool climate with average temperatures ranging from 13°C (55°F) to 21°C (70°F), requiring a versatile wardrobe centered on layering. During the first half of the month, daytime temperatures can reach up to 27°C (81°F), so it is advisable to wear breathable short-sleeved shirts or light dresses paired with trousers. As the month progresses and dampness increases, you should switch to long-sleeved shirts, hoodies, or knit sweaters layered with a light jacket, windbreaker, or trench coat to manage the cooler evenings and significant temperature shifts. For the lower body, jeans, sweatpants, or tailored trousers are ideal, though fleece-lined options may be necessary for the second half of October if a cold front occurs. Because October averages around 13 rainy days, it is essential to pack a compact umbrella or waterproof jacket and wear comfortable, non-slip sneakers or waterproof walking shoes. If your itinerary includes high-altitude areas like Mount Emei or Xiling Snow Mountain, be sure to bring a thick, insulated jacket as temperatures in the mountains can drop near freezing.