Yancheng climate — normals and trends
Yancheng (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.9 °C and it receives 1,170 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 (27.3 °C on average) and the coldest is January (1.8 °C). Rainfall peaks in July.
Yancheng averages 62 frost days, 54 hot days (≥ 30 °C) and 108 rainy days per year.
Yancheng has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 74 to 50 per year over the period.
The hottest day of the period reached 40.7 °C (on 5 August 1946) and the coldest -15.6 °C (on 13 February 1957).
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
YanchengJiangsu
- coords
- 33.36°, 120.16°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.9°C
Average daily high
19.4°C
Average daily low
10.9°C
Annual rainfall
1,170mm
Sunshine / day
8.2h
Mean relative humidity
74%
Average peak wind
16.1km/h
Seasonal range
25.5°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
54 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
8.9 cm
Average feels-like high
19.2 °C
Average feels-like low
10.0 °C
Average peak gust
33.1 km/h
Tropical nights (≥ 20 °C)
87 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
40.7 °C
5 August 1946
Coldest day
-15.6 °C
13 February 1957
Wettest day
176 mm
15 July 1951
Windiest day
52.4 km/h
2 August 1956
Strongest gust
106.9 km/h
2 August 1956
Hottest feels-like
47.3 °C
1 August 2003
Coldest feels-like
-20.9 °C
13 February 1957
Snowiest day
16.0 cm
4 March 1952
Sunniest day
14.0 h
1 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 | 9.5 °C | +3.3 °C | 3 mm | -28 mm |
| Feb | 9.3 °C | +1.3 °C | 7 mm | -34 mm |
| Mar | 16.4 °C | +3.5 °C | 40 mm | -22 mm |
| Apr | 24.5 °C | +5.3 °C | 11 mm | -65 mm |
| May | 26.4 °C | +1.9 °C | 95 mm | -9 mm |
| Jun | 29.7 °C | +1.6 °C | 251 mm | +76 mm |
| Jul | 33.5 °C | +2.6 °C | 187 mm | -77 mm |
| Aug | 32.9 °C | +2.3 °C | 325 mm | +167 mm |
| Sep | 28.4 °C | +2.0 °C | 335 mm | +206 mm |
| Oct | 23.0 °C | +1.5 °C | 61 mm | +8 mm |
| Nov | 17.4 °C | +1.9 °C | 10 mm | -38 mm |
| Dec | 11.6 °C | +2.7 °C | 5 mm | -24 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 Yancheng?
Yancheng has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.9 °C and it receives 1,170 mm of precipitation per year.
What is the hottest day ever recorded in Yancheng?
The hottest day measured in Yancheng between 1940 and 2025 was 5 August 1946, reaching 40.7 °C.
What is the coldest day in Yancheng?
The coldest day measured in Yancheng between 1940 and 2025 was 13 February 1957, at -15.6 °C.
Does it snow in Yancheng?
Yes. Yancheng gets on average 8.9 cm of snow per year and has around 62 frost days.
Has the climate of Yancheng warmed?
Yes: Yancheng warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yancheng?
The wettest day measured in Yancheng between 1940 and 2025 was 15 July 1951, with 176 mm of rain in 24 hours.
What was the windiest day in Yancheng?
The windiest day measured in Yancheng between 1940 and 2025 was 2 August 1956, with winds reaching 52.4 km/h.
What is the warmest month in Yancheng?
The warmest month in Yancheng is July (27.3 °C on average); the coldest is January (1.8 °C).
How much does it rain in Yancheng?
Yancheng receives on average 1,170 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Yancheng?
Yancheng gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Yancheng?
The heaviest 24-hour snowfall measured in Yancheng between 1940 and 2025 was 4 March 1952, with 16.0 cm.
Are there tropical nights in Yancheng?
Yes: Yancheng has on average 87 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Yancheng?
In Yancheng, between 1940 and 2025, the highest apparent temperature reached 47.3 °C on 1 August 2003, and the lowest was -20.9 °C on 13 February 1957.
Compare Yancheng with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yancheng