Mengzi climate — normals and trends
Mengzi (China) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 16.3 °C and it receives 1,573 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 June (20.8 °C on average) and the coldest is January (9.7 °C). Rainfall peaks in August.
Mengzi averages 1 frost days, 1 hot days (≥ 30 °C) and 207 rainy days per year.
Mengzi has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.0 °C (on 31 May 1963) and the coldest -10.0 °C (on 19 December 2013).
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
MengziYunnan
- coords
- 23.37°, 103.38°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.3°C
Average daily high
20.7°C
Average daily low
13.0°C
Annual rainfall
1,573mm
Sunshine / day
8.1h
Mean relative humidity
84%
Average peak wind
10.2km/h
Seasonal range
11.1°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
207 d/yr
Annual snowfall
1.3 cm
Average feels-like high
21.4 °C
Average feels-like low
13.2 °C
Average peak gust
33.4 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.72 · 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
32.0 °C
31 May 1963
Coldest day
-10.0 °C
19 December 2013
Wettest day
143 mm
10 September 2019
Windiest day
24.5 km/h
16 March 1996
Strongest gust
82.4 km/h
17 September 2014
Hottest feels-like
35.2 °C
27 July 2024
Coldest feels-like
-13.8 °C
18 December 2013
Snowiest day
21.5 cm
28 December 1983
Sunniest day
13.4 h
14 June 1970
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 | 14.1 °C | -0.3 °C | 23 mm | -9 mm |
| Feb | 15.8 °C | -0.5 °C | 32 mm | -5 mm |
| Mar | 19.6 °C | -0.3 °C | 24 mm | -43 mm |
| Apr | 22.4 °C | -0.3 °C | 68 mm | -34 mm |
| May | 24.5 °C | +0.3 °C | 167 mm | -8 mm |
| Jun | 24.4 °C | 0.0 °C | 397 mm | +138 mm |
| Jul | 26.0 °C | +1.7 °C | 350 mm | +69 mm |
| Aug | 24.9 °C | +0.5 °C | 258 mm | -41 mm |
| Sep | 24.5 °C | +1.0 °C | 227 mm | +71 mm |
| Oct | 22.3 °C | +1.4 °C | 109 mm | +18 mm |
| Nov | 17.9 °C | -0.1 °C | 83 mm | +36 mm |
| Dec | 16.7 °C | +1.7 °C | 14 mm | -14 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 Mengzi?
Mengzi has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 16.3 °C and it receives 1,573 mm of precipitation per year.
What is the hottest day ever recorded in Mengzi?
The hottest day measured in Mengzi between 1940 and 2025 was 31 May 1963, reaching 32.0 °C.
What is the coldest day in Mengzi?
The coldest day measured in Mengzi between 1940 and 2025 was 19 December 2013, at -10.0 °C.
Does it snow in Mengzi?
Yes. Mengzi gets on average 1.3 cm of snow per year and has around 1 frost days.
Has the climate of Mengzi warmed?
Yes: Mengzi warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mengzi?
The wettest day measured in Mengzi between 1940 and 2025 was 10 September 2019, with 143 mm of rain in 24 hours.
What was the windiest day in Mengzi?
The windiest day measured in Mengzi between 1940 and 2025 was 16 March 1996, with winds reaching 24.5 km/h.
What is the warmest month in Mengzi?
The warmest month in Mengzi is June (20.8 °C on average); the coldest is January (9.7 °C).
How much does it rain in Mengzi?
Mengzi receives on average 1,573 mm of precipitation per year, spread over about 207 rainy days.
Is it sunny in Mengzi?
Mengzi gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mengzi?
The heaviest 24-hour snowfall measured in Mengzi between 1940 and 2025 was 28 December 1983, with 21.5 cm.
Are there tropical nights in Mengzi?
Yes: Mengzi has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mengzi?
In Mengzi, between 1940 and 2025, the highest apparent temperature reached 35.2 °C on 27 July 2024, and the lowest was -13.8 °C on 18 December 2013.
Compare Mengzi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mengzi