Zhen’an climate — normals and trends
Zhen’an (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.7 °C and it receives 1,673 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 August (26.8 °C on average) and the coldest is January (5.8 °C). Rainfall peaks in July.
Zhen’an averages 10 frost days, 51 hot days (≥ 30 °C) and 167 rainy days per year.
Zhen’an has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The number of frost days there went from about 16 to 4 per year over the period.
The hottest day of the period reached 39.7 °C (on 24 August 1959) and the coldest -13.7 °C (on 20 December 1965).
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
Zhen’anChongqing Municipality
- coords
- 31.15°, 108.32°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.7°C
Average daily high
20.1°C
Average daily low
13.5°C
Annual rainfall
1,673mm
Sunshine / day
6.7h
Mean relative humidity
77%
Average peak wind
7.3km/h
Seasonal range
21.0°C
Frost days (< 0 °C)
10 d/yr
Hot days (≥ 30 °C)
51 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
6.8 cm
Average feels-like high
21.1 °C
Average feels-like low
13.8 °C
Average peak gust
22.7 km/h
Tropical nights (≥ 20 °C)
98 d/yr
Solar radiation
12.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.29 · 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
39.7 °C
24 August 1959
Coldest day
-13.7 °C
20 December 1965
Wettest day
168 mm
30 June 1991
Windiest day
28.0 km/h
28 May 1946
Strongest gust
73.4 km/h
23 June 1946
Hottest feels-like
45.9 °C
23 August 1957
Coldest feels-like
-17.5 °C
20 December 1965
Snowiest day
11.4 cm
13 January 1957
Sunniest day
13.8 h
28 June 2013
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 | 10.7 °C | +1.9 °C | 57 mm | +8 mm |
| Feb | 10.7 °C | -0.1 °C | 31 mm | -28 mm |
| Mar | 16.1 °C | +0.4 °C | 114 mm | +5 mm |
| Apr | 23.9 °C | +3.0 °C | 80 mm | -61 mm |
| May | 27.5 °C | +3.0 °C | 80 mm | -109 mm |
| Jun | 28.7 °C | +1.1 °C | 190 mm | +0 mm |
| Jul | 34.7 °C | +4.4 °C | 71 mm | -172 mm |
| Aug | 33.6 °C | +2.8 °C | 136 mm | -39 mm |
| Sep | 27.8 °C | +1.7 °C | 268 mm | +61 mm |
| Oct | 22.0 °C | +1.6 °C | 284 mm | +130 mm |
| Nov | 16.0 °C | +0.8 °C | 71 mm | -29 mm |
| Dec | 12.5 °C | +2.3 °C | 55 mm | -3 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 Zhen’an?
Zhen’an has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.7 °C and it receives 1,673 mm of precipitation per year.
What is the hottest day ever recorded in Zhen’an?
The hottest day measured in Zhen’an between 1940 and 2025 was 24 August 1959, reaching 39.7 °C.
What is the coldest day in Zhen’an?
The coldest day measured in Zhen’an between 1940 and 2025 was 20 December 1965, at -13.7 °C.
Does it snow in Zhen’an?
Yes. Zhen’an gets on average 6.8 cm of snow per year and has around 10 frost days.
Has the climate of Zhen’an warmed?
Yes: Zhen’an warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zhen’an?
The wettest day measured in Zhen’an between 1940 and 2025 was 30 June 1991, with 168 mm of rain in 24 hours.
What was the windiest day in Zhen’an?
The windiest day measured in Zhen’an between 1940 and 2025 was 28 May 1946, with winds reaching 28.0 km/h.
What is the warmest month in Zhen’an?
The warmest month in Zhen’an is August (26.8 °C on average); the coldest is January (5.8 °C).
How much does it rain in Zhen’an?
Zhen’an receives on average 1,673 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Zhen’an?
Zhen’an gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zhen’an?
The heaviest 24-hour snowfall measured in Zhen’an between 1940 and 2025 was 13 January 1957, with 11.4 cm.
Are there tropical nights in Zhen’an?
Yes: Zhen’an has on average 98 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zhen’an?
In Zhen’an, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 23 August 1957, and the lowest was -17.5 °C on 20 December 1965.
Compare Zhen’an with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zhen’an