Chengdu climate — normals and trends
Chengdu (China) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 16.9 °C and it receives 1,154 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (26.0 °C on average) and the coldest is January (6.0 °C). Rainfall peaks in July.
Chengdu averages 7 frost days, 50 hot days (≥ 30 °C) and 112 rainy days per year.
Chengdu has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 14 to 0 per year over the period.
The hottest day of the period reached 41.2 °C (on 21 August 2022) and the coldest -6.1 °C (on 20 December 1944).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ChengduSichuan
- coords
- 30.67°, 104.07°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.9°C
Average daily high
20.6°C
Average daily low
13.6°C
Annual rainfall
1,154mm
Sunshine / day
7.0h
Mean relative humidity
75%
Average peak wind
10.8km/h
Seasonal range
20.0°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
50 d/yr
Rainy days (≥ 1 mm)
112 d/yr
Annual snowfall
0.7 cm
Average feels-like high
21.0 °C
Average feels-like low
13.7 °C
Average peak gust
22.3 km/h
Tropical nights (≥ 20 °C)
97 d/yr
Solar radiation
11.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.41 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.2 °C
21 August 2022
Coldest day
-6.1 °C
20 December 1944
Wettest day
458 mm
29 August 1946
Windiest day
60.9 km/h
13 May 1946
Strongest gust
84.6 km/h
31 July 1946
Hottest feels-like
45.5 °C
15 August 2022
Coldest feels-like
-10.6 °C
18 November 1979
Snowiest day
5.3 cm
13 January 1957
Sunniest day
13.9 h
16 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 11.0 °C | +1.5 °C | 13 mm | +8 mm |
| Feb | 10.4 °C | -1.3 °C | 24 mm | +16 mm |
| Mar | 15.7 °C | -1.3 °C | 38 mm | +18 mm |
| Apr | 25.3 °C | +2.7 °C | 34 mm | -13 mm |
| May | 28.7 °C | +2.1 °C | 58 mm | -13 mm |
| Jun | 30.8 °C | +2.2 °C | 270 mm | +126 mm |
| Jul | 32.3 °C | +2.5 °C | 296 mm | -19 mm |
| Aug | 31.6 °C | +2.1 °C | 287 mm | -28 mm |
| Sep | 27.1 °C | +1.8 °C | 272 mm | +109 mm |
| Oct | 21.3 °C | +0.8 °C | 63 mm | +20 mm |
| Nov | 15.9 °C | +0.2 °C | 8 mm | -12 mm |
| Dec | 12.6 °C | +1.9 °C | 2 mm | -4 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Chengdu?
Chengdu has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 16.9 °C and it receives 1,154 mm of precipitation per year.
What is the hottest day ever recorded in Chengdu?
The hottest day measured in Chengdu between 1940 and 2025 was 21 August 2022, reaching 41.2 °C.
What is the coldest day in Chengdu?
The coldest day measured in Chengdu between 1940 and 2025 was 20 December 1944, at -6.1 °C.
Does it snow in Chengdu?
Almost never: Chengdu sees virtually no snow, with about 7 frost days per year.
Has the climate of Chengdu warmed?
Yes: Chengdu warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chengdu?
The wettest day measured in Chengdu between 1940 and 2025 was 29 August 1946, with 458 mm of rain in 24 hours.
What was the windiest day in Chengdu?
The windiest day measured in Chengdu between 1940 and 2025 was 13 May 1946, with winds reaching 60.9 km/h.
What is the warmest month in Chengdu?
The warmest month in Chengdu is July (26.0 °C on average); the coldest is January (6.0 °C).
How much does it rain in Chengdu?
Chengdu receives on average 1,154 mm of precipitation per year, spread over about 112 rainy days.
Is it sunny in Chengdu?
Chengdu gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chengdu?
The heaviest 24-hour snowfall measured in Chengdu between 1940 and 2025 was 13 January 1957, with 5.3 cm.
Are there tropical nights in Chengdu?
Yes: Chengdu has on average 97 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chengdu?
In Chengdu, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 15 August 2022, and the lowest was -10.6 °C on 18 November 1979.
Compare Chengdu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chengdu