Jiachuan climate — normals and trends
Jiachuan (China) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 14.2 °C and it receives 1,681 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 (24.0 °C on average) and the coldest is January (3.2 °C). Rainfall peaks in July.
Jiachuan averages 37 frost days, 16 hot days (≥ 30 °C) and 175 rainy days per year.
Jiachuan has warmed by +1.3 °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 48 to 26 per year over the period.
The hottest day of the period reached 37.9 °C (on 21 August 2022) and the coldest -15.7 °C (on 11 January 1955).
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
JiachuanSichuan
- coords
- 32.21°, 106.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.2°C
Average daily high
17.8°C
Average daily low
10.7°C
Annual rainfall
1,681mm
Sunshine / day
6.8h
Mean relative humidity
79%
Average peak wind
9.4km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
37 d/yr
Hot days (≥ 30 °C)
16 d/yr
Rainy days (≥ 1 mm)
175 d/yr
Annual snowfall
17.5 cm
Average feels-like high
18.1 °C
Average feels-like low
10.1 °C
Average peak gust
27.5 km/h
Tropical nights (≥ 20 °C)
49 d/yr
Solar radiation
12.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.46 · 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
37.9 °C
21 August 2022
Coldest day
-15.7 °C
11 January 1955
Wettest day
258 mm
13 August 2020
Windiest day
44.1 km/h
23 May 1946
Strongest gust
113.4 km/h
12 April 1979
Hottest feels-like
41.8 °C
15 July 2006
Coldest feels-like
-20.6 °C
5 January 1955
Snowiest day
10.6 cm
13 January 1957
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 | 8.6 °C | +1.8 °C | 43 mm | +10 mm |
| Feb | 8.9 °C | -0.1 °C | 37 mm | -2 mm |
| Mar | 14.0 °C | +0.1 °C | 40 mm | -24 mm |
| Apr | 23.9 °C | +5.0 °C | 22 mm | -71 mm |
| May | 27.9 °C | +5.1 °C | 58 mm | -81 mm |
| Jun | 29.6 °C | +3.9 °C | 97 mm | -81 mm |
| Jul | 30.9 °C | +3.2 °C | 214 mm | -141 mm |
| Aug | 30.1 °C | +2.6 °C | 223 mm | -56 mm |
| Sep | 23.9 °C | +1.0 °C | 649 mm | +386 mm |
| Oct | 18.5 °C | +0.5 °C | 402 mm | +274 mm |
| Nov | 13.7 °C | +0.8 °C | 37 mm | -35 mm |
| Dec | 10.0 °C | +2.0 °C | 34 mm | -2 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 Jiachuan?
Jiachuan has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 1,681 mm of precipitation per year.
What is the hottest day ever recorded in Jiachuan?
The hottest day measured in Jiachuan between 1940 and 2025 was 21 August 2022, reaching 37.9 °C.
What is the coldest day in Jiachuan?
The coldest day measured in Jiachuan between 1940 and 2025 was 11 January 1955, at -15.7 °C.
Does it snow in Jiachuan?
Yes. Jiachuan gets on average 17.5 cm of snow per year and has around 37 frost days.
Has the climate of Jiachuan warmed?
Yes: Jiachuan warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jiachuan?
The wettest day measured in Jiachuan between 1940 and 2025 was 13 August 2020, with 258 mm of rain in 24 hours.
What was the windiest day in Jiachuan?
The windiest day measured in Jiachuan between 1940 and 2025 was 23 May 1946, with winds reaching 44.1 km/h.
What is the warmest month in Jiachuan?
The warmest month in Jiachuan is July (24.0 °C on average); the coldest is January (3.2 °C).
How much does it rain in Jiachuan?
Jiachuan receives on average 1,681 mm of precipitation per year, spread over about 175 rainy days.
Is it sunny in Jiachuan?
Jiachuan gets on average 6.8 hours of sunshine per day, roughly 2,482 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jiachuan?
The heaviest 24-hour snowfall measured in Jiachuan between 1940 and 2025 was 13 January 1957, with 10.6 cm.
Are there tropical nights in Jiachuan?
Yes: Jiachuan has on average 49 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jiachuan?
In Jiachuan, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 15 July 2006, and the lowest was -20.6 °C on 5 January 1955.
Compare Jiachuan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jiachuan