Wanmu climate — normals and trends
Wanmu (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.0 °C and it receives 1,678 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 (25.3 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in June.
Wanmu averages 22 frost days, 33 hot days (≥ 30 °C) and 202 rainy days per year.
Wanmu has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 33 to 11 per year over the period.
The hottest day of the period reached 37.9 °C (on 20 August 2022) and the coldest -15.9 °C (on 12 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
WanmuChongqing Municipality
- coords
- 28.63°, 108.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.0°C
Average daily high
18.3°C
Average daily low
12.1°C
Annual rainfall
1,678mm
Sunshine / day
5.3h
Mean relative humidity
81%
Average peak wind
8.7km/h
Seasonal range
21.7°C
Frost days (< 0 °C)
22 d/yr
Hot days (≥ 30 °C)
33 d/yr
Rainy days (≥ 1 mm)
202 d/yr
Annual snowfall
42.0 cm
Average feels-like high
18.7 °C
Average feels-like low
12.1 °C
Average peak gust
25.6 km/h
Tropical nights (≥ 20 °C)
81 d/yr
Solar radiation
10.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.46 · 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
20 August 2022
Coldest day
-15.9 °C
12 January 1955
Wettest day
143 mm
29 July 1982
Windiest day
34.2 km/h
26 May 1946
Strongest gust
94.7 km/h
25 April 1983
Hottest feels-like
42.4 °C
1 August 2021
Coldest feels-like
-19.8 °C
12 January 1955
Snowiest day
13.9 cm
4 January 1970
Sunniest day
13.7 h
2 July 1973
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 | 9.6 °C | +3.4 °C | 63 mm | -9 mm |
| Feb | 7.8 °C | 0.0 °C | 89 mm | +4 mm |
| Mar | 14.6 °C | +1.6 °C | 94 mm | -43 mm |
| Apr | 22.5 °C | +3.6 °C | 122 mm | -52 mm |
| May | 24.6 °C | +1.7 °C | 228 mm | +12 mm |
| Jun | 26.7 °C | +0.6 °C | 281 mm | +58 mm |
| Jul | 31.7 °C | +2.6 °C | 140 mm | -52 mm |
| Aug | 31.3 °C | +2.2 °C | 139 mm | -14 mm |
| Sep | 26.8 °C | +1.8 °C | 157 mm | +28 mm |
| Oct | 20.9 °C | +1.9 °C | 168 mm | +29 mm |
| Nov | 15.2 °C | +1.4 °C | 88 mm | -6 mm |
| Dec | 11.3 °C | +2.9 °C | 67 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 Wanmu?
Wanmu has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,678 mm of precipitation per year.
What is the hottest day ever recorded in Wanmu?
The hottest day measured in Wanmu between 1940 and 2025 was 20 August 2022, reaching 37.9 °C.
What is the coldest day in Wanmu?
The coldest day measured in Wanmu between 1940 and 2025 was 12 January 1955, at -15.9 °C.
Does it snow in Wanmu?
Yes. Wanmu gets on average 42.0 cm of snow per year and has around 22 frost days.
Has the climate of Wanmu warmed?
Yes: Wanmu warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wanmu?
The wettest day measured in Wanmu between 1940 and 2025 was 29 July 1982, with 143 mm of rain in 24 hours.
What was the windiest day in Wanmu?
The windiest day measured in Wanmu between 1940 and 2025 was 26 May 1946, with winds reaching 34.2 km/h.
What is the warmest month in Wanmu?
The warmest month in Wanmu is July (25.3 °C on average); the coldest is January (3.6 °C).
How much does it rain in Wanmu?
Wanmu receives on average 1,678 mm of precipitation per year, spread over about 202 rainy days.
Is it sunny in Wanmu?
Wanmu gets on average 5.3 hours of sunshine per day, roughly 1,935 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wanmu?
The heaviest 24-hour snowfall measured in Wanmu between 1940 and 2025 was 4 January 1970, with 13.9 cm.
Are there tropical nights in Wanmu?
Yes: Wanmu has on average 81 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wanmu?
In Wanmu, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 1 August 2021, and the lowest was -19.8 °C on 12 January 1955.
Compare Wanmu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wanmu