Jiangyin climate — normals and trends
Jiangyin (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 1,296 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 (28.1 °C on average) and the coldest is January (2.9 °C). Rainfall peaks in June.
Jiangyin averages 45 frost days, 62 hot days (≥ 30 °C) and 119 rainy days per year.
Jiangyin has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 56 to 34 per year over the period.
The hottest day of the period reached 40.8 °C (on 5 August 1946) and the coldest -15.7 °C (on 17 January 1945).
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
JiangyinJiangsu
- coords
- 31.91°, 120.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.8°C
Average daily high
20.0°C
Average daily low
12.2°C
Annual rainfall
1,296mm
Sunshine / day
7.8h
Mean relative humidity
77%
Average peak wind
15.7km/h
Seasonal range
25.2°C
Frost days (< 0 °C)
45 d/yr
Hot days (≥ 30 °C)
62 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
10.6 cm
Average feels-like high
20.2 °C
Average feels-like low
11.6 °C
Average peak gust
31.8 km/h
Tropical nights (≥ 20 °C)
99 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
40.8 °C
5 August 1946
Coldest day
-15.7 °C
17 January 1945
Wettest day
206 mm
4 August 1960
Windiest day
47.9 km/h
22 August 1951
Strongest gust
106.9 km/h
2 August 1956
Hottest feels-like
48.1 °C
1 August 2003
Coldest feels-like
-21.1 °C
17 January 1945
Snowiest day
22.2 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 | 10.5 °C | +3.5 °C | 7 mm | -35 mm |
| Feb | 9.9 °C | +1.1 °C | 11 mm | -44 mm |
| Mar | 17.1 °C | +3.6 °C | 45 mm | -38 mm |
| Apr | 25.4 °C | +5.7 °C | 35 mm | -67 mm |
| May | 26.9 °C | +2.2 °C | 128 mm | -4 mm |
| Jun | 28.9 °C | +0.8 °C | 281 mm | +42 mm |
| Jul | 33.4 °C | +1.8 °C | 214 mm | -15 mm |
| Aug | 33.8 °C | +2.5 °C | 210 mm | +59 mm |
| Sep | 29.9 °C | +2.9 °C | 205 mm | +81 mm |
| Oct | 23.9 °C | +1.9 °C | 51 mm | -6 mm |
| Nov | 17.6 °C | +1.5 °C | 11 mm | -38 mm |
| Dec | 12.7 °C | +3.0 °C | 6 mm | -27 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 Jiangyin?
Jiangyin has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 1,296 mm of precipitation per year.
What is the hottest day ever recorded in Jiangyin?
The hottest day measured in Jiangyin between 1940 and 2025 was 5 August 1946, reaching 40.8 °C.
What is the coldest day in Jiangyin?
The coldest day measured in Jiangyin between 1940 and 2025 was 17 January 1945, at -15.7 °C.
Does it snow in Jiangyin?
Yes. Jiangyin gets on average 10.6 cm of snow per year and has around 45 frost days.
Has the climate of Jiangyin warmed?
Yes: Jiangyin warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jiangyin?
The wettest day measured in Jiangyin between 1940 and 2025 was 4 August 1960, with 206 mm of rain in 24 hours.
What was the windiest day in Jiangyin?
The windiest day measured in Jiangyin between 1940 and 2025 was 22 August 1951, with winds reaching 47.9 km/h.
What is the warmest month in Jiangyin?
The warmest month in Jiangyin is July (28.1 °C on average); the coldest is January (2.9 °C).
How much does it rain in Jiangyin?
Jiangyin receives on average 1,296 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Jiangyin?
Jiangyin 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 Jiangyin?
The heaviest 24-hour snowfall measured in Jiangyin between 1940 and 2025 was 18 January 1984, with 22.2 cm.
Are there tropical nights in Jiangyin?
Yes: Jiangyin has on average 99 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jiangyin?
In Jiangyin, between 1940 and 2025, the highest apparent temperature reached 48.1 °C on 1 August 2003, and the lowest was -21.1 °C on 17 January 1945.
Compare Jiangyin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jiangyin