Sanchuan climate — normals and trends
Sanchuan (China) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 13.2 °C and it receives 1,247 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 (18.2 °C on average) and the coldest is January (6.4 °C). Rainfall peaks in July.
Sanchuan averages 15 frost days, 1 hot days (≥ 30 °C) and 157 rainy days per year.
Sanchuan has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 19 to 11 per year over the period.
The hottest day of the period reached 33.2 °C (on 31 May 2023) and the coldest -16.1 °C (on 27 December 1982).
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
SanchuanYunnan
- coords
- 26.75°, 100.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.2°C
Average daily high
18.2°C
Average daily low
9.0°C
Annual rainfall
1,247mm
Sunshine / day
9.3h
Mean relative humidity
68%
Average peak wind
10.7km/h
Seasonal range
11.8°C
Frost days (< 0 °C)
15 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
157 d/yr
Annual snowfall
9.5 cm
Average feels-like high
16.8 °C
Average feels-like low
7.8 °C
Average peak gust
39.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
16.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °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
33.2 °C
31 May 2023
Coldest day
-16.1 °C
27 December 1982
Wettest day
87 mm
6 July 2016
Windiest day
25.1 km/h
23 April 2012
Strongest gust
97.2 km/h
20 March 1988
Hottest feels-like
31.2 °C
18 August 2016
Coldest feels-like
-20.8 °C
27 December 1982
Snowiest day
20.4 cm
28 December 1983
Sunniest day
13.3 h
2 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 | 13.1 °C | +0.9 °C | 19 mm | +6 mm |
| Feb | 14.9 °C | +0.6 °C | 10 mm | -5 mm |
| Mar | 17.0 °C | -0.8 °C | 35 mm | +18 mm |
| Apr | 22.8 °C | +1.9 °C | 25 mm | +0 mm |
| May | 22.3 °C | -0.5 °C | 135 mm | +57 mm |
| Jun | 22.9 °C | +0.7 °C | 241 mm | +41 mm |
| Jul | 23.7 °C | +2.0 °C | 357 mm | +65 mm |
| Aug | 22.3 °C | +0.8 °C | 417 mm | +144 mm |
| Sep | 21.9 °C | +1.9 °C | 199 mm | +2 mm |
| Oct | 19.8 °C | +2.0 °C | 95 mm | -4 mm |
| Nov | 14.8 °C | 0.0 °C | 54 mm | +27 mm |
| Dec | 14.0 °C | +1.7 °C | 5 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 Sanchuan?
Sanchuan has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 1,247 mm of precipitation per year.
What is the hottest day ever recorded in Sanchuan?
The hottest day measured in Sanchuan between 1940 and 2025 was 31 May 2023, reaching 33.2 °C.
What is the coldest day in Sanchuan?
The coldest day measured in Sanchuan between 1940 and 2025 was 27 December 1982, at -16.1 °C.
Does it snow in Sanchuan?
Yes. Sanchuan gets on average 9.5 cm of snow per year and has around 15 frost days.
Has the climate of Sanchuan warmed?
Yes: Sanchuan warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sanchuan?
The wettest day measured in Sanchuan between 1940 and 2025 was 6 July 2016, with 87 mm of rain in 24 hours.
What was the windiest day in Sanchuan?
The windiest day measured in Sanchuan between 1940 and 2025 was 23 April 2012, with winds reaching 25.1 km/h.
What is the warmest month in Sanchuan?
The warmest month in Sanchuan is June (18.2 °C on average); the coldest is January (6.4 °C).
How much does it rain in Sanchuan?
Sanchuan receives on average 1,247 mm of precipitation per year, spread over about 157 rainy days.
Is it sunny in Sanchuan?
Sanchuan gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sanchuan?
The heaviest 24-hour snowfall measured in Sanchuan between 1940 and 2025 was 28 December 1983, with 20.4 cm.
Are there tropical nights in Sanchuan?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sanchuan.
What was the most extreme apparent temperature in Sanchuan?
In Sanchuan, between 1940 and 2025, the highest apparent temperature reached 31.2 °C on 18 August 2016, and the lowest was -20.8 °C on 27 December 1982.
Compare Sanchuan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sanchuan