Yousuo climate — normals and trends
Yousuo (China) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 13.1 °C and it receives 1,295 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 (18.5 °C on average) and the coldest is January (5.9 °C). Rainfall peaks in August.
Yousuo averages 22 frost days, 0 hot days (≥ 30 °C) and 163 rainy days per year.
Yousuo has warmed by +2.3 °C between 1940 and 2025, or +0.27 °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 31.9 °C (on 1 June 2023) and the coldest -15.2 °C (on 17 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
YousuoYunnan
- coords
- 26.03°, 100.07°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.1°C
Average daily high
18.5°C
Average daily low
8.7°C
Annual rainfall
1,295mm
Sunshine / day
9.4h
Mean relative humidity
72%
Average peak wind
9.2km/h
Seasonal range
12.6°C
Frost days (< 0 °C)
22 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
163 d/yr
Annual snowfall
7.3 cm
Average feels-like high
17.6 °C
Average feels-like low
7.6 °C
Average peak gust
41.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
16.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.69 · 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
31.9 °C
1 June 2023
Coldest day
-15.2 °C
17 December 2013
Wettest day
98 mm
12 August 2025
Windiest day
22.5 km/h
27 February 1976
Strongest gust
102.6 km/h
20 March 1988
Hottest feels-like
32.1 °C
1 August 2024
Coldest feels-like
-19.7 °C
17 December 2013
Snowiest day
24.2 cm
28 December 1983
Sunniest day
13.1 h
30 May 1958
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 | 13.6 °C | +1.0 °C | 25 mm | +7 mm |
| Feb | 14.7 °C | +0.3 °C | 17 mm | -6 mm |
| Mar | 17.0 °C | -0.5 °C | 40 mm | +11 mm |
| Apr | 21.9 °C | +1.5 °C | 37 mm | +1 mm |
| May | 21.4 °C | -1.1 °C | 194 mm | +98 mm |
| Jun | 23.2 °C | +0.7 °C | 254 mm | +45 mm |
| Jul | 23.8 °C | +1.9 °C | 307 mm | +53 mm |
| Aug | 22.5 °C | +0.6 °C | 440 mm | +179 mm |
| Sep | 22.6 °C | +1.7 °C | 261 mm | +54 mm |
| Oct | 20.7 °C | +1.8 °C | 105 mm | -11 mm |
| Nov | 16.5 °C | +0.7 °C | 48 mm | +16 mm |
| Dec | 15.1 °C | +1.9 °C | 0 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 Yousuo?
Yousuo has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 13.1 °C and it receives 1,295 mm of precipitation per year.
What is the hottest day ever recorded in Yousuo?
The hottest day measured in Yousuo between 1940 and 2025 was 1 June 2023, reaching 31.9 °C.
What is the coldest day in Yousuo?
The coldest day measured in Yousuo between 1940 and 2025 was 17 December 2013, at -15.2 °C.
Does it snow in Yousuo?
Yes. Yousuo gets on average 7.3 cm of snow per year and has around 22 frost days.
Has the climate of Yousuo warmed?
Yes: Yousuo warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yousuo?
The wettest day measured in Yousuo between 1940 and 2025 was 12 August 2025, with 98 mm of rain in 24 hours.
What was the windiest day in Yousuo?
The windiest day measured in Yousuo between 1940 and 2025 was 27 February 1976, with winds reaching 22.5 km/h.
What is the warmest month in Yousuo?
The warmest month in Yousuo is June (18.5 °C on average); the coldest is January (5.9 °C).
How much does it rain in Yousuo?
Yousuo receives on average 1,295 mm of precipitation per year, spread over about 163 rainy days.
Is it sunny in Yousuo?
Yousuo 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 Yousuo?
The heaviest 24-hour snowfall measured in Yousuo between 1940 and 2025 was 28 December 1983, with 24.2 cm.
Are there tropical nights in Yousuo?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Yousuo.
What was the most extreme apparent temperature in Yousuo?
In Yousuo, between 1940 and 2025, the highest apparent temperature reached 32.1 °C on 1 August 2024, and the lowest was -19.7 °C on 17 December 2013.
Compare Yousuo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yousuo