Zhongshan climate — normals and trends
Zhongshan (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 1,618 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 July (25.9 °C on average) and the coldest is January (5.7 °C). Rainfall peaks in July.
Zhongshan averages 6 frost days, 43 hot days (≥ 30 °C) and 197 rainy days per year.
Zhongshan has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The number of frost days there went from about 10 to 2 per year over the period.
The hottest day of the period reached 39.2 °C (on 20 August 2022) and the coldest -11.7 °C (on 21 December 1944).
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
ZhongshanChongqing Municipality
- coords
- 28.86°, 106.34°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
19.3°C
Average daily low
13.4°C
Annual rainfall
1,618mm
Sunshine / day
5.8h
Mean relative humidity
82%
Average peak wind
9.3km/h
Seasonal range
20.2°C
Frost days (< 0 °C)
6 d/yr
Hot days (≥ 30 °C)
43 d/yr
Rainy days (≥ 1 mm)
197 d/yr
Annual snowfall
9.6 cm
Average feels-like high
20.3 °C
Average feels-like low
13.6 °C
Average peak gust
27.4 km/h
Tropical nights (≥ 20 °C)
86 d/yr
Solar radiation
11.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.26 · 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
39.2 °C
20 August 2022
Coldest day
-11.7 °C
21 December 1944
Wettest day
166 mm
25 August 1968
Windiest day
46.5 km/h
29 May 1946
Strongest gust
114.5 km/h
28 May 1946
Hottest feels-like
43.7 °C
16 July 2002
Coldest feels-like
-15.7 °C
21 December 1944
Snowiest day
10.2 cm
11 January 1999
Sunniest day
13.8 h
13 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 | 10.4 °C | +2.3 °C | 64 mm | +19 mm |
| Feb | 9.8 °C | -0.6 °C | 48 mm | +5 mm |
| Mar | 14.7 °C | -0.8 °C | 77 mm | -0 mm |
| Apr | 22.8 °C | +2.4 °C | 95 mm | -38 mm |
| May | 25.2 °C | +1.5 °C | 196 mm | -3 mm |
| Jun | 27.6 °C | +1.5 °C | 225 mm | +0 mm |
| Jul | 31.4 °C | +1.8 °C | 370 mm | +127 mm |
| Aug | 31.6 °C | +2.1 °C | 220 mm | -11 mm |
| Sep | 27.3 °C | +2.1 °C | 172 mm | +3 mm |
| Oct | 22.1 °C | +2.8 °C | 179 mm | +52 mm |
| Nov | 14.5 °C | -0.2 °C | 78 mm | -2 mm |
| Dec | 11.4 °C | +1.9 °C | 48 mm | -3 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 Zhongshan?
Zhongshan has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 1,618 mm of precipitation per year.
What is the hottest day ever recorded in Zhongshan?
The hottest day measured in Zhongshan between 1940 and 2025 was 20 August 2022, reaching 39.2 °C.
What is the coldest day in Zhongshan?
The coldest day measured in Zhongshan between 1940 and 2025 was 21 December 1944, at -11.7 °C.
Does it snow in Zhongshan?
Yes. Zhongshan gets on average 9.6 cm of snow per year and has around 6 frost days.
Has the climate of Zhongshan warmed?
Yes: Zhongshan warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zhongshan?
The wettest day measured in Zhongshan between 1940 and 2025 was 25 August 1968, with 166 mm of rain in 24 hours.
What was the windiest day in Zhongshan?
The windiest day measured in Zhongshan between 1940 and 2025 was 29 May 1946, with winds reaching 46.5 km/h.
What is the warmest month in Zhongshan?
The warmest month in Zhongshan is July (25.9 °C on average); the coldest is January (5.7 °C).
How much does it rain in Zhongshan?
Zhongshan receives on average 1,618 mm of precipitation per year, spread over about 197 rainy days.
Is it sunny in Zhongshan?
Zhongshan gets on average 5.8 hours of sunshine per day, roughly 2,117 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zhongshan?
The heaviest 24-hour snowfall measured in Zhongshan between 1940 and 2025 was 11 January 1999, with 10.2 cm.
Are there tropical nights in Zhongshan?
Yes: Zhongshan has on average 86 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zhongshan?
In Zhongshan, between 1940 and 2025, the highest apparent temperature reached 43.7 °C on 16 July 2002, and the lowest was -15.7 °C on 21 December 1944.
Compare Zhongshan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zhongshan