Nanzhou climate — normals and trends
Nanzhou (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.8 °C and it receives 1,627 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 (29.4 °C on average) and the coldest is January (5.2 °C). Rainfall peaks in June.
Nanzhou averages 13 frost days, 85 hot days (≥ 30 °C) and 148 rainy days per year.
Nanzhou has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 21 to 5 per year over the period.
The hottest day of the period reached 42.2 °C (on 13 August 1953) and the coldest -21.1 °C (on 11 January 1955).
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
NanzhouHunan
- coords
- 29.36°, 112.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.8°C
Average daily high
21.3°C
Average daily low
14.6°C
Annual rainfall
1,627mm
Sunshine / day
7.0h
Mean relative humidity
77%
Average peak wind
14.8km/h
Seasonal range
24.2°C
Frost days (< 0 °C)
13 d/yr
Hot days (≥ 30 °C)
85 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
13.8 cm
Average feels-like high
22.3 °C
Average feels-like low
14.6 °C
Average peak gust
29.7 km/h
Tropical nights (≥ 20 °C)
127 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.20 · 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
42.2 °C
13 August 1953
Coldest day
-21.1 °C
11 January 1955
Wettest day
327 mm
24 June 1998
Windiest day
47.7 km/h
14 June 1946
Strongest gust
92.9 km/h
12 April 2025
Hottest feels-like
48.2 °C
10 July 1988
Coldest feels-like
-25.6 °C
11 January 1955
Snowiest day
15.5 cm
22 January 1998
Sunniest day
13.1 h
18 June 1944
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 | +5.1 °C | 39 mm | -20 mm |
| Feb | 10.8 °C | +0.5 °C | 38 mm | -46 mm |
| Mar | 17.8 °C | +2.5 °C | 70 mm | -79 mm |
| Apr | 27.2 °C | +5.6 °C | 119 mm | -82 mm |
| May | 28.6 °C | +2.4 °C | 157 mm | -81 mm |
| Jun | 30.4 °C | +0.7 °C | 311 mm | +35 mm |
| Jul | 35.2 °C | +2.4 °C | 87 mm | -110 mm |
| Aug | 35.2 °C | +2.7 °C | 83 mm | -58 mm |
| Sep | 28.5 °C | +0.1 °C | 149 mm | +59 mm |
| Oct | 23.1 °C | +0.3 °C | 52 mm | -32 mm |
| Nov | 19.1 °C | +2.2 °C | 55 mm | -13 mm |
| Dec | 14.8 °C | +3.8 °C | 34 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 Nanzhou?
Nanzhou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.8 °C and it receives 1,627 mm of precipitation per year.
What is the hottest day ever recorded in Nanzhou?
The hottest day measured in Nanzhou between 1940 and 2025 was 13 August 1953, reaching 42.2 °C.
What is the coldest day in Nanzhou?
The coldest day measured in Nanzhou between 1940 and 2025 was 11 January 1955, at -21.1 °C.
Does it snow in Nanzhou?
Yes. Nanzhou gets on average 13.8 cm of snow per year and has around 13 frost days.
Has the climate of Nanzhou warmed?
Yes: Nanzhou warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nanzhou?
The wettest day measured in Nanzhou between 1940 and 2025 was 24 June 1998, with 327 mm of rain in 24 hours.
What was the windiest day in Nanzhou?
The windiest day measured in Nanzhou between 1940 and 2025 was 14 June 1946, with winds reaching 47.7 km/h.
What is the warmest month in Nanzhou?
The warmest month in Nanzhou is July (29.4 °C on average); the coldest is January (5.2 °C).
How much does it rain in Nanzhou?
Nanzhou receives on average 1,627 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Nanzhou?
Nanzhou gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nanzhou?
The heaviest 24-hour snowfall measured in Nanzhou between 1940 and 2025 was 22 January 1998, with 15.5 cm.
Are there tropical nights in Nanzhou?
Yes: Nanzhou has on average 127 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Nanzhou?
In Nanzhou, between 1940 and 2025, the highest apparent temperature reached 48.2 °C on 10 July 1988, and the lowest was -25.6 °C on 11 January 1955.
Compare Nanzhou with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nanzhou