Chenghai climate — normals and trends
Chenghai (China) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 15.0 °C and it receives 1,074 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 (19.9 °C on average) and the coldest is January (8.3 °C). Rainfall peaks in July.
Chenghai averages 3 frost days, 4 hot days (≥ 30 °C) and 136 rainy days per year.
Chenghai has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.2 °C (on 31 May 2023) and the coldest -9.2 °C (on 1 January 1984).
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
ChenghaiYunnan
- coords
- 26.46°, 100.68°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.0°C
Average daily high
20.2°C
Average daily low
10.5°C
Annual rainfall
1,074mm
Sunshine / day
9.4h
Mean relative humidity
66%
Average peak wind
9.5km/h
Seasonal range
11.6°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
3.3 cm
Average feels-like high
19.2 °C
Average feels-like low
9.7 °C
Average peak gust
36.8 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
16.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.71 · 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
35.2 °C
31 May 2023
Coldest day
-9.2 °C
1 January 1984
Wettest day
93 mm
6 September 2015
Windiest day
25.0 km/h
20 February 1989
Strongest gust
100.8 km/h
20 February 1989
Hottest feels-like
33.6 °C
18 August 2016
Coldest feels-like
-13.3 °C
1 January 1984
Snowiest day
18.6 cm
28 December 1983
Sunniest day
13.2 h
6 June 2025
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 | 15.3 °C | +0.9 °C | 14 mm | +5 mm |
| Feb | 17.4 °C | +0.7 °C | 4 mm | -6 mm |
| Mar | 19.7 °C | -0.5 °C | 26 mm | +13 mm |
| Apr | 25.2 °C | +1.9 °C | 26 mm | +6 mm |
| May | 24.3 °C | -0.7 °C | 117 mm | +51 mm |
| Jun | 24.8 °C | +0.7 °C | 201 mm | +30 mm |
| Jul | 25.5 °C | +2.1 °C | 274 mm | +23 mm |
| Aug | 24.0 °C | +0.9 °C | 380 mm | +138 mm |
| Sep | 23.3 °C | +1.6 °C | 209 mm | +33 mm |
| Oct | 21.4 °C | +1.9 °C | 97 mm | +14 mm |
| Nov | 16.5 °C | -0.2 °C | 37 mm | +13 mm |
| Dec | 15.9 °C | +1.5 °C | 4 mm | -6 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 Chenghai?
Chenghai has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,074 mm of precipitation per year.
What is the hottest day ever recorded in Chenghai?
The hottest day measured in Chenghai between 1940 and 2025 was 31 May 2023, reaching 35.2 °C.
What is the coldest day in Chenghai?
The coldest day measured in Chenghai between 1940 and 2025 was 1 January 1984, at -9.2 °C.
Does it snow in Chenghai?
Yes. Chenghai gets on average 3.3 cm of snow per year and has around 3 frost days.
Has the climate of Chenghai warmed?
Yes: Chenghai warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chenghai?
The wettest day measured in Chenghai between 1940 and 2025 was 6 September 2015, with 93 mm of rain in 24 hours.
What was the windiest day in Chenghai?
The windiest day measured in Chenghai between 1940 and 2025 was 20 February 1989, with winds reaching 25.0 km/h.
What is the warmest month in Chenghai?
The warmest month in Chenghai is June (19.9 °C on average); the coldest is January (8.3 °C).
How much does it rain in Chenghai?
Chenghai receives on average 1,074 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Chenghai?
Chenghai 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 Chenghai?
The heaviest 24-hour snowfall measured in Chenghai between 1940 and 2025 was 28 December 1983, with 18.6 cm.
Are there tropical nights in Chenghai?
Yes: Chenghai has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chenghai?
In Chenghai, between 1940 and 2025, the highest apparent temperature reached 33.6 °C on 18 August 2016, and the lowest was -13.3 °C on 1 January 1984.
Compare Chenghai with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chenghai