Yunnanyi climate — normals and trends
Yunnanyi (China) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 16.0 °C and it receives 855 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 (21.0 °C on average) and the coldest is January (9.2 °C). Rainfall peaks in July.
Yunnanyi averages 3 frost days, 7 hot days (≥ 30 °C) and 120 rainy days per year.
Yunnanyi has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.3 °C (on 2 June 1958) and the coldest -7.4 °C (on 12 December 1979).
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
YunnanyiYunnan
- coords
- 25.42°, 100.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.0°C
Average daily high
21.7°C
Average daily low
11.1°C
Annual rainfall
855mm
Sunshine / day
9.4h
Mean relative humidity
65%
Average peak wind
14.9km/h
Seasonal range
11.8°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
1.3 cm
Average feels-like high
20.2 °C
Average feels-like low
10.1 °C
Average peak gust
39.1 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
17.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.76 · 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
35.3 °C
2 June 1958
Coldest day
-7.4 °C
12 December 1979
Wettest day
98 mm
2 August 2014
Windiest day
34.3 km/h
21 February 2016
Strongest gust
88.9 km/h
17 January 1984
Hottest feels-like
33.8 °C
16 June 2013
Coldest feels-like
-11.1 °C
12 December 1979
Snowiest day
22.4 cm
28 December 1983
Sunniest day
13.1 h
15 June 2013
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 | 17.1 °C | +1.0 °C | 16 mm | +4 mm |
| Feb | 20.0 °C | +1.8 °C | 4 mm | -8 mm |
| Mar | 21.9 °C | +0.4 °C | 13 mm | -1 mm |
| Apr | 25.9 °C | +1.5 °C | 20 mm | -1 mm |
| May | 25.4 °C | -0.5 °C | 119 mm | +57 mm |
| Jun | 25.8 °C | +0.4 °C | 222 mm | +75 mm |
| Jul | 26.4 °C | +1.9 °C | 265 mm | +83 mm |
| Aug | 25.1 °C | +0.7 °C | 181 mm | -1 mm |
| Sep | 24.9 °C | +1.4 °C | 158 mm | +37 mm |
| Oct | 22.7 °C | +1.3 °C | 108 mm | +37 mm |
| Nov | 18.3 °C | -0.4 °C | 53 mm | +29 mm |
| Dec | 17.9 °C | +1.7 °C | 1 mm | -9 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 Yunnanyi?
Yunnanyi has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 16.0 °C and it receives 855 mm of precipitation per year.
What is the hottest day ever recorded in Yunnanyi?
The hottest day measured in Yunnanyi between 1940 and 2025 was 2 June 1958, reaching 35.3 °C.
What is the coldest day in Yunnanyi?
The coldest day measured in Yunnanyi between 1940 and 2025 was 12 December 1979, at -7.4 °C.
Does it snow in Yunnanyi?
Yes. Yunnanyi gets on average 1.3 cm of snow per year and has around 3 frost days.
Has the climate of Yunnanyi warmed?
Yes: Yunnanyi warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yunnanyi?
The wettest day measured in Yunnanyi between 1940 and 2025 was 2 August 2014, with 98 mm of rain in 24 hours.
What was the windiest day in Yunnanyi?
The windiest day measured in Yunnanyi between 1940 and 2025 was 21 February 2016, with winds reaching 34.3 km/h.
What is the warmest month in Yunnanyi?
The warmest month in Yunnanyi is June (21.0 °C on average); the coldest is January (9.2 °C).
How much does it rain in Yunnanyi?
Yunnanyi receives on average 855 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Yunnanyi?
Yunnanyi gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Yunnanyi?
The heaviest 24-hour snowfall measured in Yunnanyi between 1940 and 2025 was 28 December 1983, with 22.4 cm.
Are there tropical nights in Yunnanyi?
Yes: Yunnanyi has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Yunnanyi?
In Yunnanyi, between 1940 and 2025, the highest apparent temperature reached 33.8 °C on 16 June 2013, and the lowest was -11.1 °C on 12 December 1979.
Compare Yunnanyi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yunnanyi