Chongqing Weather and Climate in September

September in Chongqing signals the end of the scorching summer with gradually cooling temperatures and slightly lower humidity. Daytime highs typically range from 27–31°C (81–88°F) in the early part of the month, cooling to 24–28°C (75–82°F) by late September. Nights remain warm, often dropping to 19–23°C (66–73°F). Rainfall is still noticeable but begins to decrease, averaging around 110–150 mm over 10–14 days, mostly as afternoon or evening showers.

This is a good shoulder season for visiting Chongqing. You’ll enjoy more comfortable conditions than midsummer, beautiful early autumn scenery along the Yangtze River and hills, fewer extreme heat days, and gradually thinning crowds after the peak summer period.

Chongqing

29.5600°N, 106.5500°E

Sunrise 14:20

Sunset 03:37

33°C

Clear sky

Feels Like 36°C

Humidity 52%

Wind 1.1 m/s

Pressure 1003 hPa

Visibility 10 km

Clouds 1%

2026-08-13 10:41 Data by OpenWeatherMap

Chongqing Season in September: Early Autumn

September brings the welcome transition from hot, humid summer to milder early autumn weather in Chongqing. Days start warm and suitable for sightseeing, while evenings feel slightly cooler and more refreshing. Precipitation remains moderate as the rainy season slowly winds down.

It is widely regarded as a favorable month to visit Chongqing — more bearable temperatures, reduced heat stress, and a lively atmosphere before the cooler autumn months.

Cooling but Comfortable Temperatures

September delivers easing summer heat to Chongqing. In the first half of the month, daytime highs often reach 28–31°C (82–88°F) on sunny days, with lows around 22–24°C (72–75°F). Midday can still feel warm and humid, but it is noticeably more comfortable than July and August.

In the second half, temperatures drop gradually. Highs typically hover around 24–27°C (75–81°F), while lows fall to 19–22°C (66–72°F). The growing day-night difference makes evenings particularly pleasant for riverside walks and night views.

Moderate Precipitation and Humid Days

Chongqing sees moderate rainfall in September, averaging about 110–150 mm across roughly 10–14 days, often as short but intense showers or thunderstorms. Rainfall tends to decrease toward the end of the month.

3 Days Chongqing Highlights Tour with Dazu Rock Carving

Tour Route：Chongqing-Baiyefang Old Street of Tiancheng Lane in Chongqing

Tour Type：City Tours / Classic China Tours / Family Tours

3 Days

1 Places

View Detail

Cloudy and overcast skies are common, with occasional fog adding to the city’s characteristic misty atmosphere. Sunny breaks become more frequent later in the month, improving views of the Yangtze River and surrounding hills.

Daylight Hours and Sunshine

Daylight remains long, starting at around 12.5 hours early in the month and shortening to about 11.8 hours by late September. Sunshine hours average 5–6 per day. The UV index stays relatively high on clearer days, so protection is still recommended.

Averages for Chongqing Weather in September

Temperature: 23–25°C / 73–77°F High Temperature: 28°C / 82°F Low Temperature: 21°C / 70°F Humidity: ~78–82% Rainfall: 110–150 mm Rainy Days: 10–14 days

A Recommended Visiting Month

September is a recommended time for visiting Chongqing as the extreme summer heat begins to fade. Crowds start to ease, letting you enjoy Hongya Cave, Ciqikou Ancient Town, and Yangtze River views more comfortably. Hotel rates are often more attractive than in peak summer.

The warm yet improving weather and early autumn foliage enhance the dramatic hilly landscapes and riverside scenery, making it suitable for most travelers who prefer milder conditions.

Recommended Outfits for Visiting Chongqing in September

Early September: Light, breathable clothing such as short-sleeve shirts, polo shirts, shorts or light trousers, and comfortable dresses. A thin long-sleeve shirt or light jacket is useful for air-conditioned spaces and evenings.

Late September: Add long-sleeve shirts, thin sweaters, or light jackets, especially for mornings and nights.

Shoes: Comfortable walking shoes with good grip are essential — Chongqing’s hilly streets and staircases demand sturdy footwear.

Others: A compact umbrella or light rain shell for sudden showers, high-SPF sunscreen and sunglasses, a reusable water bottle, and a small daypack.

2 Days Chongqing Tour with Ciqikou Old Town and Three Gorges Museum

Tour Route：Chongqing-Chongqing Garden Expo Park

Tour Type：Classic China Tours / City Tours / Family Tours

2 Days

1 Places

View Detail

Advice for Your Chongqing Trip in September

September offers a more comfortable window to experience Chongqing’s vibrant mountain-city charm. Ride the Yangtze River cable car, explore Hongya Cave at night, wander Ciqikou Ancient Town, or take a cruise through the Three Gorges.

Tips:

• Dress lightly with some layers to adjust to temperature changes and strong air conditioning indoors.
• Carry an umbrella as showers can appear suddenly in the afternoon.
• Stay hydrated and take breaks during midday warmth.
• Enjoy local hotpot and spicy street food — perfect for the season.

Recommended Attractions: Hongya Cave, Ciqikou Ancient Town, Yangtze River Cableway, Three Gorges Museum, People's Square, and day trips to Dazu Rock Carvings or Wulong Karst.

September delivers warm, gradually cooling weather and a lively yet more bearable atmosphere in Chongqing. Pack light layers and rain gear, embrace the city’s energy, and prepare for an enjoyable trip. Safe travels!