Changba climate — normals and trends
Changba (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.5 °C and it receives 1,760 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 (24.4 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in June.
Changba averages 23 frost days, 24 hot days (≥ 30 °C) and 199 rainy days per year.
Changba has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The number of frost days there went from about 32 to 14 per year over the period.
The hottest day of the period reached 37.2 °C (on 15 August 2006) and the coldest -13.5 °C (on 16 December 1975).
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
ChangbaChongqing Municipality
- coords
- 29.33°, 107.47°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.5°C
Average daily high
17.7°C
Average daily low
11.5°C
Annual rainfall
1,760mm
Sunshine / day
5.7h
Mean relative humidity
83%
Average peak wind
8.2km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
23 d/yr
Hot days (≥ 30 °C)
24 d/yr
Rainy days (≥ 1 mm)
199 d/yr
Annual snowfall
26.8 cm
Average feels-like high
18.2 °C
Average feels-like low
11.3 °C
Average peak gust
31.0 km/h
Tropical nights (≥ 20 °C)
60 d/yr
Solar radiation
11.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.38 · 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
37.2 °C
15 August 2006
Coldest day
-13.5 °C
16 December 1975
Wettest day
131 mm
28 August 1941
Windiest day
32.3 km/h
28 May 1946
Strongest gust
111.2 km/h
28 June 1946
Hottest feels-like
42.0 °C
5 August 1994
Coldest feels-like
-17.8 °C
12 January 1955
Snowiest day
17.6 cm
22 February 1989
Sunniest day
13.8 h
29 June 2008
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 | +2.4 °C | 68 mm | +13 mm |
| Feb | 7.7 °C | -0.4 °C | 48 mm | -16 mm |
| Mar | 13.8 °C | +0.6 °C | 116 mm | -8 mm |
| Apr | 21.3 °C | +2.8 °C | 134 mm | -46 mm |
| May | 23.8 °C | +1.7 °C | 207 mm | -30 mm |
| Jun | 25.9 °C | +1.0 °C | 369 mm | +131 mm |
| Jul | 30.7 °C | +2.5 °C | 126 mm | -83 mm |
| Aug | 31.1 °C | +2.7 °C | 90 mm | -75 mm |
| Sep | 26.4 °C | +2.4 °C | 166 mm | +2 mm |
| Oct | 20.4 °C | +2.3 °C | 198 mm | +41 mm |
| Nov | 13.9 °C | +0.7 °C | 106 mm | 0 mm |
| Dec | 10.4 °C | +2.4 °C | 69 mm | +8 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 Changba?
Changba has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.5 °C and it receives 1,760 mm of precipitation per year.
What is the hottest day ever recorded in Changba?
The hottest day measured in Changba between 1940 and 2025 was 15 August 2006, reaching 37.2 °C.
What is the coldest day in Changba?
The coldest day measured in Changba between 1940 and 2025 was 16 December 1975, at -13.5 °C.
Does it snow in Changba?
Yes. Changba gets on average 26.8 cm of snow per year and has around 23 frost days.
Has the climate of Changba warmed?
Yes: Changba warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Changba?
The wettest day measured in Changba between 1940 and 2025 was 28 August 1941, with 131 mm of rain in 24 hours.
What was the windiest day in Changba?
The windiest day measured in Changba between 1940 and 2025 was 28 May 1946, with winds reaching 32.3 km/h.
What is the warmest month in Changba?
The warmest month in Changba is July (24.4 °C on average); the coldest is January (3.6 °C).
How much does it rain in Changba?
Changba receives on average 1,760 mm of precipitation per year, spread over about 199 rainy days.
Is it sunny in Changba?
Changba gets on average 5.7 hours of sunshine per day, roughly 2,081 hours per year over 1940-2025.
What is the biggest single-day snowfall in Changba?
The heaviest 24-hour snowfall measured in Changba between 1940 and 2025 was 22 February 1989, with 17.6 cm.
Are there tropical nights in Changba?
Yes: Changba has on average 60 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Changba?
In Changba, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 5 August 1994, and the lowest was -17.8 °C on 12 January 1955.
Compare Changba with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Changba