Caidian climate — normals and trends
Caidian (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.3 °C and it receives 1,627 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 (29.1 °C on average) and the coldest is January (4.3 °C). Rainfall peaks in June.
Caidian averages 23 frost days, 82 hot days (≥ 30 °C) and 133 rainy days per year.
Caidian has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 30 to 16 per year over the period.
The hottest day of the period reached 41.0 °C (on 10 August 1953) and the coldest -20.7 °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
CaidianHubei
- coords
- 30.58°, 114.03°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.3°C
Average daily high
21.1°C
Average daily low
14.0°C
Annual rainfall
1,627mm
Sunshine / day
7.5h
Mean relative humidity
76%
Average peak wind
14.8km/h
Seasonal range
24.8°C
Frost days (< 0 °C)
23 d/yr
Hot days (≥ 30 °C)
82 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
12.8 cm
Average feels-like high
21.8 °C
Average feels-like low
13.8 °C
Average peak gust
29.0 km/h
Tropical nights (≥ 20 °C)
122 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.19 · 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
41.0 °C
10 August 1953
Coldest day
-20.7 °C
11 January 1955
Wettest day
203 mm
3 September 2005
Windiest day
49.6 km/h
12 April 1979
Strongest gust
87.8 km/h
12 April 1979
Hottest feels-like
48.4 °C
10 July 1988
Coldest feels-like
-25.7 °C
11 January 1955
Snowiest day
15.4 cm
18 January 1984
Sunniest day
13.3 h
10 June 1942
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 | 12.6 °C | +4.6 °C | 43 mm | -7 mm |
| Feb | 10.8 °C | +0.7 °C | 20 mm | -56 mm |
| Mar | 17.7 °C | +2.5 °C | 58 mm | -74 mm |
| Apr | 26.6 °C | +5.1 °C | 91 mm | -89 mm |
| May | 28.5 °C | +2.4 °C | 199 mm | -26 mm |
| Jun | 29.3 °C | -0.3 °C | 449 mm | +160 mm |
| Jul | 35.3 °C | +2.9 °C | 44 mm | -189 mm |
| Aug | 34.7 °C | +2.3 °C | 138 mm | -15 mm |
| Sep | 28.1 °C | -0.2 °C | 175 mm | +67 mm |
| Oct | 22.7 °C | +0.1 °C | 84 mm | +3 mm |
| Nov | 18.9 °C | +2.4 °C | 36 mm | -26 mm |
| Dec | 14.0 °C | +3.6 °C | 33 mm | -5 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 Caidian?
Caidian has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.3 °C and it receives 1,627 mm of precipitation per year.
What is the hottest day ever recorded in Caidian?
The hottest day measured in Caidian between 1940 and 2025 was 10 August 1953, reaching 41.0 °C.
What is the coldest day in Caidian?
The coldest day measured in Caidian between 1940 and 2025 was 11 January 1955, at -20.7 °C.
Does it snow in Caidian?
Yes. Caidian gets on average 12.8 cm of snow per year and has around 23 frost days.
Has the climate of Caidian warmed?
Yes: Caidian warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Caidian?
The wettest day measured in Caidian between 1940 and 2025 was 3 September 2005, with 203 mm of rain in 24 hours.
What was the windiest day in Caidian?
The windiest day measured in Caidian between 1940 and 2025 was 12 April 1979, with winds reaching 49.6 km/h.
What is the warmest month in Caidian?
The warmest month in Caidian is July (29.1 °C on average); the coldest is January (4.3 °C).
How much does it rain in Caidian?
Caidian receives on average 1,627 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Caidian?
Caidian gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Caidian?
The heaviest 24-hour snowfall measured in Caidian between 1940 and 2025 was 18 January 1984, with 15.4 cm.
Are there tropical nights in Caidian?
Yes: Caidian has on average 122 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Caidian?
In Caidian, between 1940 and 2025, the highest apparent temperature reached 48.4 °C on 10 July 1988, and the lowest was -25.7 °C on 11 January 1955.
Compare Caidian with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Caidian