Chengdu, China — Weather in September 2026

Climate Overview

Chengdu, China in September has warm conditions, with highs averaging 26.3°C (79°F). Rain falls on about 13 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 28°C (83°F) at the start to 25°C (77°F) by month's end.

Rainfall is heaviest during the middle of the month, while the last third tends to be drier.

Expect around 7.5h of sunshine at the start of September, decreasing to 6.2h by the end.

The warmest days tend to fall around the 1th, averaging 28.4°C (83°F).

Compared to August, this month is about 5°C cooler with 7 fewer rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

26°C / 20°C

Feels Like

29°C / 23°C

Rain

13 days · 147 mm

Sunshine

6.2h / day

Humidity

79% — Humid

Wind

10 km/h

Wind Direction

NNW (345°)

Gusts

22 km/h

Daylight

12.3 h

Cloud Cover

78%

Clear Sky Days

0.3

UV Index

5.8 — High

Dew Point

19°C — Humid

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:48

Daylight 12.4h

Sunset 19:10

What to Expect

Daytime temperatures around 26°C (79°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

2days (5 mm) Excellent

3days (10 mm) Excellent

3days (11 mm) Excellent

1days (5 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	11°C / 3°C	8°C / 1°C	2days (5 mm) Excellent	5.9h Fair	75% Muggy	3.6 Moderate	Fair	View Details
February	13°C / 5°C	11°C / 2°C	3days (10 mm) Excellent	6.3h Fair	73% Muggy	4.2 Moderate	Fair	View Details
March	19°C / 10°C	17°C / 8°C	7days (27 mm) Good	6.7h Fair	70% Muggy	5.5 High	Good	View Details
April best	24°C / 14°C	24°C / 14°C	10days (64 mm) Wet	7.7h Good	68% Muggy	6.8 High	Excellent	View Details
May best	27°C / 18°C	28°C / 19°C	12days (77 mm) Wet	8h Good	66% Muggy	6.6 High	Excellent	View Details
June	30°C / 22°C	33°C / 24°C	10days (103 mm) Wet	8.2h Good	69% Muggy	6.6 High	Good	View Details
July	31°C / 23°C	36°C / 28°C	20days (289 mm) Wet	8.8h Good	80% Humid	7.1 Very High	Wet	View Details
August	31°C / 24°C	36°C / 28°C	20days (289 mm) Wet	9h Good	77% Humid	7.2 Very High	Wet	View Details
September best	26°C / 20°C	29°C / 23°C	13days (147 mm) Wet	6.2h Fair	79% Humid	5.8 High	Excellent	View Details
October best	20°C / 15°C	21°C / 15°C	10days (51 mm) Wet	4.1h Fair	79% Humid	3.5 Moderate	Excellent	View Details
November best	16°C / 10°C	15°C / 9°C	3days (11 mm) Excellent	5.3h Fair	76% Humid	3.3 Moderate	Excellent	View Details
December	11°C / 5°C	9°C / 2°C	1days (5 mm) Excellent	5.6h Fair	74% Muggy	3.4 Moderate	Fair	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Chengdu?

September is typically excellent for visiting Chengdu, with average highs of 26°C (79°F) and around 13 rainy days. Chengdu, China in September has warm conditions, with highs averaging 26.3°C (79°F). Rain falls on about 13 days this mo

Does it rain a lot in Chengdu in September?

Chengdu typically sees around 13 rainy days in September with 147 mm (5.8 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Chengdu in September?

Nights stay pleasantly warm in Chengdu during September, around 20°C (68°F). Light evening wear is sufficient.

What should I pack for Chengdu in September?

With highs of 26°C (79°F) and lows of 20°C (68°F) in September, we recommend: Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Chengdu?

Yes, September offers some of the best weather conditions in Chengdu with comfortable temperatures and lower chances of rain.

What is the UV index in Chengdu in September?

The average UV index in Chengdu during September is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Chengdu in September?

Chengdu gets approximately 12 hours of daylight per day in September, with around 6 hours of sunshine.

Does it snow in Chengdu in September?

Snow is uncommon in Chengdu during September based on 10-year climate averages.

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