Jianshan climate — normals and trends
Jianshan (China) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.7 °C and it receives 2,000 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 (21.8 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in July.
Jianshan averages 67 frost days, 2 hot days (≥ 30 °C) and 205 rainy days per year.
Jianshan has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The number of frost days there went from about 73 to 61 per year over the period.
The hottest day of the period reached 32.9 °C (on 24 August 1959) and the coldest -19.1 °C (on 28 December 1991).
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
JianshanChongqing Municipality
- coords
- 31.43°, 108.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.7°C
Average daily high
15.3°C
Average daily low
8.5°C
Annual rainfall
2,000mm
Sunshine / day
7.1h
Mean relative humidity
82%
Average peak wind
6.8km/h
Seasonal range
21.5°C
Frost days (< 0 °C)
67 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
205 d/yr
Annual snowfall
71.8 cm
Average feels-like high
15.2 °C
Average feels-like low
7.6 °C
Average peak gust
27.6 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
12.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.25 · 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
32.9 °C
24 August 1959
Coldest day
-19.1 °C
28 December 1991
Wettest day
153 mm
30 June 1991
Windiest day
20.8 km/h
12 April 1979
Strongest gust
91.1 km/h
18 March 1966
Hottest feels-like
37.9 °C
23 July 1961
Coldest feels-like
-23.9 °C
28 December 1991
Snowiest day
18.1 cm
13 January 1957
Sunniest day
13.8 h
30 June 2009
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 | 5.7 °C | +2.2 °C | 59 mm | +10 mm |
| Feb | 5.6 °C | 0.0 °C | 29 mm | -36 mm |
| Mar | 11.0 °C | +0.2 °C | 130 mm | +12 mm |
| Apr | 18.8 °C | +2.7 °C | 88 mm | -62 mm |
| May | 22.1 °C | +2.2 °C | 138 mm | -70 mm |
| Jun | 23.6 °C | +0.6 °C | 206 mm | -42 mm |
| Jul | 28.6 °C | +3.1 °C | 199 mm | -147 mm |
| Aug | 27.4 °C | +1.9 °C | 322 mm | +61 mm |
| Sep | 22.8 °C | +1.6 °C | 354 mm | +110 mm |
| Oct | 17.4 °C | +1.5 °C | 299 mm | +142 mm |
| Nov | 11.5 °C | +0.9 °C | 64 mm | -34 mm |
| Dec | 8.1 °C | +2.7 °C | 60 mm | +4 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 Jianshan?
Jianshan has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.7 °C and it receives 2,000 mm of precipitation per year.
What is the hottest day ever recorded in Jianshan?
The hottest day measured in Jianshan between 1940 and 2025 was 24 August 1959, reaching 32.9 °C.
What is the coldest day in Jianshan?
The coldest day measured in Jianshan between 1940 and 2025 was 28 December 1991, at -19.1 °C.
Does it snow in Jianshan?
Yes. Jianshan gets on average 71.8 cm of snow per year and has around 67 frost days.
Has the climate of Jianshan warmed?
Yes: Jianshan warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jianshan?
The wettest day measured in Jianshan between 1940 and 2025 was 30 June 1991, with 153 mm of rain in 24 hours.
What was the windiest day in Jianshan?
The windiest day measured in Jianshan between 1940 and 2025 was 12 April 1979, with winds reaching 20.8 km/h.
What is the warmest month in Jianshan?
The warmest month in Jianshan is July (21.8 °C on average); the coldest is January (0.3 °C).
How much does it rain in Jianshan?
Jianshan receives on average 2,000 mm of precipitation per year, spread over about 205 rainy days.
Is it sunny in Jianshan?
Jianshan gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jianshan?
The heaviest 24-hour snowfall measured in Jianshan between 1940 and 2025 was 13 January 1957, with 18.1 cm.
Are there tropical nights in Jianshan?
Yes: Jianshan has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jianshan?
In Jianshan, between 1940 and 2025, the highest apparent temperature reached 37.9 °C on 23 July 1961, and the lowest was -23.9 °C on 28 December 1991.
Compare Jianshan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jianshan