Dianshui climate — normals and trends
Dianshui (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.8 °C and it receives 1,887 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 (24.8 °C on average) and the coldest is January (3.7 °C). Rainfall peaks in May.
Dianshui averages 22 frost days, 27 hot days (≥ 30 °C) and 215 rainy days per year.
Dianshui has warmed by +1.4 °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 32 to 12 per year over the period.
The hottest day of the period reached 37.9 °C (on 15 August 2006) and the coldest -16.0 °C (on 30 January 1977).
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
DianshuiChongqing Municipality
- coords
- 29.28°, 108.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.8°C
Average daily high
18.0°C
Average daily low
11.9°C
Annual rainfall
1,887mm
Sunshine / day
5.4h
Mean relative humidity
81%
Average peak wind
7.0km/h
Seasonal range
21.1°C
Frost days (< 0 °C)
22 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
215 d/yr
Annual snowfall
40.0 cm
Average feels-like high
18.7 °C
Average feels-like low
12.0 °C
Average peak gust
25.3 km/h
Tropical nights (≥ 20 °C)
73 d/yr
Solar radiation
10.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.45 · 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
15 August 2006
Coldest day
-16.0 °C
30 January 1977
Wettest day
132 mm
19 July 1993
Windiest day
31.5 km/h
26 May 1946
Strongest gust
94.3 km/h
12 June 1946
Hottest feels-like
42.1 °C
5 August 2025
Coldest feels-like
-20.1 °C
30 January 1977
Snowiest day
14.3 cm
1 April 1972
Sunniest day
13.8 h
18 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 | 9.3 °C | +3.0 °C | 76 mm | +1 mm |
| Feb | 7.8 °C | -0.2 °C | 76 mm | -13 mm |
| Mar | 14.2 °C | +1.0 °C | 131 mm | -17 mm |
| Apr | 22.1 °C | +3.4 °C | 129 mm | -61 mm |
| May | 24.4 °C | +1.8 °C | 198 mm | -42 mm |
| Jun | 26.4 °C | +0.9 °C | 323 mm | +84 mm |
| Jul | 31.5 °C | +2.9 °C | 103 mm | -101 mm |
| Aug | 31.6 °C | +2.9 °C | 115 mm | -48 mm |
| Sep | 26.3 °C | +1.9 °C | 244 mm | +74 mm |
| Oct | 20.5 °C | +2.0 °C | 246 mm | +71 mm |
| Nov | 14.7 °C | +1.2 °C | 99 mm | -22 mm |
| Dec | 10.9 °C | +2.6 °C | 77 mm | -0 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 Dianshui?
Dianshui has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.8 °C and it receives 1,887 mm of precipitation per year.
What is the hottest day ever recorded in Dianshui?
The hottest day measured in Dianshui between 1940 and 2025 was 15 August 2006, reaching 37.9 °C.
What is the coldest day in Dianshui?
The coldest day measured in Dianshui between 1940 and 2025 was 30 January 1977, at -16.0 °C.
Does it snow in Dianshui?
Yes. Dianshui gets on average 40.0 cm of snow per year and has around 22 frost days.
Has the climate of Dianshui warmed?
Yes: Dianshui warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dianshui?
The wettest day measured in Dianshui between 1940 and 2025 was 19 July 1993, with 132 mm of rain in 24 hours.
What was the windiest day in Dianshui?
The windiest day measured in Dianshui between 1940 and 2025 was 26 May 1946, with winds reaching 31.5 km/h.
What is the warmest month in Dianshui?
The warmest month in Dianshui is July (24.8 °C on average); the coldest is January (3.7 °C).
How much does it rain in Dianshui?
Dianshui receives on average 1,887 mm of precipitation per year, spread over about 215 rainy days.
Is it sunny in Dianshui?
Dianshui gets on average 5.4 hours of sunshine per day, roughly 1,971 hours per year over 1940-2025.
What is the biggest single-day snowfall in Dianshui?
The heaviest 24-hour snowfall measured in Dianshui between 1940 and 2025 was 1 April 1972, with 14.3 cm.
Are there tropical nights in Dianshui?
Yes: Dianshui has on average 73 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Dianshui?
In Dianshui, between 1940 and 2025, the highest apparent temperature reached 42.1 °C on 5 August 2025, and the lowest was -20.1 °C on 30 January 1977.
Compare Dianshui with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dianshui