Chengqiao climate — normals and trends
Chengqiao (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 1,269 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 (27.9 °C on average) and the coldest is January (4.2 °C). Rainfall peaks in June.
Chengqiao averages 17 frost days, 42 hot days (≥ 30 °C) and 121 rainy days per year.
Chengqiao has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 25 to 9 per year over the period.
The hottest day of the period reached 37.8 °C (on 3 September 1946) and the coldest -9.3 °C (on 16 January 1958).
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
ChengqiaoShanghai Municipality
- coords
- 31.63°, 121.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
18.9°C
Average daily low
13.9°C
Annual rainfall
1,269mm
Sunshine / day
7.8h
Mean relative humidity
78%
Average peak wind
18.8km/h
Seasonal range
23.7°C
Frost days (< 0 °C)
17 d/yr
Hot days (≥ 30 °C)
42 d/yr
Rainy days (≥ 1 mm)
121 d/yr
Annual snowfall
4.9 cm
Average feels-like high
19.0 °C
Average feels-like low
13.1 °C
Average peak gust
34.1 km/h
Tropical nights (≥ 20 °C)
114 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
37.8 °C
3 September 1946
Coldest day
-9.3 °C
16 January 1958
Wettest day
224 mm
17 September 1983
Windiest day
72.1 km/h
21 August 1951
Strongest gust
123.8 km/h
21 August 1951
Hottest feels-like
46.9 °C
24 July 2017
Coldest feels-like
-17.3 °C
24 January 2016
Snowiest day
15.2 cm
18 January 1984
Sunniest day
14.0 h
19 June 1940
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 | 9.4 °C | +2.6 °C | 14 mm | -30 mm |
| Feb | 8.0 °C | +0.1 °C | 17 mm | -40 mm |
| Mar | 14.8 °C | +2.8 °C | 73 mm | -13 mm |
| Apr | 21.5 °C | +3.8 °C | 45 mm | -61 mm |
| May | 24.2 °C | +1.6 °C | 156 mm | +29 mm |
| Jun | 27.8 °C | +1.7 °C | 255 mm | +20 mm |
| Jul | 31.7 °C | +1.2 °C | 228 mm | +35 mm |
| Aug | 33.2 °C | +3.0 °C | 133 mm | -10 mm |
| Sep | 30.3 °C | +4.0 °C | 151 mm | +18 mm |
| Oct | 24.2 °C | +2.9 °C | 56 mm | -2 mm |
| Nov | 17.0 °C | +1.2 °C | 5 mm | -47 mm |
| Dec | 12.2 °C | +2.6 °C | 4 mm | -33 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 Chengqiao?
Chengqiao has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 1,269 mm of precipitation per year.
What is the hottest day ever recorded in Chengqiao?
The hottest day measured in Chengqiao between 1940 and 2025 was 3 September 1946, reaching 37.8 °C.
What is the coldest day in Chengqiao?
The coldest day measured in Chengqiao between 1940 and 2025 was 16 January 1958, at -9.3 °C.
Does it snow in Chengqiao?
Yes. Chengqiao gets on average 4.9 cm of snow per year and has around 17 frost days.
Has the climate of Chengqiao warmed?
Yes: Chengqiao warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chengqiao?
The wettest day measured in Chengqiao between 1940 and 2025 was 17 September 1983, with 224 mm of rain in 24 hours.
What was the windiest day in Chengqiao?
The windiest day measured in Chengqiao between 1940 and 2025 was 21 August 1951, with winds reaching 72.1 km/h.
What is the warmest month in Chengqiao?
The warmest month in Chengqiao is July (27.9 °C on average); the coldest is January (4.2 °C).
How much does it rain in Chengqiao?
Chengqiao receives on average 1,269 mm of precipitation per year, spread over about 121 rainy days.
Is it sunny in Chengqiao?
Chengqiao gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chengqiao?
The heaviest 24-hour snowfall measured in Chengqiao between 1940 and 2025 was 18 January 1984, with 15.2 cm.
Are there tropical nights in Chengqiao?
Yes: Chengqiao has on average 114 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chengqiao?
In Chengqiao, between 1940 and 2025, the highest apparent temperature reached 46.9 °C on 24 July 2017, and the lowest was -17.3 °C on 24 January 2016.
Compare Chengqiao with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chengqiao